02255nas a2200265 4500008004100000022001400041245013400055210006900189260009500258300001200353490000800365520121200373653002101585653002401606653003501630653001901665653002301684100002501707700002401732700002801756700002501784700002601809700003001835856012401865 2011 eng d a0003-269700aCarbon nanotube-modified sodium dodecyl sulfate-polyacrylamide gel electrophoresis for molecular weight determination of proteins0 aCarbon nanotubemodified sodium dodecyl sulfatepolyacrylamide gel a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcFEB a230-2350 v4093 a

The effect of incorporating carbon nanotubes (CNTs) in the gel matrix on the electrophoretic mobility of proteins based on their molecular weight differences was investigated using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). More specifically, a reduction in standard deviation in the molecular weight calibration plots by 55% in the case of multiwalled carbon nanotubes (MWCNTs) and by 34% in the case of single-walled carbon nanotubes (SWCNTs) compared with that of pristine polyacrylamide gels was achieved after incorporating an insignificant amount of functionalized CNTs into the gel matrix. A mechanism based on a more uniform pore size distribution in CNT modified polyacrylamide gel matrix is proposed. Furthermore, the impact of SWCNTs and MWCNTs on the mobility of proteins in different molecular weight regimes at a given acrylamide concentration offers a tunable gel matrix in terms of the selection of molecular weight ranges of proteins. The robustness and excellent reproducibility of the CNT-PAGE protocol are expected to have a significant impact on the molecular weight determination of newly isolated proteins. (C) 2010 Elsevier Inc. All rights reserved.

10aCarbon nanotubes10aGel electrophoresis10aMolecular weight determination10aPolyacrylamide10aProtein separation1 aParthasarathy, Meera1 aDebgupta, Joyashish1 aKakade, Bhalchandra, A.1 aAnsary, Abu, Ayoobul1 aKhan, Mohammad, Islam1 aPillai, Vijayamohanan, K. uhttps://library.ncl.res.in/content/carbon-nanotube-modified-sodium-dodecyl-sulfate-polyacrylamide-gel-electrophoresis-001841nas a2200169 4500008004100000022001400041245013400055210006900189260011000258300001600368490000700384520107200391100002401463700002801487700003001515856012601545 2011 eng d a1463-907600aCompetitive wetting of acetonitrile and dichloromethane in comparison to that of water on functionalized carbon nanotube surfaces0 aCompetitive wetting of acetonitrile and dichloromethane in compa aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL a14668-146740 v133 a

Differential wetting of pristine and ozonized carbon nanotubes has been studied using solvents like acetonitrile and dichloromethane in comparison to the well-known wetting behavior of water. Based on their unique structural and physical properties, functionalized CNT substrates have been used due to the fact that independent variation in molecular as well as electronic properties could be controlled by understanding the wetting of these liquids on carbon nanotubes (CNTs), both pristine as well as ozone treated. The sensitivity of the wetting behavior with respect to molecular interactions has been investigated using contact angle measurements while Raman and XPS studies unravel the differential wetting behavior. Charge-transfer between adsorbed molecules and CNTs has been identified to play a crucial role in determining the interfacial energies of these two liquids, especially in the case of acetonitrile. Ozone treatment has been observed to affect the surface properties of pristine CNTs along with a concomitant change in the wetting dynamics.

1 aDebgupta, Joyashish1 aKakade, Bhalchandra, A.1 aPillai, Vijayamohanan, K. uhttps://library.ncl.res.in/content/competitive-wetting-acetonitrile-and-dichloromethane-comparison-water-functionalized-001530nas a2200193 4500008004100000022001400041245012100055210006900176260007100245300001400316490000800330520075400338100002401092700002401116700001901140700002001159700003001179856012701209 2011 eng d a0002-786300aElectrochemical unzipping of multi-walled carbon nanotubes for facile synthesis of high-quality graphene nanoribbons0 aElectrochemical unzipping of multiwalled carbon nanotubes for fa a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR a4168-41710 v1333 a

