01820nas a2200241   4500008004100000022001400041245007300055210006900128260009000197300000900287490000600296520096100302100002601263700002601289700002301315700002001338700002301358700002201381700002301403700002101426700002401447856010701471       2013                        eng d  a2045-232200aSuperior field emission properties of layered WS2-RGO nanocomposites0 aSuperior field emission properties of layered WS2RGO nanocomposi  aMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLANDbNATURE PUBLISHING GROUPcNOV  a32820 v33 a<p>We report here the field emission studies of a layered WS2-RGO composite at the base pressure of similar to 1 x 10(-8) mbar. The turn on field required to draw a field emission current density of 1 mu A/cm(2) is found to be 3.5, 2.3 and 2 V/mu m for WS2, RGO and the WS2-RGO composite respectively. The enhanced field emission behavior observed for the WS2-RGO nanocomposite is attributed to a high field enhancement factor of 2978, which is associated with the surface protrusions of the single-to-few layer thick sheets of the nanocomposite. The highest current density of similar to 800 mu A/cm(2) is drawn at an applied field of 4.1 V/mu m from a few layers of the WS2-RGO nanocomposite. Furthermore, first-principles density functional calculations suggest that the enhanced field emission may also be due to an overalp of the electronic structures of WS2 and RGO, where graphene-like states are dumped in the region of the WS2 fundamental gap.</p>1 aRout, Chandra, Sekhar1 aJoshi, Padmashree, D.1 aKashid, Ranjit, V.1 aJoag, Dilip, S.1 aMore, Mahendra, A.1 aSimbeck, Adam, J.1 aWashington, Morris1 aNayak, Saroj, K.1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/superior-field-emission-properties-layered-ws2-rgo-nanocomposites-002123nas a2200241   4500008004100000022001400041245008600055210006900141260012500210300001100335490000800346520120400354100002601558700002601584700002301610700002001633700002301653700002201676700002301698700002101721700002401742856011501766       2014                        eng d  a0003-695100aEnhanced field emission properties of doped graphene nanosheets with layered SnS20 aEnhanced field emission properties of doped graphene nanosheets   aCIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScJUL  a0431090 v1053 a<p>We report here our experimental investigations on p-doped graphene using tin sulfide (SnS2), which shows enhanced field emission properties. The turn on field required to draw an emission current density of 1 mu A/cm(2) is significantly low (almost half the value) for the SnS2/reduced graphene oxide (RGO) nanocomposite (2.65 V/mu m) compared to pristine SnS2 (4.8 V/mu m) nanosheets. The field enhancement factor beta (similar to 3200 for the SnS2 and similar to 3700 for SnS2/RGO composite) was calculated from Fowler-Nordheim (F-N) plots, which indicates that the emission is from the nanometric geometry of the emitter. The field emission current versus time plot shows overall good emission stability for the SnS2/RGO emitter. The magnitude of work function of SnS2 and a SnS2/graphene composite has been calculated from first principles density functional theory (DFT) and is found to be 6.89 eV and 5.42 eV, respectively. The DFT calculations clearly reveal that the enhanced field emission properties of SnS2/RGO are due to a substantial lowering of the work function of SnS2 when supported by graphene, which is in response to p-type doping of graphene. (C) 2014 AIP Publishing LLC.</p>1 aRout, Chandra, Sekhar1 aJoshi, Padmashree, D.1 aKashid, Ranjit, V.1 aJoag, Dilip, S.1 aMore, Mahendra, A.1 aSimbeck, Adam, J.1 aWashington, Morris1 aNayak, Saroj, K.1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/enhanced-field-emission-properties-doped-graphene-nanosheets-layered-sns2-001429nas a2200217   4500008004100000022001400041245005400055210005400109260008700163300001100250490000800261520069400269100002300963700002300986700002301009700002301032700001801055700002401073700002601097856008801123       2014                        eng d  a0003-695100aField emission properties of ZnO nanosheet arrays0 aField emission properties of ZnO nanosheet arrays  a1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScDEC  a2331010 v1053 a<p>{Electron emission properties of electrodeposited ZnO nanosheet arrays grown on Indium tin oxide coated glass substrates have been studied. Influence of oxygen vacancies on electronic structures and field emission properties of ZnO nanosheets are investigated using density functional theory. The oxygen vacancies produce unshared d electrons which form an impurity energy state; this causes shifting of Fermi level towards the vacuum, and so the barrier energy for electron extraction reduces. The ZnO nanosheet arrays exhibit a low turn-on field of 2.4 V/mu m at 0.1 mu A/cm(2) and current density of 50.1 mu A/cm(2) at an applied field of 6.4 V/mu m with field enhancement factor</p>1 aNaik, Kusha, Kumar1 aKhare, Ruchita, T.1 aChakravarty, Disha1 aMore, Mahendra, A.1 aThapa, Ranjit1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/field-emission-properties-zno-nanosheet-arrays-001785nas a2200301   4500008004100000022001400041245006700055210006600122260007700188300001400265520077300279653003601052653001901088653002201107653001901129653001101148653001301159100002601172700002301198700002301221700002001244700002301264700002701287700002301314700002101337700002401358856010101382       2014                        eng d  a1434-194800aMetallic few-layer flowerlike VS2 nanosheets as field emitters0 aMetallic fewlayer flowerlike VS2 nanosheets as field emitters  aBOSCHSTRASSE 12, D-69469 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcNOV  a5331-53363 a<p>We report first-principles DFT calculations of the single-layer VS2 work function, the experimental synthesis of flower-like few-layer-thick VS2 nanosheets by a simple one-step hydrothermal method, and the investigation of their field emission properties. The turn-on field required to draw emission current densities of 1 and 10 mu A/cm(2) were 4 and 5.01 V/mu m, respectively. The observed turn-on field values are attributed to the high field enhancement factor (ca. 2500), which is due to presence of sharp protrusions in the VS2 nanosheets. Furthermore, the field-emission current stability of the VS2 emitter shows stable behavior over a period of 12 h. Further, DFT calculations show that the work function (f) of the single-layer VS2 emitter is 6.01 eV.