02139nas a2200289   4500008004100000022001400041245016200055210006900217260000800286300001600294490000600310520116500316653001401481653003001495653001301525653001001538653002101548653001001569653003001579653001601609653001601625653000901641100002001650700002401670700002401694856013101718       2017                        eng d  a2040-336400aNiZn double hydroxide nanosheet-anchored nitrogen-doped graphene enriched with the gamma-NiOOH phase as an activity modulated water oxidation electrocatalyst0 aNiZn double hydroxide nanosheetanchored nitrogendoped graphene e  cSEP  a12590-126000 v93 a<p>Herein, we report a facile solvothermal process to synthesize an active electrocatalyst for the oxygen evolution reaction (OER) in an alkaline medium by anchoring nanosheets of a NiZn double hydroxide over nitrogen doped reduced graphene oxide after enriching the system with the γ-NiOOH phase. This catalyst possesses a thin, porous and open layered structure, which makes the system more efficient and accessible for a better electrochemical water oxidation reaction. Moreover, we experimentally demonstrated that incorporation of Zn via a single-step solvothermal method provides an easy approach to obtain plenty of exposed γ-NiOOH phases to make the system more viable for OER with a small overpotential of 290 mV at 10 mA cm−2 and a Tafel slope of 44 mV per decade. In addition to this, the oxophilic nature of Zn in the (Zn)Ni-LDH/N-rGO catalyst helps to improve the long-term stability of the whole system. The obtained results open up possibilities for the design of future robust OER electrocatalysts by the use of very cheap and abundant materials like Ni and Zn in place of expensive Ir and Ru in the present commercial electrocatalysts.</p>10acatalysis10aEfficient Electrocatalyst10akinetics10aMetal10aNickel-Hydroxide10aoxide10aOxygen Evolution Reaction10aperformance10aXPS Spectra10azinc1 aNadeema, Ayasha1 aDhavale, Vishal, M.1 aKurungot, Sreekumar  uhttps://library.ncl.res.in/content/nizn-double-hydroxide-nanosheet-anchored-nitrogen-doped-graphene-enriched-gamma-niooh-phase02165nas a2200241   4500008004100000022001400041245020700055210006900262260000800331300001100339490000700350520122600357653002701583653002501610653003301635653003701668653001601705100002301721700002201744700001601766700001501782856012601797       2020                        eng d  a2452-262700aControlled synthesis of two-dimensional (2-D) ultra-thin bismuth selenide (Bi2Se3) nanosheets by bottom-up solution-phase chemistry and its electrical transport properties for thermoelectric application0 aControlled synthesis of twodimensional 2D ultrathin bismuth sele  cMAY  a1001650 v213 a<p>Bismuth Selenide and associated compounds inheriting stacked layered structure represent a unique class of materials where bulks are insulating with conducting surfaces, best known as thermoelectric materials. The bottom-up solution-based approach is a convenient alternative producing ultrathin high quality two-dimensional Bi2Se3 nanosheets. The present investigation deals with glycol mediated synthesis of highly crystalline ultrathin Bi2Se3 nanosheets. The as-synthesized Bi2Se3 nanosheets exhibit a rhombohedral crystal structure with a substantial surface-to-volume ratio that can possess several potential applications. Besides, the ultrathin Bi2Se3 nanosheets produced herein, found to be n-type with robust spatial confinement of charge carriers advantageous for thermoelectric applications, delivering a high-power factor of 1.55 mu W/cmK(2) at 150 degrees C. The method demonstrates the generic feature of the solution phase technique for the synthesis of highly crystalline nanosheets allowing mass production of identical ultra-thin nanosheets that can be easily integrated into devices for several promising applications, including spintronics, energy storage, and topological quantum computation.</p>
10aRhombohedral structure10aSheet-like structure10aThermoelectric nanomaterials10atransmission electron microscopy10aXPS Spectra1 aBin Masood, Khalid1 aKumar, Pushpendra1 aGiri, Rajiv1 aSingh, Jai  uhttps://library.ncl.res.in/content/controlled-synthesis-two-dimensional-2-d-ultra-thin-bismuth-selenide-bi2se3-nanosheets