Here we report a remarkable transformation of carbon nanotubes (CNTs) to nanoribbons composed of a few layers of graphene by a two-step electrochemical approach. This consists of the oxidation of CNTs at controlled potential, followed by reduction to form graphene nanoribbons (GNRs) having smooth edges and fewer defects, as evidenced by multiple characterization techniques, including Raman spectroscopy, atomic force microscopy, and transmission electron microscopy. This type of ``unzipping'' of CNTs (single-walled, multi-walled) in the presence of an interfacial electric field provides unique advantages with respect to the orientation of CNTs, which might make possible the production of GNRs with controlled widths and fewer defects.

1 aShinde, Dhanraj, B.1 aDebgupta, Joyashish1 aKushwaha, Ajay1 aAslam, Mohammed1 aPillai, Vijayamohanan, K. uhttps://library.ncl.res.in/content/electrochemical-unzipping-multi-walled-carbon-nanotubes-facile-synthesis-high-quality-001109nas a2200169 4500008004100000022001400041245011100055210006900166260011000235300001400345490000700359520036900366100002400735700002400759700003000783856012600813 2012 eng d a1359-734500aIn situ electrochemical organization of CdSe nanoclusters on graphene during unzipping of carbon nanotubes0 aIn situ electrochemical organization of CdSe nanoclusters on gra aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcFEB a3088-30900 v483 a

In situ decoration of very small CdSe quantum dots on graphene nanoribbons (GNRs) has been achieved during the electrochemical unzipping of single walled carbon nanotubes. Critical parameters like the width of the GNRs, size distribution of quantum dots and their organization on GNRs have been shown to be strongly dependent on the electric field and time.

1 aDebgupta, Joyashish1 aShinde, Dhanraj, B.1 aPillai, Vijayamohanan, K. uhttps://library.ncl.res.in/content/situ-electrochemical-organization-cdse-nanoclusters-graphene-during-unzipping-carbon-001592nas a2200253 4500008004100000022001400041245014200055210006900197260011000266300001400376490000600390520058900396100001900985700002401004700002401028700002101052700001801073700002001091700002401111700002301135700002301158700002901181856012801210 2012 eng d a2040-336400aLaser synthesized super-hydrophobic conducting carbon with broccoli-type morphology as a counter-electrode for dye sensitized solar cells0 aLaser synthesized superhydrophobic conducting carbon with brocco aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV a6730-67340 v43 a

A laser photochemical process is introduced to realize superhydrophobic conducting carbon coatings with broccoli-type hierarchical morphology for use as a metal-free counter electrode in a dye sensitized solar cell. The process involves pulsed excimer laser irradiation of a thin layer of liquid haloaromatic organic solvent o-dichlorobenzene (DCB). The coating reflects a carbon nanoparticle-self assembled and process-controlled morphology that yields solar to electric power conversion efficiency of 5.1% as opposed to 6.2% obtained with the conventional Pt-based electrode.

1 aGokhale, Rohan1 aAgarkar, Shruti, A.1 aDebgupta, Joyashish1 aShinde, Deodatta1 aLefez, Benoit1 aBanerjee, Abhik1 aJog, Jyoti, Prakash1 aMore, Mahendra, A.1 aHannoyer, Beatrice1 aOgale, Satishchandra, B. uhttps://library.ncl.res.in/content/laser-synthesized-super-hydrophobic-conducting-carbon-broccoli-type-morphology-counter-001533nas a2200265 4500008004100000022001400041245006100055210006100116260009200177300001200269490000800281520071500289653000801004653001001012653000801022653000801030100001701038700001901055700001901074700001701093700002401110700001701134700002101151856009501172 2012 eng d a1042-015000aSHI irradiation induced effects in functionalized MWCNTs0 aSHI irradiation induced effects in functionalized MWCNTs a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcFEB a569-5760 v1673 a