</p>10aDensity functional calculations10afield emission10aLayered compounds10aNanostructures10aSulfur10aVanadium1 aRout, Chandra, Sekhar1 aKhare, Ruchita, T.1 aKashid, Ranjit, V.1 aJoag, Dilip, S.1 aMore, Mahendra, A.1 aLanzillo, Nicholas, A.1 aWashington, Morris1 aNayak, Saroj, K.1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/metallic-few-layer-flowerlike-vs2-nanosheets-field-emitters-001602nas a2200229   4500008004100000022001400041245010900055210006900164260008100233300001100314490000600325520076600331653000901097653000901106653001801115653001501133653002301148100002301171700002601194700002401220856012801244       2014                        eng d  a2053-159100aMoS2 nanoparticles and h-BN nanosheets from direct exfoliation of bulk powder: one-step synthesis method0 aMoS2 nanoparticles and hBN nanosheets from direct exfoliation of  aTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLANDbIOP PUBLISHING LTDcSEP  a0350380 v13 a<p>We report facile synthesis of MoS2 nanoparticles and h-BN nanosheets using ultrasonication method in suitable solvents such as N-Methyl-2-pyrrolidone and ethylene glycol, respectively. The average size of MoS2 nanoparticles observed from TEM analysis were 4-5 nm and about a few hundreds of nm for h-BN nanosheets. Raman spectroscopy carried out on nanoparticle samples confirms the formation of MoS2 nanoparticles and h-BN nanosheets. UV-vis absorption and photoluminescence (PL) measurements carried out on the products show typical absorption and luminescence spectra of MoS2 and h-BN. Further, we attempted to decorate gold nanoparticles on nanosheets of MoS2 and h-BN which show subsequent change in Raman spectra due to charge transfer interaction.</p>10ah-BN10aMoS210aNanoparticles10ananosheets10aOptical properties1 aThripuranthaka, M.1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/mos2-nanoparticles-and-h-bn-nanosheets-direct-exfoliation-bulk-powder-one-step-synthesis02001nas a2200193   4500008004100000022001400041245009000055210006900145260008700214300001100301490000800312520125100320100002001571700002201591700002401613700002101637700002601658856012301684       2014                        eng d  a0003-695100aNegative infrared photocurrent response in layered WS2/reduced graphene oxide hybrids0 aNegative infrared photocurrent response in layered WS2reduced gr  a1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScDEC  a2435020 v1053 a<p>We report high performance IR photocurrent response of two-dimensional hybrid materials consisting of layered WS2 nanosheets and reduced graphene oxide (RGO). Comparative photocurrent response studies of WS2 nanosheets, RGO, and WS2/RGO hybrids were carried out by performing current-voltage (I-V) and time-dependent current measurements with a laser excitation source having a wavelength of 808 nm. The experimental investigations indicate that WS2/RGO hybrids show negative photocurrent response, whereas WS2 and RGO show positive photocurrent response. The negative photocurrent response of the WS2/RGO hybrids is explained using a band alignment diagram and attributed to a charge transfer mechanism between WS2 and RGO. This analysis is further corroborated by first-principles density functional calculations. The fabricated device based on WS2/RGO hybrids shows a photosensitivity R-lambda of about 6 AW(-1) and a quantum efficiency eta of similar to 924%, which demonstrates high sensitivity of the hybrid material towards IR detection. WS2/RGO hybrids are therefore promising candidates for potential applications in optoelectronic circuits and low cost, high performance, and reliable photodetectors. (C) 2014 AIP Publishing LLC.</p>1 aRatha, Satyajit1 aSimbeck, Adam, J.1 aLate, Dattatray, J.1 aNayak, Saroj, K.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/negative-infrared-photocurrent-response-layered-ws2reduced-graphene-oxide-hybrids-000783nas a2200169   4500008004100000022001400041245012500055210006900180260012500249300001100374490000800385100002300393700002300416700002600439700002400465856012400489       2014                        eng d  a0003-695100aTemperature dependent Raman spectroscopy of chemically derived few layer MoS2 and WS2 nanosheets (vol 104, 081911, 2014)0 aTemperature dependent Raman spectroscopy of chemically derived f  aCIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScMAR  a1299010 v1041 aThripuranthaka, M.1 aKashid, Ranjit, V.1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/temperature-dependent-raman-spectroscopy-chemically-derived-few-layer-mos2-and-ws2-101461nas a2200181   4500008004100000022001400041245010100055210006900156260008700225300001100312490000800323520072800331100002301059700002301082700002601105700002401131856012401155       2014                        eng d  a0003-695100aTemperature dependent Raman spectroscopy of chemically derived few layer MoS2 and WS2 nanosheets0 aTemperature dependent Raman spectroscopy of chemically derived f  a1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScFEB  a0819110 v1043 aWe have systematically investigated the temperature dependent Raman spectroscopy behavior of a few layered MoS2 and WS2 nanosheets synthesized using simple hydrothermal method. Our result reveals A(1g) and E-2g(1) modes soften as temperature increases from 77 K to 623 K. This behavior can be explained in terms of a double resonance process which is active in single-and few layer thick nanosheets. The frequency shifts and peak broadening can provide unambiguous, nondestructive, and accurate information of a few layered MoS2 and WS2. This mechanism can also be applicable in characterizing the structural, optical, electronic, and vibrational properties of other emerging layered materials. (c) 2014 AIP Publishing LLC.1 aThripuranthaka, M.1 aKashid, Ranjit, V.1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/temperature-dependent-raman-spectroscopy-chemically-derived-few-layer-mos2-and-ws2-201498nas a2200169   4500008004100000245007000041210006900111260000800180300001200188490000600200520092700206100002401133700002601157700002301183700002001206856010201226       2015                        eng d00aEmerging energy applications of two-dimensional layered materials0 aEmerging energy applications of twodimensional layered materials  cMAR  a118-1570 v33 a<p>Atomically thin semiconducting transition metal dichalcogenides (TMDCs) layered materials have recently been emerged as an exciting area of research due to accessibility for easy synthesis using various chemical and physical methods. These two-dimensional (2D) layered materials with single layer have direct and wide band gap due to which, they are more suitable for nanoelectronics and optoelectronics device applications. Here, we present a review of the energy related aspects of atomically thin layered materials like MoS2, WS2, MoSe2, WSe2, InSe, GaSe, GaTe, MoTe2, WTe2 etc. for supercapacitor, solar cell, lithium ion battery and water splitting application. By significantly assessing various materials and comparing their performances with challenging technology, the advantages and disadvantages of this promising area of energy materials are recognized, which may provide guidelines for future progress.