01869nas a2200289   4500008004100000022001400041245009900055210006900154260007100223300001600294490000600310520085500316653001901171653002401190653002401214653001201238653002201250653003401272653001801306100002001324700002301344700001601367700002101383700002201404700002501426856012801451       2015                        eng d  a1944-824400aNiS1.97: a new efficient water oxidation catalyst for photoelectrochemical hydrogen generation0 aNiS197 a new efficient water oxidation catalyst for photoelectro  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcSEP  a20053-200600 v73 a<p>NiS1.97, a sulfur-deficient dichalcogenide, in nanoscale form, is shown to be a unique and efficient photoelectrochemical (PEC) catalyst for H-2 generation by water splitting. Phase pure NiS1.97 nanomaterial is obtained by converting nickel oxide into sulfide by controlled sulfurization method, which is otherwise difficult to establish. The defect states (sulfur vacancies) in this material increase the carrier density and in turn lead to favorable band line-up with respect to redox potential of water, rendering it to be an effective photoelectrochemical catalyst. The material exhibits a remarkable PEC performance of 1.25 mA/cm(2) vs NHE at 0.68 V in neutral pH, which is almost 1000 times superior as compared with that of the stoichiometric phase of NiS2. The latter is well-known to be a cocatalyst but not as a primary PEC catalyst.</p>10adichlacogenide10aFaradaic efficiency10aHydrogen generation10aNiS1.9710anonstoichiometric10aphotoelectrochemical catalyst10asulfurization1 aBhosale, Reshma1 aKelkar, Sarika, A.1 aParte, Golu1 aFernandes, Rohan1 aKothari, Dushyant1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/nis197-new-efficient-water-oxidation-catalyst-photoelectrochemical-hydrogen-generation-001849nas a2200313   4500008004100000022001400041245012200055210006900177260007100246300001200317490000600329520075600335653002901091653003501120653001901155653001701174653001501191653001501206653001701221100002001238700002101258700001901279700002101298700002201319700001901341700002301360700002501383856012701408       2016                        eng d  a1944-824400aHybrid perovskite quantum nanostructures synthesized by electrospray antisolvent-solvent extraction and intercalation0 aHybrid perovskite quantum nanostructures synthesized by electros  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN  a854-8610 v83 a<p>Perovskites based on organometal lead halides have attracted great deal of scientific attention recently in the context of solar cells and optoelectronic devices due to their unique and tunable electronic and optical properties. Herein, we show that the use of electrospray technique in conjunction with the antisolventsolvent extraction leads to novel low-dimensional quantum structures (especially 2-D nanosheets) of CH3NH3PbI3- and CH3NH3PbBr3-based layered perovskites with unusual luminescence properties. We also show that the optical bandgaps and emission characteristics of these colloidal nanomaterials can be tuned over a broad range of visible spectral region by compositional tailoring of mixed-halide (I- and Br-based) perovskites.</p>10a2D nanostructure systems10aantisolvent-solvent extraction10abandgap tuning10aelectrospray10ananosheets10aperovskite10aquantum dots1 aNaphade, Rounak1 aNagane, Satyawan1 aShanker, Shiva1 aFernandes, Rohan1 aKothari, Dushyant1 aZhou, Yuanyuan1 aPadture, Nitin, P.1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/hybrid-perovskite-quantum-nanostructures-synthesized-electrospray-antisolvent-solvent-001516nas a2200193   4500008004100000245011400041210006900155260000800224300001200232490000800244520081900252100002001071700001801091700002101109700002201130700002201152700002501174856012301199       2016                        eng d00aMinute-made activated porous carbon from agro-waste for Li-ion battery anode using a low power microwave oven0 aMinutemade activated porous carbon from agrowaste for Liion batt  cSEP  a535-5440 v2123 aWe demonstrate a very simple, cost-effective and superfast process for making Li-ion battery (LIB) anode grade carbon from agro-waste in the form of sugarcane bagasse using a low power microwave system. Activation of this bagasse derived carbon is carefully optimized by using various weight ratios of KOH to obtain the desired properties of functional carbon in terms of porosity and electrical conductivity. Low equivalent series resistance (ESR), low charge transfer resistance with good electrical conductivity, and optimum porosity for efficient ion diffusion make this carbon a good candidate for Li-ion battery anode material rendering a reversible capacity of 757 mAhg (1) at a current density of 100 mAg (1) and a good cycling performance at high current rates. (C) 2016 Elsevier Ltd. All rights reserved.1 aAgarkar, Shruti1 aYadav, Poonam1 aFernandes, Rohan1 aKothari, Dushyant1 aSuryawanshi, Anil1 aOgale, Satishchandra  uhttps://library.ncl.res.in/content/minute-made-activated-porous-carbon-agro-waste-li-ion-battery-anode-using-low-power01415nas a2200193   4500008004100000245008900041210006900130260000800199300001400207490000600221520074600227100001800973700001700991700002101008700002201029700002101051700002901072856012001101       2017                        eng d00aHexaphosphate-derived phosphorus-functionalized carbon for lithium-ion battery anode0 aHexaphosphatederived phosphorusfunctionalized carbon for lithium  cJUL  a5600-56070 v23 a<p>We show that high-temperature annealing of a dried hexaphosphate, namely phytic acid, renders activated (micro-porous) and phosphorus-functionalized graphene like carbon in a one-step process. At high enough temperature few volatile phosphates serve as porogen-forming entities while other groups reactively functionalize the carbon surface. The optimized material has high effective surface area due to the presence of defect states. As an anode material for Li-ion battery, it exhibits a reversible capacity that is double that of the graphite and is stable for 1000 cycles even at a high current of 5 A g(-1). This result is attributed to the concurrent presence of micropores and phosphorus containing groups in the carbon matrix.</p>1 aGawli, Yogesh1 aWahid, Malik1 aFernandez, Rohan1 aKothari, Dushyant1 aShelke, Manjusha1 aOgale, Satishchandra, B.  uhttps://library.ncl.res.in/content/hexaphosphate-derived-phosphorus-functionalized-carbon-lithium-ion-battery-anode