Multi-walled carbon nanotubes (MWCNTs) have attracted extensive attention globally due to their applications in modern nanotechnology. It is very important to study the effects on these MWCNTs under swift heavy ion (SHI) irradiation since ion irradiation has been recognized as one of the best tools for nanostructuring of materials, in general. Here, we present the effects of 80MeV Ni ions with a fluence ranging from 3 x 10(12) to 3 x 10(13) ions/cm(2) on functionalized MWCNT mats. The properties of pristine and irradiated samples were studied using X-ray diffraction, Raman spectroscopy and transmission electron microscopy. The effects of SHI irradiation on these samples are discussed in detail.

10aCNT10aRaman10aSHI10aTEM1 aSaikiran, V.1 aPathak, A., P.1 aRao, Srinivasa1 aDevaraju, G.1 aDebgupta, Joyashish1 aKyriakou, I.1 aEmfietzoglou, D. uhttps://library.ncl.res.in/content/shi-irradiation-induced-effects-functionalized-mwcnts-001025nas a2200157 4500008004100000022001400041245010000055210006900155260011000224300001400334490000600348520033400354100002400688700003000712856012500742 2013 eng d a2040-336400aThiolated graphene - a new platform for anchoring CdSe quantum dots for hybrid heterostructures0 aThiolated graphene a new platform for anchoring CdSe quantum dot aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR a3615-36190 v53 a

Effective organization of small CdSe quantum dots on graphene sheets has been achieved by a simple solution exchange with thiol terminated graphene prepared by diazonium salt chemistry. This generic methodology of CdSe QD attachment to any graphene surface has remarkable implications in designing hybrid heterostructures.

1 aDebgupta, Joyashish1 aPillai, Vijayamohanan, K. uhttps://library.ncl.res.in/content/thiolated-graphene-new-platform-anchoring-cdse-quantum-dots-hybrid-heterostructures-001861nas a2200181 4500008004100000022001400041245013300055210006900188260009000257300000900347490000600356520108400362100002901446700002401475700003001499700002501529856012501554 2014 eng d a2045-232200aC@SiNW/TiO2 core-shell nanoarrays with sandwiched carbon passivation layer as high efficiency photoelectrode for water splitting0 aCSiNWTiO2 coreshell nanoarrays with sandwiched carbon passivatio aMACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLANDbNATURE PUBLISHING GROUPcMAY a48970 v43 a

One-dimensional heterostructure nanoarrays are efficiently promising as high performance electrodes for photo electrochemical (PEC) water splitting applications, wherein it is highly desirable for the electrode to have a broad light absorption, efficient charge separation and redox properties as well as defect free surface with high area suitable for fast interfacial charge transfer. We present highly active and unique photoelectrode for solar H-2 production, consisting of silicon nanowires (SiNWs)/TiO2 core-shell structures. SiNWs are passivated to reduce defect sites and protected against oxidation in air or water by forming very thin carbon layer sandwiched between SiNW and TiO2 surfaces. This carbon layer decreases recombination rates and also enhances the interfacial charge transfer between the silicon and TiO2. A systematic investigation of the role of SiNW length and TiO2 thickness on photocurrent reveals enhanced photocurrent density up to 5.97 mA/cm(2) at 1.0 V vs. NHE by using C@SiNW/TiO2 nanoarrays with photo electrochemical efficiency of 1.17%.