</p>1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar1 aChakravarty, Disha1 aRatha, Satyajit  uhttps://library.ncl.res.in/content/emerging-energy-applications-two-dimensional-layered-materials01762nas a2200277   4500008004100000022001400041245006700055210006700122260008100189300001100270490000600281520085000287653003001137653001901167653001501186653001201201653001101213100002301224700002301247700002401270700002301294700001801317700002401335700002601359856009901385       2015                        eng d  a2053-159100aEnhanced electron field emission from NiCo2O4 nanosheet arrays0 aEnhanced electron field emission from NiCo2O4 nanosheet arrays  aTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLANDbIOP PUBLISHING LTDcSEP  a0950110 v23 a<p>Electron emission properties of electrodeposited spinel NiCo2O4 nanosheet arrays grown on Ni foam have been studied. The work function of NiCo2O4 was calculated by density functional theory using the plane-wave basis set and used to estimate the field enhancement factor. The NiCo2O4 nanosheet arrays exhibited a low turn-on field of 1.86 V mu m(-1) at 1 mu A cm(-2) and current density of 686 mu A cm(-2) at 3.2 V mu m(-1), with field enhancement factor beta = 1460 and good field emission current stability. The field emission properties of the NiCo2O4 nanosheet arrays showed enhanced performance compared to chemically prepared NiCo2O4 nanosheets. Hence, the nanosheet arrays have great potential as robust high performance vertical structure electron emitters for future flat panel displays and vacuum electronic device applications.</p>10aDensity functional theory10afield emission10ananosheets10aNiCo2O410aspinel1 aNaik, Kusha, Kumar1 aKhare, Ruchita, T.1 aGelamo, Rogerio, V.1 aMore, Mahendra, A.1 aThapa, Ranjit1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/enhanced-electron-field-emission-nico2o4-nanosheet-arrays-101325nas a2200193   4500008004100000022001400041245006600055210006600121260008700187300001100274490000800285520061800293100002300911700002400934700002300958700002400981700002601005856010001031       2015                        eng d  a0003-695100aEnhanced field emission of plasma treated multilayer graphene0 aEnhanced field emission of plasma treated multilayer graphene  a1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScSEP  a1235030 v1073 a<p>Electron emission properties of multilayer graphene (MLG) prepared by a facile exfoliation technique have been studied. Effect of CO2 Ar, N-2, plasma treatment was studied using Raman spectroscopy and investigated for field emission based application. The CO2 plasma treated multilayer graphene shows an enhanced field emission behavior with a low turn on field of 0.18 V/mu m and high emission current density of 1.89 mA/cm(2) at an applied field of 0.35 V/mu m. Further the plasma treated MLG exhibits excellent current stability at a lower and higher emission current value. (C) 2015 AIP Publishing LLC.</p>1 aKhare, Ruchita, T.1 aGelamo, Rogerio, V.1 aMore, Mahendra, A.1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/enhanced-field-emission-plasma-treated-multilayer-graphene-101884nas a2200229   4500008004100000022001400041245009800055210006900153260011000222300001600332490000600348520097300354100002601327700002601353700002801379700002301407700001801430700002401448700002401472700002601496856013201522       2015                        eng d  a2046-206900aFacile synthesis of Ag nanowire-rGO composites and their promising field emission performance0 aFacile synthesis of Ag nanowirerGO composites and their promisin  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAPR  a41887-418930 v53 a<p>Crystalline, ultra long silver nanowires (Ag NWs), few-layered rGO (reduced graphene oxide) and their rGO-Ag NW nanocomposite have been synthesized using a polyol reflux technique under optimized experimental conditions. The field emission performance of the rGO-Ag NW nanocomposite, rGO and Ag NW emitters was investigated. The turn on field required to draw an emission current density of similar to 1 mA cm(-2) was found to be similar to 5.00, 3.92 and 2.40 V mu m(-1) for the Ag NW, rGO and rGO-Ag NW nanocomposite emitters, respectively. The combined contribution of the sharp edges of the thin graphene sheets and high aspect ratio of the Ag nanowires, and their synergetic effect in the rGO-Ag NW nanocomposite, are responsible for the enhanced field emission behavior. First-principles density functional calculations show that the enhanced field emission may also be due to the overlapping of the electronic structures of the Ag NWs and rGO nanosheets.</p>1 aSamantara, Aneeya, K.1 aMishra, Dillip, Kumar1 aSuryawanshi, Sachin, R.1 aMore, Mahendra, A.1 aThapa, Ranjit1 aLate, Dattatray, J.1 aJena, Bikash, Kumar1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/facile-synthesis-ag-nanowire-rgo-composites-and-their-promising-field-emission-performance-001111nas a2200205   4500008004100000022001400041245006100055210006100116260011000177300001400287490000600301520036900307100002000676700002300696700002300719700001800742700002400760700002600784856009500810       2015                        eng d  a2046-206900aField emission properties of spinel ZnCo2O4 microflowers0 aField emission properties of spinel ZnCo2O4 microflowers  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcDEC  a5372-53780 v53 a<p>ZnCo2O4 microflowers were synthesized by a simple low temperature hydrothermal route. A single three-dimensional microflower consists of hundreds of self-assembled petals, with a thickness of several nanometers. These microflowers have exceptionally thin edges with a few petal layers. The ZnCo2O4 microflowers appeared to be stable and good field emitters.