文献类型：期刊文献

英文题名：CoNi bimetallic alloy cocatalyst-modified g-C3Nk nanosheets for efficient photocatalytic hydrogen production

作者：Lu, Congrong[1,2];Wu, Enci[3];Li, Chunhe[1,2];Dou, Weidong[1,2];Lian, Yuan[4];Liang, Yulan[3];Xiang, Xiaoyan[3];Wang, Hongmei[3]

机构：[1]Shaoxing Univ, Lab Low Dimens Carbon Mat, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[3]Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China;[4]Jiaxing Univ, Coll Mat & Text Engn, Jiaxing 314001, Peoples R China

年份：2021

卷号：158

外文期刊名：JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS

收录：SCI-EXPANDED(收录号：WOS:000687199900006)、、WOS

基金：This work was financially supported by the Natural Science Foundation of Zhejiang Province, China (No. LQ21B030005, No. LY19F040005 and No. LGC20B050014), Jiaxing Public Welfare Projects (No. 2020AD10021). We appreciate the open project KLSMS-1904 (Support by Key Laboratory of Semiconductor Materials Science). We also appreciate the Key SRT funded projects of Jiaxing University.

语种：英文

外文关键词：g-C3Nk; CoNi alloy; Photocatalytic H-2 evolution

外文摘要：Non-precious and Earth-abundant cocatalysts have emerged as promising alternatives to precious metal catalysts for hydrogen generation from photocatalytic water splitting. In this work, CoNi/g-C3N4 photocatalyst composed of g-C3N4 nanosheets and CoNi alloyed nanoparticles was prepared by a simple solvothermal and chemical reduction method. Bimetallic CoNi alloy was found to accelerate charge transfer and inhibit electron and hole recombination, thereby enhancing the photocatalytic activity of CoNi/g-C3N4. Under optimal conditions, the hydrogen production rate of CoNi/g-C3N4 reached up to 354.4 mu mol h-1 g-1 with visible light (lambda > 420 nm) in triethanolamine aqueous solution; this value greatly exceeded that of g-C3N4 by a factor of 188 times. A mechanism explaining the excellent photocatalytic performance was proposed accordingly. These results suggest that g-C3N4-based photocatalysts have good potential for hydrogen generation.