Unique synergistic effects of ZIF-9（Co）-derived cobalt phosphide and CeVO4 heterojunction for efficient hydrogen evolution

作     者：Lijun Zhang Xuqiang Hao Junke Li Yuanpeng Wang Zhiliang Jin 张利君;郝旭强;李俊柯;汪远鹏;靳治良

作者机构：School of Chemistry and Chemical EngineeringNorth Minzu UniversityYinchuan 750021NingxiaChina Key Laboratory for Chemical Engineering and TechnologyState Ethnic Affairs CommissionNorth Minzu UniversityYinchuan 750021NingxiaChina Ningxia Key Laboratory of Solar Chemical Conversion TechnologyNorth Minzu UniversityYinchuan 750021NingxiaChina 

基　　金：financially supported by the National Natural Science Foundation of China(21862002,41663012) the Graduate Innovation Project of the North Minzu University(YCX19113) the new technology and system for clean energy catalytic production,Major scientific project of North Minzu University(ZDZX201803) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第1期

页      码：82-94页

摘      要：The photocatalytic decomposition of water to produce hydrogen is an important process,through which solar energy can be converted to chemical ***-precious metal phosphides have quietly attracted attention as an emerging inexpensive *** this study,we reported that a CoP/CeVO4 hybrid photocatalyst exhibited high hydrogen evolution efficiency owing to EY(eosin Y)sensitization under visible light irradiation for the first time,and the amount of generated hydrogen reached 444.6μmol in 5 *** CoP/CeVO4 nanohybrids were synthesized by a simple chemical precipitation *** coupling of CoP and CeVO4 with ZIF-9 as a precursor could be completed in one *** CeVO4 particles were firmly attached to the surface of the CoP particles to form a"small point"to"big point"*** results of X-ray diffraction,X-ray photoelectron spectroscopy,scanning electron microscopy,EDX,and transmission electron microscopy showed the formation of CoP and CeVO4 nanoparticles and the structure of the *** on a detailed analysis of the Mott-Schottky plot,the UV-vis diffuse reflectance spectra,photocurrent-time(it)curve,Tafel curve,Nyquist curve(EIS),linear volt-ampere curve(LSV),and steady-state fluorescence spectra were *** time-resolved photoluminescence measurements indicated that the reason for the high-efficiency hydrogen evolution of CoP/CeVO4 was that the bands of CoP and CeVO4 were bent due to the existence of the Schottky barrier,and a heterojunction was formed between CoP and CeVO4,which generated an internal electric field and accelerated the charge *** addition,the synergistic effect between CoP and CeVO4 provided a new hydrogen-evolution activity center for each of *** improved carrier separation efficiency and the decrease in the photo-generated recombination rate led to the excellent photocatalytic hydrogen-evolution activity of the CoP/CeVO4 composite *** work provides a new strategy for modulating the el

主 题 词：Photocatalysis CoP CeVO4 Dye-sensitized Hydrogen production 

学科分类：081704[081704] 07[理学] 070304[070304] 08[工学] 0817[工学-轻工类] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(19)63454-6

馆 藏 号：203793640...