</p>1 aRatha, Satyajit1 aKhare, Ruchita, T.1 aMore, Mahendra, A.1 aThapa, Ranjit1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/field-emission-properties-spinel-znco2o4-microflowers-002483nas a2200205   4500008004100000022001400041245009600055210006900151260011000220300001600330490000600346520165300352100002402005700002602029700002202055700002302077700002402100700002302124856013002147       2015                        eng d  a2046-206900aOxidative and membrane stress-mediated antibacterial activity of WS2 and rGO-WS2 nanosheets0 aOxidative and membrane stressmediated antibacterial activity of   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG  a74726-747330 v53 a<p>Graphene-based materials have strong cytotoxic attributes against bacteria due to their unique physicochemical properties. We examined the antibacterial activities of nanosheets of the graphene analogue tungsten disulphide (WS2) and a composite of reduced graphene oxide-tungsten disulphide (rGO-WS2), comparing them with reduced graphene oxide (rGO) by a time and concentration dependent viability assay and growth curve studies against four bacterial strains: Gram negative Escherichia coli (E. coli) and Salmonella typhimurium (S. typhimurium), and Gram positive Bacillus subtilis (B. subtilis) and Staphylococcus epidermidis (S. epidermidis). The nanosheets of the rGO-WS2 composite caused a more significant retardation in bacterial growth and inhibitory effect on the tested bacterial strains than WS2, followed by rGO. The tested E. coli and B. subtilis strains were more susceptible than the other strains. A mechanistic study revealed that rGO and WS2 did not produce the superoxide anion (O-2(-)) or reactive oxygen species (ROS), but the nanocomposite of rGO-WS2 did produce both. However, all these materials did oxidize glutathione, which serves as a redox state mediator in bacteria. We conclude that the antimicrobial mechanism is due to the combined effect of initial cell deposition on the rGO-WS2 materials, the membrane stress due to direct contact with the nanosheets, and the produced superoxide anion-independent oxidation mechanisms. The beneficial aspects of the physicochemical properties of rGO-WS2, such as its size and conductivity, can be precisely customized to reduce its health and environmental risk factors.</p>1 aNavale, Govinda, R.1 aRout, Chandra, Sekhar1 aGohil, Kushal, N.1 aDharne, Mahesh, S.1 aLate, Dattatray, J.1 aShinde, Sandip, S.  uhttps://library.ncl.res.in/content/oxidative-and-membrane-stress-mediated-antibacterial-activity-ws2-and-rgo-ws2-nanosheets-002541nas a2200229   4500008004100000022001400041245013000055210006900185260011000254300001600364490000600380520161200386100002801998700002002026700002302046700002202069700002302091700001802114700002602132700002402158856012902182       2015                        eng d  a2046-206900aPt-nanoparticle functionalized carbon nano-onions for ultra-high energy supercapacitors and enhanced field emission behaviour0 aPtnanoparticle functionalized carbon nanoonions for ultrahigh en  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcSEP  a80990-809970 v53 a<p>In the present work, we have investigated the charge storage capacitive response and field emission behaviour of platinum (Pt) nanoparticles decorated on carbon nano onions (CNOs) and compared them with those of pristine carbon nano onions. The specific capacitance observed for Pt-CNOs is 342.5 F g(-1), about six times higher than that of pristine CNOs, at a scan rate of 100 mV s(-1). The decoration with Pt nanoparticles, without any binder or polymer separator on the CNO, leading to enhanced supercapacitance is due to easy accessibility of Na2SO4 electrolyte in the active material. The Density Functional Theory (DFT) calculations of these systems reveal enhancement in the Density of States (DOS) near the Fermi energy (E-F) on account of platinum decoration on the CNOs. Furthermore, the field emission current density of similar to 0.63 mA cm(-2) has been achieved from the Pt-CNOs emitter at an applied electric field of similar to 4.5 V mu m(-1) and from the pristine CNOs sample current density of similar to 0.4 mA cm(-2) has been achieved at an applied electric field of similar to 6.6 V mu m(-1). The observed enhanced field emission behavior has been attributed to the improved electrical conductivity and increased emitting sites of the Pt-CNO emitter. The field emission current stability of the Pt-CNO emitter over a longer duration is found to be good. The observed results imply multifunctional potential of Pt-CNOs, as supercapacitor material in various next generation hybrid energy storage devices, and field emitters for next generation vacuum nano/microelectronic devices.</p>1 aSuryawanshi, Sachin, R.1 aKaware, Vaibhav1 aChakravarty, Disha1 aWalke, Pravin, S.1 aMore, Mahendra, A.1 aJoshi, Kavita1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/pt-nanoparticle-functionalized-carbon-nano-onions-ultra-high-energy-supercapacitors-and-001667nas a2200181   4500008004100000022001400041245007400055210006900129260011000198300001600308490000600324520094900330100003401279700002401313700001801337700002601355856010401381       2015                        eng d  a2040-336400aRecent developments in 2D layered inorganic nanomaterials for sensing0 aRecent developments in 2D layered inorganic nanomaterials for se  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN  a13293-133120 v73 a<p>Two dimensional layered inorganic nanomaterials (2D-LINs) have recently attracted huge interest because of their unique thickness dependent physical and chemical properties and potential technological applications. The properties of these layered materials can be tuned via both physical and chemical processes. Some 2D layered inorganic nanomaterials like MoS2, WS2 and SnS2 have been recently developed and employed in various applications, including new sensors because of their layer-dependent electrical properties. This article presents a comprehensive overview of recent developments in the application of 2D layered inorganic nanomaterials as sensors. Some of the salient features of 2D materials for different sensing applications are discussed, including gas sensing, electrochemical sensing, SERS and biosensing, SERS sensing and photodetection. The working principles of the sensors are also discussed together with examples.