1 aDevarapalli, Rami, Reddy1 aDebgupta, Joyashish1 aPillai, Vijayamohanan, K.1 aShelke, Manjusha, V. uhttps://library.ncl.res.in/content/csinwtio2-core-shell-nanoarrays-sandwiched-carbon-passivation-layer-high-efficiency-002100nas a2200301 4500008004100000022001400041245012500055210006900180260009500249300001200344490000800356520102200364653003201386653001901418653002601437653000901463653000901472653001801481653003301499100001701532700001901549700002101568700002401589700001801613700001501631700002101646856013101667 2014 eng d a0021-979700aEffect of self-assembly on triiodide diffusion in water based polymer gel electrolytes: an application in dye solar cell0 aEffect of selfassembly on triiodide diffusion in water based pol a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcJUL a110-1170 v4253 a

The preparation of ordered polymer gels from the amphiphilic block copolymers, Pluronic (R) F77, P123 and polyethylene glycol in the presence of ionic liquid, iodine and organic additives is presented. At 35%(w/w) concentration these copolymers (F77 and P123) self-assembled into cubic liquid crystalline phase in aqueous solution and characterized by using SAXS and AFM measurements. The effects of micellar aggregation formed by polymers on the ionic transport and triiodide diffusion have been studied by electro-chemistry and SANS experiments. The ionic migration or triiodide diffusion through these polymer gels is found to be affected by the PEO/PPO content in the polymer backbone. These gels were successfully employed as an electrolyte in a dye sensitized solar cell. A remarkable solar to electricity conversion efficiency and good stability was obtained using Pluronic (R) F77 based gel, which is attributed to its thermoreversible sol to gel transition. (C) 2014 Elsevier Inc. All rights reserved.

10aAmphiphilic block copolymer10aDye solar cell10aMicellar nanochannels10aSANS10aSAXS10aSelf-assembly10aWater based gel electrolytes1 aSoni, S., S.1 aFadadu, K., B.1 aVekariya, R., L.1 aDebgupta, Joyashish1 aPatel, K., D.1 aGibaud, A.1 aAswal, Vinod, K. uhttps://library.ncl.res.in/content/effect-self-assembly-triiodide-diffusion-water-based-polymer-gel-electrolytes-application-002008nas a2200193 4500008004100000022001400041245013500055210006900190260011000259300001400369490000600383520117100389100002401560700002901584700002201613700002501635700003001660856012401690 2014 eng d a2040-336400aElectrochemical preparation of vertically aligned, hollow CdSe nanotubes and their p-n junction hybrids with electrodeposited Cu2O0 aElectrochemical preparation of vertically aligned hollow CdSe na aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcAUG a9148-91560 v63 a

Vertically aligned, hollow nanotubes of CdSe are grown on fluorine doped tin oxide (FTO) coated glass substrates by ZnO nanowire template-assisted electrodeposition technique, followed by selective removal of the ZnO core using NH4OH. A detailed mechanism of nucleation and anisotropic growth kinetics of nanotubes have been studied by a combination of characterization tools such as chronoamperometry, SEM and TEM. Interestingly, ``as grown'' CdSe nanotubes (CdSe NTs) on FTO coated glass plates behave as n-type semiconductors exhibiting an excellent photo-response (with a generated photocurrent density value of similar to 470 mu A cm(-2)) white in contact with p-type Cu2O (p-type semiconductor, grown separately on FTO plates) because of the formation of a n-p heterojunction (type II). The observed photoresponse is 3 times higher than that of a similar device prepared with electrodeposited CdSe films (not nanotubes) and Cu2P on FTO. This has been attributed to the hollow 1-D nature of CdSe NTs, which provides enhanced inner and outer surface areas for better absorption of light and also assists faster transport of photogenerated charge carriers.

1 aDebgupta, Joyashish1 aDevarapalli, Rami, Reddy1 aRahman, Shakeelur1 aShelke, Manjusha, V.1 aPillai, Vijayamohanan, K. uhttps://library.ncl.res.in/content/electrochemical-preparation-vertically-aligned-hollow-cdse-nanotubes-and-their-p-n-001618nas a2200205 4500008004100000022001400041245010700055210006900162260007100231300001600302490000800318520083300326100002101159700002401180700002201204700002201226700002201248700002001270856012201290 2014 eng d a0002-786300aHomogeneous photochemical water oxidation by biuret-modified Fe-TAML: evidence of Fe-V(O) intermediate0 aHomogeneous photochemical water oxidation by biuretmodified FeTA a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcSEP a12273-122820 v1363 a

