01211nas a2200205 4500008004100000022001400041245013700055210006900192260011000261300001400371490000700385520034200392100002100734700002200755700002200777700002500799700003000824700002400854856012700878 2010 eng d a1359-734500aHigh aspect ratio nanoscale multifunctional materials derived from hollow carbon nanofiber by polymer insertion and metal decoration0 aHigh aspect ratio nanoscale multifunctional materials derived fr aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a5590-55920 v463 a

A novel high aspect ratio material which can simultaneously display multiple functions such as proton and electron conductivity and electrocatalytic activity has been developed by incorporating both platinum nanoparticles and phosphoric acid doped polybenzimidazole along the inner and outer surfaces of a hollow carbon nanofiber.

1 aBalan, Beena, K.1 aKale, Vinayak, S.1 aAher, Pradnya, P.1 aShelke, Manjusha, V.1 aPillai, Vijayamohanan, K.1 aKurungot, Sreekumar uhttps://library.ncl.res.in/content/high-aspect-ratio-nanoscale-multifunctional-materials-derived-hollow-carbon-nanofiber-001897nas a2200217 4500008004100000022001400041245012200055210006900177260011000246300001400356490000600370520100900376100002901385700002301414700002601437700002101463700002001484700002301504700002501527856012701552 2013 eng d a2050-752600aHigh efficiency electron field emission from protruded graphene oxide nanosheets supported on sharp silicon nanowires0 aHigh efficiency electron field emission from protruded graphene  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN a5040-50460 v13 a

Graphene oxide (GO) potentially has applications in vacuum microelectronic devices for realization of field emission displays. Graphene and its derivatives are expected to be efficient field emitters due to their unique electrical properties. However, the flat sheet structure of graphene or GO allows electron field emission only from the edges of graphene and GO nanosheets. In order to extract maximum field emission current density at lower applied voltage from the GO nanosheets, we supported and stretched them on sharp tips of silicon nanowires (SiNWs). Highly efficient and stable field emission with low turn-on field was observed for these SiNW-GO heterostructures. The sharp protrusions created by stretching of the GO nanosheets on SiNWs locally enhance the electric field and thus enhance the field emission characteristics. The dominant use of silicon in electronic devices makes this approach robust for the development of field emission devices using graphene based field emitters.

1 aDevarapalli, Rami, Reddy1 aKashid, Ranjit, V.1 aDeshmukh, Ashvini, B.1 aSharma, Ponchami1 aDas, Manash, R.1 aMore, Mahendra, A.1 aShelke, Manjusha, V. uhttps://library.ncl.res.in/content/high-efficiency-electron-field-emission-protruded-graphene-oxide-nanosheets-supported-001817nas a2200193 4500008004100000022001400041245013800055210006900193260000800262300001600270490000700286520107700293100002601370700002401396700002601420700002601446700002501472856012601497 2020 eng d a0022-246100aHighly durable Li-ion battery anode from Fe3O4 nanoparticles embedded in nitrogen-doped porous carbon with improved rate capabilities0 aHighly durable Liion battery anode from Fe3O4 nanoparticles embe cNOV a15667-156800 v553 a

For next generation, lithium-ion batteries (LIBs) developing high capacity anode materials are crucial with increasing demand of large-scale application. Conversion-type anode materials are promising if stable cycling behavior could be achieved. In this work, a nitrogen-doped porous carbon-Fe3O4(NPC-Fe3O4) nanocomposite is synthesized via a simple and scalable approach. Composite is prepared by pyrolysis of polymer silica hybrid PolyHIPE (high internal phase emulsion) into NPC, and Fe3O4 nanoparticles (NPs) are anchored on its surface via hydrothermal synthesis. As-prepared NPC-Fe3O4 nanocomposite delivers high reversible capacity of around 1001 mAhg(-1)at 0.1 Ag-1 current density and rate capabilities and displays excellent cycling stability as high as 95% capacity retention even after 400 cycles. Superior electrochemical performance of NPC-Fe3O4 is attributed to the hierarchical porous structure and nitrogen doping of carbon which shorten the diffusion path of Li+ and provide ample space to prevent aggregation of Fe3O nanoparticles. [GRAPHICS] .