</p>1 aKannan, Padmanathan, Karthick1 aLate, Dattatray, J.1 aMorgan, Hywel1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/recent-developments-2d-layered-inorganic-nanomaterials-sensing-001766nas a2200217   4500008004100000022001400041245015400055210006900209260011000278300001600388490000600404520084700410100002201257700002201279700002501301700002401326700002401350700002601374700002401400856012401424       2016                        eng d  a2046-206900aEffect of plasma treatment on multilayer graphene: X-ray photoelectron spectroscopy, surface morphology investigations and work function measurements0 aEffect of plasma treatment on multilayer graphene Xray photoelec  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAY  a48843-488500 v63 a<p>We report here the effect of plasma treatment on multilayer graphene samples as determined by X-ray photoelectron spectroscopy and surface morphology studies with atomic force microscopy, scanning electron microscopy and transmission electron microscopy. The plasma treatment was modified to introduce controlled levels of defects and functionalities to the graphene samples to give tunable properties. The elemental composition and structure were investigated by XPS and micro Raman spectroscopy. The XPS study showed that there was a slight variation in the sp(2)/sp(3) hybridization ratio between the plasma-treated samples and the pristine sample. Kelvin probe measurements were carried out on all the multilayer graphene samples and indicated a slight variation in the work function of the graphene samples after plasma treatment.</p>1 aPatil, Urmila, V.1 aPawbake, Amit, S.1 aMachuno, Luis, G. B.1 aGelamo, Rogerio, V.1 aJadkar, Sandesh, R.1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/effect-plasma-treatment-multilayer-graphene-x-ray-photoelectron-spectroscopy-surface01594nas a2200193   4500008004100000022001400041245007700055210006900132260011000201300001600311490000600327520084100333100002301174700002301197700002301220700002401243700002601267856010701293       2016                        eng d  a2046-206900aGlucose sensing and low-threshold field emission from MnCo2O4 nanosheets0 aGlucose sensing and lowthreshold field emission from MnCo2O4 nan  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR  a29734-297400 v63 a<p>Manganese cobalt oxide (MnCo2O4) nanosheets were grown on nickel (Ni) foam by a simple electrodeposition method. The as-synthesized nanosheets were characterized using X-ray diffraction and scanning electron microscopy. The Ni foam supports the growth of MnCo2O4 nanosheets without any aggregation, thereby increasing its catalytic and electronic properties. The electrochemical studies show that MnCo2O4 exhibits excellent electrocatalytic activity towards glucose sensing applications. The MnCo2O4 based glucose sensor shows a good sensitivity value of 8.2 mA mM(-1) cm(-2), with a response time of 19 s. In addition to this, field emission studies of as-synthesized MnCo2O4 reveal a low turn-on field value of 1.9 V mm(-1) and good emission current stability, demonstrating MnCo2O4 nanosheets as a good field emitter material.</p>1 aNaik, Kusha, Kumar1 aKhare, Ruchita, T.1 aMore, Mahendra, A.1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/glucose-sensing-and-low-threshold-field-emission-mnco2o4-nanosheets01549nas a2200181   4500008004100000245008300041210006900124260000800193300001800201490000600219520090300225100003201128700002401160700002201184700002601206700002401232856011101256       2016                        eng d00aSnS2 nanoflakes for efficient humidity and alcohol sensing at room temperature0 aSnS2 nanoflakes for efficient humidity and alcohol sensing at ro  cOCT  a105421-1054270 v63 aWe report a one step facile hydrothermal synthesis of layered SnS2 nanoflakes. The as-synthesized nanosheets are characterized using X-ray diffraction, Raman spectroscopy and Transmission Electron Microscopy (TEM). The humidity sensing behavior of SnS2 nanoflake sensor device were investigated in the range of 11-97% of relative humidity (RH) at room temperature. The response time of similar to 85 s and recovery time of similar to 6 s were observed for the SnS2 nanoflake based humidity sensor. A maximum sensitivity of 11.300% is recorded. We also investigate the SnS2 nanoflake based alcohol sensing properties towards methanol, ethanol and iso-propyl alcohol. An exclusive selectivity towards methanol with a response of 1580 is shown as compared to other analytes. The response time of similar to 67 s and recovery time of just 5 s were observed for the SnS2 nanoflake based methanol sensor.1 aBharatula, Lakshmi, Deepika1 aErande, Manisha, B.1 aMulla, Imtiaz, S.1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/sns2-nanoflakes-efficient-humidity-and-alcohol-sensing-room-temperature01571nas a2200169   4500008004100000245012500041210006900166260000800235300001200243490000800255520091500263100001801178700002301196700002401219700002601243856013201269       2017                        eng d00aElectrochemical synthesis of a ternary transition metal sulfide nanosheets on nickel foam and energy storage application0 aElectrochemical synthesis of a ternary transition metal sulfide   cFEB  a154-1610 v6953 aWe report growth of nickel cobalt sulfide (NCS) ultrathin nanosheets directly on Ni foam substrate by a facile and novel electrodeposition method. The as-prepared NCS sample is used as an electrode material for supercapacitor application due to their large electrochemically active surface area and interconnected nanosheet channels for the facilitation of ion transportation. The NCS nanosheets possess enhanced electrochemical performance in terms of fast and high reversible faradaic reactions characterized by prominent oxidation and reduction peaks. NCS nanosheets showed an ultrahigh specific capacitance of 1712 Fg(-1) at a current density of 1 Ag-1 with excellent cyclic stability. The excellent supercapacitor performance of NCS nanosheets can be attributed to its rich redox reactions as well as high transport rate for both electrolyte ions and electrons. (C) 2016 Elsevier B.V. All rights reserved.1 aSahoo, Surjit1 aNaik, Kusha, Kumar1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/electrochemical-synthesis-ternary-transition-metal-sulfide-nanosheets-nickel-foam-and-energy01599nas