{Water splitting, leading to hydrogen and oxygen in a process that mimics natural photosynthesis, is extremely important for devising a sustainable solar energy conversion system. Development of earth-abundant, transition metal-based catalysts that mimic the oxygen-evolving complex of photosystem II, which is involved in oxidation of water to O-2 during natural photosynthesis, represents a major challenge. Further, understanding the exact mechanism, including elucidation of the role of active metal-oxo intermediates during water oxidation (WO), is critical to the development of more efficient catalysts. Herein, we report Fe-III complexes of biuret-modified tetra-amidomacrocyclic ligands (Fe-TAML; 1a and 1b) that catalyze fast, homogeneous, photochemical WO to give OD with moderate efficiency (maximum TON = 220

1 aPanda, Chakadola1 aDebgupta, Joyashish1 aDiaz, David, Diaz1 aSingh, Kundan, K.1 aGupta, Sayam, Sen1 aDhar, Basab, B. uhttps://library.ncl.res.in/content/homogeneous-photochemical-water-oxidation-biuret-modified-fe-taml-evidence-fe-vo-002226nas a2200205 4500008004100000022001400041245010300055210006900158260011000227300001600337490000600353520140600359100002401765700002201789700001801811700002001829700001901849700002601868856012601894 2014 eng d a2046-206900aPhotophysical and photoconductivity properties of thiol-functionalized graphene-CdSe QD composites0 aPhotophysical and photoconductivity properties of thiolfunctiona aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a13788-137950 v43 a

Graphene-semiconductor QD hybrid nanostructure materials have recently emerged as a new class of functional materials because of their potential applications in solar energy conversion, optoelectronic devices, sensing etc. Here, oleic acid-capped CdSe QDs are attached to -PhSH functionalized graphene by ligand exchange via bonding with the -SH group. The shifting of the G-band and D-band due to structural changes for the attachment of QD with graphene has been evaluated by using Raman spectroscopy. Steady state photoluminescence (PL) and time resolved fluorescence measurements have been employed to understand the electronic interactions between graphene and CdSe QDs. A time resolved fluorescence spectroscopic study has been used to understand the fluorescence dynamics of the photoexcitated CdSe QDs in the presence of graphene. It is evident that the electron transfer occurs from photoexcited QDs to graphene and the electron transfer rate is found to be 12.8 x 10(8) s(-1) for 3.8 nm CdSe QDs. Photoconductivity properties of the graphene-QD device under illumination have been examined and it is to be noted that 2-3 fold increase in the photocurrent is found in this composite device in presence of 1.5 AM solar simulated light. The enhancement of the photocurrent in this hybrid device is found to be suitable for potential applications in optoelectronic and solar cell systems.

1 aDebgupta, Joyashish1 aMandal, Sadananda1 aKalita, Hemen1 aAslam, Mohammed1 aPatra, Amitava1 aPillai, Vijayamohanan uhttps://library.ncl.res.in/content/photophysical-and-photoconductivity-properties-thiol-functionalized-graphene-cdse-qd-000694nas a2200169 4500008004100000022001400041245009600055210006900151260005700220300001200277490000600289100002400295700002400319700003000343700002500373856012600398 2015 eng d a1868-252900aCo3O4 nanorods-efficient non-noble metal electrocatalyst for oxygen evolution at neutral pH0 aCo3O4 nanorodsefficient nonnoble metal electrocatalyst for oxyge a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcJUL a331-3400 v61 aRamsundar, Rani, M.1 aDebgupta, Joyashish1 aPillai, Vijayamohanan, K.1 aJoy, Pattayil, Alias uhttps://library.ncl.res.in/content/co3o4-nanorods-efficient-non-noble-metal-electrocatalyst-oxygen-evolution-neutral-ph-003043nas a2200229 4500008004100000022001400041245016600055210006900221260011000290300001400400490000600414520208700420100002302507700003102530700002402561700001702585700001602602700002402618700002602642700002202668856012302690 2016 eng d a2046-206900aComparative study of dG affinity vs. DNA methylation modulating properties of side chain derivatives of procainamide: insight into its DNA hypomethylating effect0 aComparative study of dG affinity vs DNA methylation modulating p aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a5350-53580 v63 a