1 aDeshmukh, Ashvini, B.1 aDwivedi, Pravin, K.1 aNalawade, Archana, C.1 aQureshi, Mohammed, S.1 aShelke, Manjusha, V. uhttps://library.ncl.res.in/content/highly-durable-li-ion-battery-anode-fe3o4-nanoparticles-embedded-nitrogen-doped-porous02023nas a2200241 4500008004100000022001400041245010800055210006900163260000800232300001100240490000800251520118700259653001601446653002101462653003001483653003301513653002001546100002401566700001601590700002301606700002501629856012701654 2021 eng d a0921-510700aHigh efficiency lithium storage in 3D composite foam of Co3O4 nanoparticles integrated carbon nanohorns0 aHigh efficiency lithium storage in 3D composite foam of Co3O4 na cJAN a1148390 v2633 a

A well-designed 3 dimensional (3D) nanocomposite foam of Co3O4 nanoparticles and functionalized carbon nano horns (CNH) is prepared by feasible wet chemistry followed by lyophilization. This 3D nanocomposite foam is evaluated electrochemically as anode material for lithium-ion battery (LIB). 3D hierarchical mesoporous hybrid of functionalized carbon nano horn-Co3O4 (CCO) shows excellent lithium storage properties with long cycle life due to high surface area, good conductivity, 3D interconnected mesoporous structure, mechanical and chemical stability and shortened diffusion path length for Li+ ions during lithiation-delithiation. The Co3O4 nanoparticles incorporated into interconnected CNH foam effectively increases the number of active sites of CCO nanocomposite and consequently increase in the reversible specific capacity and coulombic efficiency. Different compositions of CNH foam with Co3O4 nanoparticles are prepared, among which the CCO 1:1 foam displays reversible capacity of 797 mAhg1 at current density of 0.1 Ag-1 along with excellent rate performance. High specific capacity of around 702 mAhg(-1) is obtained even at the current density of 5 Ag-1.

10a3D CCO foam10acarbon nanohorns10aExcellent rate capability10aLi ion diffusion coefficient10aLong Cycle life1 aDwivedi, Pravin, K.1 aParte, Golu1 aThripuranthaka, M.1 aShelke, Manjusha, V. uhttps://library.ncl.res.in/content/high-efficiency-lithium-storage-3d-composite-foam-co3o4-nanoparticles-integrated-carbon02780nas a2200361 4500008004100000022001400041245016100055210006900216260000900285300001600294490000700310520160800317653001501925653001701940653002201957653001301979653001401992653001102006100002102017700002102038700002202059700002102081700002202102700002202124700001902146700002302165700002102188700001802209700002302227700002502250700002002275856012302295 2024 eng d a1944-824400aHexagonal boron nitride quantum dots embedded on layer-by-layer films for peroxidase-assisted colorimetric detection of β-galactosidase producing pathogens0 aHexagonal boron nitride quantum dots embedded on layerbylayer fi cMAY  a26870-268850 v163 a

Pathogen detection has become a major research area all over the world for water quality surveillance and microbial risk assessment. Therefore, designing simple and sensitive detection kits plays a key role in envisaging and evaluating the risk of disease outbreaks and providing quality healthcare settings. Herein, we have designed a facile and low-cost colorimetric sensing strategy for the selective and sensitive determination of beta-galactosidase producing pathogens. The hexagonal boron nitride quantum dots (h-BN QDs) were established as a nanozyme that showed prominent peroxidase-like activity, which catalyzes 3,3 `,5,5 `-tetramethylbenzidine (TMB) oxidation by H2O2. The h-BN QDs were embedded on a layer-by-layer assembled agarose biopolymer. The beta-galactosidase enzyme partially degrades beta-1,4 glycosidic bonds of agarose polymer, resulting in accessibility of h-BN QDs on the solid surface. This assay can be conveniently conducted and analyzed by monitoring the blue color formation due to TMB oxidation within 30 min. The nanocomposite was stable for more than 90 days and was showing TMB oxidation after incubating it with Escherichia coli (E. coli). The limit of detection was calculated to be 1.8 x 10(6) and 1.5 x 10(6) CFU/mL for E. coli and Klebsiella pneumonia (K. pneumonia), respectively. Furthermore, this novel sensing approach is an attractive platform that was successfully applied to detect E. coli in spiked water samples and other food products with good accuracy, indicating its practical applicability for the detection of pathogens in real samples.

10abiopolymer10acolorimetric10ah-BN quantum dots10ananozyme10apathogens10aSensor1 aMajumdar, Sristi1 aGogoi, Devipriya1 aBoruah, Purna, K.1 aThakur, Ashutosh1 aSarmah, Priyakhee1 aGogoi, Parishmita1 aSarkar, Sanjib1 aPachani, Priyakshi1 aManna, Prasenjit1 aSaikia, Ratul1 aChaturvedi, Vikash1 aShelke, Manjusha, V.1 aDas, Manash, R. uhttps://library.ncl.res.in/content/hexagonal-boron-nitride-quantum-dots-embedded-layer-layer-films-peroxidase-assisted