a2200181   4500008004100000245008100041210006900122260000800191300001300199490000800212520097300220100002501193700002001218700002301238700002401261700002601285856010601311       2017                        eng d00aEnhanced field emission performance of NiMoO4 nanosheets by tuning the phase0 aEnhanced field emission performance of NiMoO4 nanosheets by tuni  cOCT  a270-274 0 v4183 aIn this paper we report, large scale synthesis of a and beta-NiMoO4 by a facile hydrothermal method and we observed that urea plays important role on the growth of beta-NiMoO4 nanosheets. We have also carried out field emission (FE) investigations of alpha and beta-NiMoO4 at a base pressure of similar to 1 x 10(-8) mbar. The obtained turn-on field at emission current density of 1 mu A/cm(2) for beta-NiMoO4 nanosheets and alpha-NiMoO4 is 1.3V/mu m and 2.2V/mu m respectively were observed. The maximum field emission current density of 1.006 mA/cm(2) at an applied electric field of 2.7V/mu m was achieved for beta-NiMoO4 nanosheets. Furthermore, we found that the beta-NiMoO4 nanosheets possess good field emission performance compared to alpha-NiMoO4. The results indicate that NiMoO4 can be used as a promising material in FE applications with possibility of tuning field emission performance by controlling the phase. (C) 2017 Elsevier B.V. All rights reserved.1 aBankar, Prashant, K.1 aRatha, Satyajit1 aMore, Mahendra, A.1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/enhanced-field-emission-performance-nimoo4-nanosheets-tuning-phase01548nas a2200181   4500008004100000245009200041210006900133260000800202300001400210490000700224520090300231100002001134700002301154700002001177700002301197700002601220856012001246       2017                        eng d00aIron-carbon nanohybrid particles as environmentally benign electrode for supercapacitor0 aIroncarbon nanohybrid particles as environmentally benign electr  cFEB  a1665-16740 v213 a<p>In this work, we report the synthesis and electrode applications of iron-carbon nanohybrid particles prepared by carbonization of a nanocomposite of FeOOH nanoneedles and melamine-formaldehyde resin. The chemical composition and microstructure of the material have been characterized using ICP-AES, FT-IR, XRD, FESEM, TEM and XPS. The supercapacitor properties of the MF-Fe-C are studied in detail. A thorough comparison of the supercapacitor performances of MF-Fe-C and bare MF-C has been carried out through detailed electrochemical characterisations employing both two and three-electrode techniques. The nanohybrid showed an enhanced energy density of 127.75 WhKg⁻¹, specific capacitance of ∼408 F g⁻¹ at 1 mVs⁻¹ scan rate, and excellent cyclic stability even after 1000 charge-discharge cycles, making it an intriguing material for high energy density supercapacitor devices.</p>1 aRatha, Satyajit1 aVernekar, Dnyanesh1 aSivaneri, Kavin1 aJagadeesan, Dinesh1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/iron-carbon-nanohybrid-particles-environmentally-benign-electrode-supercapacitor02374nas a2200193   4500008004100000022001400041245017000055210006900225260000800294300001400302490000800316520160800324100002501932700002101957700002901978700002402007700002602031856012302057       2018                        eng d  a1520-610600aImproved nonenzymatic glucose sensing properties of Pd/MnO2 nanosheets: synthesis by facile microwave-assisted route and theoretical insight from quantum simulations0 aImproved nonenzymatic glucose sensing properties of PdMnO2 nanos  cAUG  a7636-76460 v1223 a<p>The electrocatalytic properties of manganese oxide (MnO2) can be improved significantly by making hybrids/composites with noble metals (Au, Pd). Here, efforts have been made to synthesize the MnO2/Au and MnO2/Pd nanocomposites by a facile, rapid microwave irradiation method. The products characterized by X-ray diffraction and transmission electron microscopy exhibited their tetragonal phase and nanosheet morphology. The efficiency of the prepared composite materials as glucose sensor was tested by cyclic voltammetry and chronoamperometry measurements, and the results are discussed. The study revealed that successful modification of MnO2 by Pd led to excellent sensing performance by the reduction of size and the synergistic effect between MnO2 and PdO, which expedites the electron transfer. Besides, the wide detection range, good selectivity, and stability demonstrate its robustness in the design of electrochemical sensor platform. To get theoretical insight into the excellent sensing performance of MnO2/Pd, we have performed detailed density functional theory simulations to explore the charge transfer and bonding mechanism of glucose on MnO2 and Pd/Au-doped MnO2 surface. Pd is bonded strongly on MnO2 and makes MnO2/Pd more conducting due to the enhancement of density of states near Fermi level. The higher binding energy of glucose and enhanced charge transfer from glucose to Pd-doped MnO2 compared to bare MnO2 infer that Pd-doped MnO2 possess superior charge-transfer kinetics, resulting in higher glucose sensing performance, which supports our experimental observations.</p>1 aPonnusamy, Rajeswari1 aGangan, Abhijeet1 aChakraborty, Brahmananda1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/improved-nonenzymatic-glucose-sensing-properties-pdmno2-nanosheets-synthesis-facile02134nas a2200277   4500008004100000022001200041245010700053210006900160260000900229300001200238490000700250520121100257653001301468653001801481653001101499653002801510653002301538100002201561700001901583700002501602700002401627700002701651700002601678700002401704856012801728       2018                        eng d  a925963500aTemperature and pressure dependent Raman spectroscopy of plasma treated multilayer graphene nanosheets0 aTemperature and pressure dependent Raman spectroscopy of plasma   cAPR   a146-1560 v843 a<p>Understanding of the fine structure at the atomic level and properties of graphene by creating defects is important from the point of view of thermal and stress management. Here we report Raman spectroscopic studies on pristine and plasma treated multilayer graphene to explore the remarkable structure and phonon properties with temperature and pressure. Temperature dependent studies illustrate monotonic softening of G and G′ bands in the temperature range 78 to 573 K. This process can be of fundamental importance in other promising and emerging nano and heterostructured materials. The pressure dependent Raman spectroscopic investigations on G-band of these samples were carried out up to 25 GPa using a diamond anvil cell. Comparatively weak and more compressible nature of the G band (E2g in-plane mode) as a function of applied pressure is found in plasma treated graphene. After pressure release, the samples recover to their original ordered structure. The present study is important for further understanding of the fine structure, properties and effect of defects in graphene, which can affect the atomic bonds, thermal expansion, specific heat, and thermal conductivity as well.