文献类型：期刊文献

英文题名：Sub-5 nm Ultra-Fine FeP Nanodots as Efficient Co-Catalysts Modified Porous g-C3N4 for Precious-Metal-Free Photocatalytic Hydrogen Evolution under Visible Light

作者：Zeng, Deqian[1,2];Zhou, Ting[2];Ong, Wee Jun[3,4];Wu, Mingda[5];Duan, Xiaoguang[6];Xu, Wanjie[2];Chen, Yuanzhi[2];Zhu, Yi-An[7];Peng, Dong-Liang[2]

机构：[1]Guangxi Univ, Sch Resources Environm & Mat, Nanning 530004, Peoples R China;[2]Xiamen Univ, Coll Mat, Dept Mat Sci & Engn, Xiamen 361005, Peoples R China;[3]Xiamen Univ, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China;[4]Xiamen Univ Malaysia, Sch Energy & Chem Engn, Selangor Darul Ehsan 43900, Malaysia;[5]Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore;[6]Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia;[7]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：11

期号：6

起止页码：5651

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20190306371221);WOS:【SCI-EXPANDED(收录号:WOS:000459221900011)】；

基金：The authors acknowledge the financial support from the National Key R&D Program of China (grant no. 2016YFA0202602). D.Z. acknowledges support from Guangxi University and Guangxi Key Laboratory of Processing for Nonferrous Metallic and Featured Materials. W.-J.O. acknowledges financial assistance and faculty start-up grants and supports from Xiamen University. W.-J.O. would also like to thank Petronas, ExxonMobil and Shell Malaysia for granting him the '2018 Merdeka Award Grant'.

语种：英文

外文关键词：g-C3N4; transition-metal phosphides; co-catalysts; precious-metal-free; photocatalytic H-2 production

摘要：Sub-5 nm ultra-fine iron phosphide (FeP) nano-dots-modified porous graphitic carbon nitride (g-C3N4) heterojunction nanostructures are successfully prepared through the gas-phase phosphorization of Fe3O4/g-C3N4 nanocomposites. The incorporation of zero-dimensional (0D) ultra-small FeP nanodots co-catalysts not only effectively facilitate charge separation but also serve as reaction active sites for hydrogen (H-2) evolution. Herein, the strongly coupled FeP/g-C3N4 hybrid systems are employed as precious-metal-free photocatalysts for H-2 production under visible-light irradiation. The optimized FeP/g-C3N4 sample displays a maximum H-2 evolution rate of 177.9 mu mol h(-1) g(-1) with the apparent quantum yield of 1.57% at 420 nm. Furthermore, the mechanism of photocatalytic H-2 evolution using 0D/2D FeP/g-C3N4 heterojunction interfaces is systematically corroborated by steady-state photoluminescence (PL), time-resolved PL spectroscopy, and photoelectrochemical results. Additionally, an increased donor density in FeP/g-C3N4 is evidenced from the Mott-Schottky analysis in comparison with that of parent g-C3N4, signifying the enhancement of electrical conductivity and charge transport owing to the emerging role of FeP. The density functional theory calculations reveal that the FeP/g-C3N4 hybrids could act as a promising catalyst for the H-2 evolution reaction. Overall, this work not only paves a new path in the engineering of monodispersed FeP-decorated g-C3N4 0D/2D robust nanoarchitectures but also elucidates potential insights for the utilization of noble-metal-free FeP nanodots as remarkable co-catalysts for superior photocatalytic H-2 evolution.