标题：A General Strategy to Fabricate NixP as Highly Efficient Cocatalyst via Photoreduction Deposition for Hydrogen Evolution
作者：Dong Y.; Kong L.; Jiang P.; Wang G.; Zhao N.; Zhang H.; Tang B.
作者机构：[Dong, Y] Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China;[ 更多
通讯作者地址：[Dong, Y] Key Laboratory of Synthetic and Biological Colloids, School of Chemical and Material Engineering, Jiangnan UniversityChina;
来源：ACS Sustainable Chemistry and Engineering
关键词：Hydrogen generation; Metal phosphide; Photocatalysis; Photochemical; Water splitting
摘要：Presently, precise deposition of transition metal phosphides at the electron outlet of photoactive materials as cocatalysts for hydrogen generation is rarely reported. Demonstrated here is a general photochemical strategy for the preparation of metal phosphides as cocatalysts for hydrogen generation. In this work, NixP was successfully deposited on g-C3N4 using nickel sulfate (NiSO4) and hypophosphite sodium (NaH2PO2) as Ni and P sources, respectively. The NixP/g-C3N4 composite exhibits excellent performance of hydrogen evolution via water splitting (about 8585 μmol g-1 h-1 in a triethanolamine aqueous solution under a 300 W Xe lamp with an AM 1.5G filter). More importantly, due to the intrinsic acid-resistant properties of NixP and g-C3N4, the NixP/g-C3N4 composite demonstrated excellent acid-stable photocatalytic activity for H2 evolution (stable run for 75 h under acidic solution of pH 2). Furthermore, the mechanism for photocatalytic activity of g-C3N4 enhanced by NixP was investigated in detail by steady-state photoluminescence spectra and surface photovoltage spectra, which indicated that separation efficiency of photogenerated carriers from g-C3N4 was effectively enhanced by NixP. © 2017 American Chemical Society.