</p>10agraphene10ahigh pressure10aPhonon10aPlasma treated graphene10aRaman spectroscopy1 aPawbake, Amit, S.1 aMishra, K., K.1 aMachuno, Luis, G. B.1 aGelamo, Rogerio, V.1 aRavindranathan, T., R.1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/temperature-and-pressure-dependent-raman-spectroscopy-plasma-treated-multilayer-graphene02036nas a2200181   4500008004100000245010300041210006900144260000900213300001600222490000600238520136400244100002501608700001801633700002301651700002401674700002601698856013001724       2019                        eng d00aDevelopment of pristine and Au-decorated Bi2O3/Bi2WO6 nanocomposites for supercapacitor electrodes0 aDevelopment of pristine and Audecorated Bi2O3Bi2WO6 nanocomposit  cOCT   a32573-325800 v93 a<p>Pristine and Au-decorated Bi2O3/Bi2WO6 nanocomposites were synthesized via a facile hydrothermal method. Characterization techniques such as XRD, FESEM, HRTEM and XPS were used to explore the structural, morphological and electronic properties. Furthermore, electrochemical characterizations including cyclic voltammetry (CV), the galvanostatic charge-discharge (GCD) method, and electrochemical impedance spectroscopy (EIS) were performed to investigate the supercapacitance behaviour of the synthesized materials. Interestingly, the Au-decorated Bi2O3/Bi2WO6 nanocomposite showed a higher capacitance of 495.05 F g(-1) (1 M aqueous KOH electrolyte) with improved cycling stability (99.26%) over 2000 cycles, measured at a current density of 1 A g(-1), when compared to the pristine Bi2O3/Bi2WO6 composite (capacitance of 148.81 F g(-1) and good cycling stability (95.99%) over 2000 cycles at a current density of 1 A g(-1)). The results clearly reveal that the decoration of the Bi2O3/Bi2WO6 composite with Au nanoparticles enhances its supercapacitance behaviour, which can be attributed to an increase in electrical conductivity, good electrical contact between the electrode and electrolyte, and an increase in effective area. The Au-decorated Bi2O3/Bi2WO6 nanocomposite can be considered as an electrode material for supercapacitor application.</p>
1 aGote, Gorkshnath, H.1 aPathak, Mansi1 aMore, Mahendra, A.1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/development-pristine-and-au-decorated-bi2o3bi2wo6-nanocomposites-supercapacitor-electrodes01986nas a2200181   4500008004100000245011900041210006900160260000800229520126700237100002501504700002201529700002101551700002101572700002901593700002401622700002601646856013201672       2019                        eng d00aExperimental and density functional theory investigations of catechol sensing properties of ZnO/RGO nanocomposites0 aExperimental and density functional theory investigations of cat  cNOV3 a<p>Catechol, an essential industrial feedstock is one of the major environmental pollutant which causes several health issues including skin irritation, eye damage and genetic defects. In this work, we have investigated the catechol sensing performance of ZnO/RGO composites for its quantitative detection. ZnO/RGO composite showed superior electron transfer kinetics, sensitivity (162.04 mu A mM cm(-2)) and lower detection limit (47 nM) than that of bare ZnO nanoparticles. Further, the change in the zeta potential towards the lower negative demonstrated the strong electrostatic interaction between ZnO-RGO and catechol where it is converted as 1, 2 Benzoquinone through redox reactions. By using state of the art of Density Functional Theory simulations, we have demonstrated the interaction of catechol molecule on various ZnO clusters and RGO supported ZnO clusters. The strong bonding between p orbital of O atom of catechol and d orbital of Zn atom and its charge transfer facilitate the oxidation of catechol molecule. In the presence of RGO, the binding energy of catechol and charge transfer increases which qualitatively infer that RGO/ZnO exhibits higher sensitivity compared to bare ZnO and in consistency with the experimental observations.</p>
1 aPonnusamy, Rajeswari1 aVenkatesan, Rajiu1 aGangan, Abhijeet1 aSamal, Rutuparna1 aChakraborty, Brahmananda1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/experimental-and-density-functional-theory-investigations-catechol-sensing-properties-znorgo02056nas a2200241   4500008004100000022001400041245014000055210006900195260000800264300001400272490000600286520118400292653003001476653002401506653001901530653002001549100002101569700002901590700001801619700002401637700002601661856012701687       2019                        eng d  a2168-048500aFacile production of mesoporous WO3-rGO hybrids for high-performance supercapacitor electrodes: an experimental and computational study0 aFacile production of mesoporous WO3rGO hybrids for highperforman  cJAN  a2350-23590 v73 a<p>This work explored a promising supercapacitor electrode material (WO3-rGO hybrids) synthesized via a simplistic one-pot hydrothermal synthesis route. Various analytical studies (X-ray diffraction study, Raman spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller analysis) were employed in furtherance to explore the structural, morphological, compositional, and surface areal properties of the prepared materials. The enhancement in electrochemical supercapacitive properties were evaluated from pure hexagonal phase WO3 to the various hybrids, depending on the concentration of GO introduced into it, using cyclic voltammetry, galvanostatic charge/discharge, and electrochemical impedance spectroscopy. The WG-80 composite revealed the high rise in capacitance value of 801.6 F/g overcoming the individual capacitance of rGO (71.11 F/g) and WO3 (94.22 F/g) at a current density of 4 A/g with good cycling stability (75.7%) over 5000 cycles. We have presented quantum capacitance from ab initio calculations and provided theoretical explanation from the orbital interactions.