Procainamide derivatives have been synthesized to investigate the role of side chains in modulating the DNA methylation level in cancer cells and gain insight into its mechanism of action. The synthesized derivatives comprised of flexible (dimethyl), constrained (pyrrolidine, piperidine, morpholine) and planar aromatic (pyridine, phenyl) side chain motifs. The affinity of procainamide and its derivatives towards the deoxyguanosine (dG) base in neutral form has been assessed by performing Differential Pulse Voltammetry (DPV) under physiological conditions. Further, molecular docking with hemimethylated CpG rich DNA acquired from an active mDNMT-1-DNA (PDB ID-4DA4) crystal structure, reveals their preferential non-covalent interaction with dG nucleobase in the intercalation cavity of the minor groove. Differential affinity of the derivatives to dG base in neutral and bound forms (DNA) is correlated with their DNA methylation modulating properties at sub-lethal concentrations. Among all the derivatives, a compound with an aromatic phenyl side chain (1) has shown a highest binding affinity for dG nucleobase in neutral form as well as for partially denatured CpG rich DNA which is attributed to the formation of p/p stacking interaction in addition to N-H/O hydrogen bonding with the pyrimidine ring of dG base. It also shows the highest cytotoxicity and global hypomethylation at a sub-lethal level in the MCF-7 cancer cell line compared to other derivatives and procainamide. A docking study has also illustrated the plausible structural basis of DNA methylation modulating a property of procainamide. Strong association of procainamide with dG bases of partially denatured CpG rich DNA via H-bonding and other non-covalent interactions may alter the active topology of DNA required by the DNA-binding regulatory proteins (e. g. DNMT-1) which is validated by a DNMT-1 inhibition assay. This systematic investigation leads to a new potent alternative to procainamide being found and gives a plausible insight into the DNA hypomethylating effect of procainamide.

1 aGawade, Rupesh, L.1 aChakravarty, Debamitra, K.1 aDebgupta, Joyashish1 aSangtani, E.1 aNarwade, S.1 aGonnade, Rajesh, G.1 aPuranik, Vedavati, G.1 aDeobagkar, D., D. uhttps://library.ncl.res.in/content/comparative-study-dg-affinity-vs-dna-methylation-modulating-properties-side-chain-001727nas a2200265 4500008004100000022001400041245011900055210006900174260007500243300001400318490000700332520076500339653001001104653001101114653002101125653001801146653001301164100002201177700002901199700002401228700003001252700002501282700002501307856012901332 2016 eng d a0947-653900aFacile green synthesis of BCN nanosheets as high-performance electrode material for electrochemical energy storage0 aFacile green synthesis of BCN nanosheets as highperformance elec aPOSTFACH 101161, 69451 WEINHEIM, GERMANYbWILEY-V C H VERLAG GMBHcMAY a7134-71400 v223 a

Two-dimensional hexagonal boron carbon nitride (BCN) nanosheets (NSs) were synthesized by new approach in which a mixture of glucose and an adduct of boric acid (H3BO3) and urea (NH2CONH2) is heated at 900 degrees C. The method is green, scalable and gives a high yield of BCN NSs with average size of about 1 mm and thickness of about 13 nm. Structural characterization of the as-synthesized material was carried out by several techniques, and its energy-storage properties were evaluated electrochemically. The material showed excellent capacitive behaviour with a specific capacitance as high as 244 F g(-1) at a current density of 1 A g(-1). The material retains up to 96% of its initial capacity after 3000 cycles at a current density of 5 A g(-1).

