C–H activations of methanol and ethanol and C–C couplings into diols by zinc–indium–sulfide under visible light
作者:Haikun Zhang、Shunji Xie、Jinyuan Hu、Xuejiao Wu、Qinghong Zhang、Jun Cheng、Ye Wang
DOI:10.1039/c9cc09205f
日期:——
Use of few-layer Zn2In2S5 nanosheets as an environmentally friendly visible-light photocatalyst for directly transforming methanol to ethylene glycol with high selectivity.
将少层Zn2In2S5纳米片用作环境友好的可见光光催化剂,可直接将甲醇高选择性地转化为乙二醇。
Surface Chemistry in Cobalt Phosphide-Stabilized Lithium–Sulfur Batteries
作者:Yiren Zhong、Lichang Yin、Peng He、Wen Liu、Zishan Wu、Hailiang Wang
DOI:10.1021/jacs.7b11434
日期:2018.1.31
understood. We report a new and general lithium polysulfide-binding mechanism enabled by surface oxidation layers of transition-metalphosphide and chalcogenide materials. We for the first time find that CoP nanoparticles strongly adsorb polysulfides because their natural oxidation (forming Co-O-P-like species) activates the surface Co sites for binding polysulfides via strong Co-S bonding. With a surface
Cobaltphosphidethinfilms were grown by metal-organic chemical vapor deposition (MOCVD) in H 2 atmospheres on InP(001) substrates using bis(η-methylcyclopentadienyl)Co(II)[Co(Cp Me ) 2 ] and phophine (PH 3 ) precursors at 550°C. Film microstructure, composition, and morphology were investigated in detail by X-ray diffraction, X-ray photoelectron spectroscopy (XPS), Rutherford backscattering (RBS)
Ligand influence on the formation of P/Se semiconductor materials from metal–organic complexes
作者:Arunkumar Panneerselvam、Chinh Q. Nguyen、John Waters、Mohammad A. Malik、Paul O'Brien、James Raftery、Madeleine Helliwell
DOI:10.1039/b802012d
日期:——
The complexes [Ni(SePiPr2)2N}2] (1), [Ni(Se2PiPr2)2] (2), and [Co(Se2PiPr2)2] (4) were synthesised and the X-ray single crystal structures of (1) and (2) were determined. Thin films of nickel selenide, cobalt selenide and cobalt phosphide have been deposited by the chemical vapour deposition method using imidodiselenophosphinato-nickel(II) (1), -cobalt(II) [Co(SePiPr2)2N}2] (3), diselenophosphinato-nickel(II) (2), -cobalt(II) (4) and diselenocarbamato-nickel(II) [Ni(Se2CNEt2)2] (5), and -cobalt(III) [Co(Se2CNEt2)3] (6) precursors.
MXene supported Co<sub>x</sub>A<sub>y</sub> (A = OH, P, Se) electrocatalysts for overall water splitting: unveiling the role of anions in intrinsic activity and stability
作者:N. Clament Sagaya Selvam、Jooyoung Lee、Gwan H. Choi、Min Jun Oh、Shiyu Xu、Byungkwon Lim、Pil J. Yoo
DOI:10.1039/c9ta10664b
日期:——
catalysts is a crucial task and an ongoing challenge for sustainable water electrolysis. In this work, large-size-exfoliated MXene sheets render a flat and flexible platform for the decoration of Co(OH)F, CoP and Co7Se8, allowing them to exhibit high electrocatalytic performances; thanks to the maximized surface area and conductivity. CoP/MXene shows enhanced oxygen evolution reaction (OER) activity, with
高效且稳定的双功能催化剂的性能优于贵金属催化剂,这是一项至关重要的任务,也是可持续水电解的一项持续挑战。在这项工作中,大尺寸剥离的MXene板为装饰Co(OH)F,CoP和Co 7 Se 8提供了一个平坦而灵活的平台,使其具有较高的电催化性能。得益于最大的表面积和电导率。CoP / MXene具有增强的放氧反应(OER)活性,与IrO 2相比,在10 mA cm -2时的过电势(η = 230 mV)明显更低(300 mV)。此外,与基准电极对IrO 2 / C // Pt /相比,混合双功能电极(CoP / MXene // CoP / MXene)表现出高度稳定和高效的总水分解性能(1.56 V @ 10 mA cm -2)。C(1.62 V @ 10 mA cm -2)在碱性溶液中。此外,我们阐明了在OER条件下杂化催化剂中阴离子组分(P和Se)的氧化过程,并验证了它们对活性和稳定性的显着影响。值得注意的是,CoP