</p>10aDensity functional theory10aHydrothermal method10asupercapacitor10aWO3-rGO hybrids1 aSamal, Rutuparna1 aChakraborty, Brahmananda1 aSaxena, Manav1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/facile-production-mesoporous-wo3-rgo-hybrids-high-performance-supercapacitor-electrodes01171nas a2200133   4500008004100000245005800041210005800099260001300157520070900170100001800879700002600897700002400923856009000947       2019                        eng d00aFundamentals and sensing applications of 2D materials0 aFundamentals and sensing applications of 2D materials  bElsevier3 aFundamentals and Sensing Applications of 2D Materials provides a comprehensive understanding of a wide range of 2D materials. Examples of fundamental topics include: defect and vacancy engineering, doping and advantages of 2D materials for sensing, 2D materials and composites for sensing, and 2D materials in biosystems. A wide range of applications are addressed, such as gas sensors based on 2D materials, electrochemical glucose sensors, biosensors (enzymatic and non-enzymatic), and printed, stretchable, wearable and flexible biosensors. Due to their sub-nanometer thickness, 2D materials have a high packing density, thus making them suitable for the fabrication of thin film based sensor devices.1 aHywel, Morgan1 aRout, Chandra, Sekhar1 aLate, Dattatray, J.  uhttps://library.ncl.res.in/content/fundamentals-and-sensing-applications-2d-materials01126nas a2200145   4500008004100000245003900041210003900080260001300119300001200132520070000144100002400844700001500868700002600883856007100909       2019                        eng d00aPhoto sensor based on 2D materials0 aPhoto sensor based on 2D materials  bElsevier  a465-4793 aThis chapter starts with a general introduction to the interaction of light with matter and use of this principle for sensing. Photo-sensing devices based on two-dimensional (2D) materials are compared to conventional designs and their respective differences discussed in detail. A range of 2D materials are introduced with a generic comparison based on their individual properties and importance to the generation of a photoresponse. Besides transition-metal dichalcogenides, the chapter also deals with black phosphorous photosensor devices. Different heterostructure architectures based on 2D layered structures are investigated and their role in next generation optoelectronics is discussed.1 aLate, Dattatray, J.1 aBhat, Anha1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/photo-sensor-based-2d-materials01821nas a2200217   4500008004100000022001400041245010900055210006900164260000900233300001600242490000700258520105400265100002701319700002601346700001901372700001901391700002101410700002401431700002601455856012201481       2019                        eng d  a1477-922600aSynthesis of a 3D free standing crystalline NiSex matrix for electrochemical energy storage applications0 aSynthesis of a 3D free standing crystalline NiSex matrix for ele  cDEC   a16873-168810 v483 a<p>The electrochemical performance for energy storage of three-dimensional (3D) self-supported heterogeneous NiSex cubic-orthorhombic nanocrystals grown by a facile one-step chemical vapour deposition (CVD) approach on Ni foam substrates has been explored. NiSex shows a high specific capacitance of 1333 F g(-1) with ultra-high energy (105 W h kg(-1)) and power (54 kW kg(-1)) densities. Furthermore, by integrating the as-grown NiSex as the anode and reduced graphene oxide as the cathode, a hybrid super-capacitor (HSC) prototype with a coin cell configuration has been fabricated. The device shows better capacitance (40 F g(-1)) with high energy (22 W h kg(-1)) and power (5.8 kW kg(-1)) densities and robust cycling durability (similar to 88% capacitance retention after 10 000 repeated cycles). For practical reliability of the as-fabricated HSC, a red LED has been illuminated by connecting it with two charged coin cells. These outstanding performances of the HSC prove to be promising for applications in high energy storage systems.</p>
1 aDinara, Syed, Mukulika1 aSamantara, Aneeya, K.1 aDas, Jiban, K.1 aBehera, J., N.1 aNayak, Saroj, K.1 aLate, Dattatray, J.1 aRout, Chandra, Sekhar  uhttps://library.ncl.res.in/content/synthesis-3d-free-standing-crystalline-nisex-matrix-electrochemical-energy-storage02119nas a2200289   4500008004100000245006900041210006800110260000800178300001400186490000600200520126400206653001101470653001401481653002101495653001501516653001401531653001301545100001801558700002201576700002201598700001901620700002601639700001801665700002301683700002301706856010001729       2021                        eng d00aCo-decorated tellurium nanotubes for energy storage applications0 aCodecorated tellurium nanotubes for energy storage applications  cSEP  a9008-90210 v43 aThis paper explicitly discusses the synthesis of Co-decorated Te nanotubes (NTs) using Te NTs as the sacrificial template and the evaluation of their electrochemical performance. First, one-dimensional (1D) Te NTs were synthesized and characterized by spectroscopic and microscopic tools such as UV-visible spectroscopy, X-ray diffraction spectroscopy, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, high-resolution transmission electron microscopy, and energy-dispersive X-ray spectroscopy analyses. The as-prepared hexagonal Te NTs (h-Te NTs) possess diameters of about 35 +/- 5 nm and lengths of about 500 +/- 50 nm and were used for the synthesis of Co-decorated Te NTs. The 1D nanostructure with excellent conductivity enables the material to show excellent electrochemical performance. The asymmetric assembly of the CoTe-2//AC electrode material displayed a high specific capacitance of 147 F g(-1) (specific capacity, 162 C g(-1) at a current density of 2 A g(-1) in 4 M KOH electrolyte. In addition to that, the assembly of CoTe-2//AC achieved an excellent energy density of 51.1 W h kg(-1) at a power density of 2294 W kg(-1) and confirmed the as-synthesized Co-decorated Te NTs to be an excellent electrode material.10acobalt10ananotubes10apseudocapacitors10asurfactant10aTellurium10atemplate1 aBhol, Prangya1 aSwain, Swarnalata1 aJena, Satyaranjan1 aBhatte, Kushal1 aRout, Chandra, Sekhar1 aSaxena, Manav1 aJadhav, Arvind, H.1 aSamal, Akshaya, K.  uhttps://library.ncl.res.in/content/co-decorated-tellurium-nanotubes-energy-storage-applications