10aboron10aDoping10aElectrochemistry10aNanoparticles10anitrides1 aKarbhal, Indrapal1 aDevarapalli, Rami, Reddy1 aDebgupta, Joyashish1 aPillai, Vijayamohanan, K.1 aAjayan, Pulickel, M.1 aShelke, Manjusha, V. uhttps://library.ncl.res.in/content/facile-green-synthesis-bcn-nanosheets-high-performance-electrode-material-electrochemical01746nas a2200241 4500008004100000022001400041245011100055210006900166260007300235300001200308490000800320520081500328653002201143653002701165653001901192653003801211100003101249700002901280700001601309700002401325700002501349856013001374 2016 eng d a0378-775300aSynthesis of novel Cu2S nanohusks as high performance counter electrode for CdS/CdSe sensitized solar cell0 aSynthesis of novel Cu2S nanohusks as high performance counter el aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY a277-2830 v3153 a

An important component of quantum dot sensitized solar cells (QDSSC) is the counter electrode which mediates the regeneration of oxidized quantum dots by reducing the polysulphide electrolyte. However, design and synthesis of an efficient counter electrode material is a challenging task. Herein, we report the synthesis of a unique Cu2S nanohusks directly on FTO coated glass substrates by electrodeposition and used as a counter electrode in QDSSC. When these electrodes are used for the reduction of polysulfide electrolyte in QDSSC, they exhibit higher catalytic activity and photovoltaic performance as compared to the Platinum counter electrode. The power conversion efficiency of about 4.68% has been achieved by optimizing the deposition time of Cu2S. (C) 2016 Elsevier B.V. All rights reserved.

10acounter electrode10aCu2S electrodeposition10aCu2S nanohusks10aQuantum dot-sensitized solar cell1 aKamaja, Chaitanya, Krishna1 aDevarapalli, Rami, Reddy1 aDave, Yasha1 aDebgupta, Joyashish1 aShelke, Manjusha, V. uhttps://library.ncl.res.in/content/synthesis-novel-cu2s-nanohusks-high-performance-counter-electrode-cdscdse-sensitized-solar01719nas a2200181 4500008004100000022001400041245011200055210006900167260000800236300001400244490000700258520105400265100002001319700002401339700002401363700001901387856013101406 2017 eng d a0947-653900aElectrochemical water oxidation catalyzed by an in situ generated alpha-Co(OH)(2) film on zeolite-Y surface0 aElectrochemical water oxidation catalyzed by an in situ generate cJUN a8051-80570 v233 aThe design and synthesis of an efficient and robust water-oxidation catalyst with inexpensive materials remains an important challenge in the context of artificial photosynthesis. Herein, a simple but unique technique is reported to in situ generate a thin-film of alpha-Co(OH)(2) on the surface of zeolite-Y [hereafter referred to as Y-alpha-Co(OH)(2)] that acts as an efficient and stable catalyst for electrochemical water oxidation in alkaline medium. Catalyst Y-alpha-Co(OH)(2) is so stable that it retains its catalytic activity even after 2000 cyclic voltammetric cycles of water oxidation. Expectedly, the chemical composition of alpha-Co(OH)(2) on the surface of zeolite-Y remains same as that of parent Y-alpha-Co(OH)(2) after 2000 electrocatalytic cycles. A Tafel slope as low as 59 mV decade(-1) in 0.1m KOH (pH 13) suggests faster oxygen evolution kinetics (overpotential = 329 mV; turnover frequency = 0.35 mol O-2 (mol Co)(-1)s(-1) at 1 mA cm(-2)) than the existing alpha-Co(OH)(2)-based electrocatalysts operating in alkaline medium.1 aBose, Suranjana1 aDebgupta, Joyashish1 aRamsundar, Rani, M.1 aDas, Samar, K. uhttps://library.ncl.res.in/content/electrochemical-water-oxidation-catalyzed-situ-generated-alpha-cooh2-film-zeolite-y-surface