In situ fabrication of CdMoO4/g-C3N4 composites with improved charge separation and photocatalytic activity under visible light irradiation

作     者：Bo Chai Juntao Yan Guozhi Fan Guangsen Song Chunlei Wang 柴波;闫俊涛;范国枝;宋光森;王春蕾

作者机构：Hubei Key Laboratory of Animal Nutrition and Feed ScienceWuhan Polytechnic UniversityWuhan 430023HubeiChina School of Chemical and Environmental EngineeringWuhan Polytechnic UniversityWuhan 430023HubeiChina 

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      面：170-179页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：supported by the Open Project Program of Hubei Key Laboratory of Animal Nutrition and Feed Science,Wuhan Polytechnic University(No.201808) Hubei Important Project of Technological Innovation(2018ABA094)~~ 

主　　题：CdMoO4/g-C3N4 composite Heterojunction Charge separation Visible light Photocatalytic activity 

摘      要：To further improve the charge separation and photocatalytic activities of g-C3N4 and CdMoO4 under visible light irradiation,CdMoO4/g-C3N4 composites were rationally synthesized by a facile precipitation-calcination *** crystal phases,morphologies,chemical compositions,textural structures,and optical properties of the as-prepared composites were characterized by the corresponding analytical *** photocatalytic activities toward degradation of rhodamine B solution were evaluated under visible light *** results revealed that integrating CdMoO4 with g-C3N4 could remarkably improve the charge separation and photocatalytic activity,compared with those of pristine g-C3N4 and *** would be because the CdMoO4/g-C3N4 composites could facilitate the transfer and separation of the photoexcited electron-hole pairs,which was confirmed by electrochemical impedance spectroscopy,transient photocurrent responses,and photoluminescence ***,active species trapping experiments demonstrated that holes(h+)and superoxide radicals(?O2?)were the main active species during the photocatalytic reaction.A possible photocatalytic mechanism was proposed on the basis of the energy band structures determined by Mott-Schottky *** work would provide further insights into the rational fabrication of composites for organic contaminant removal.