Lower oxygen vacancy concentration in BiPO_(4)with unexpected higher photocatalytic activity

作     者：Jun Xiong Haoxue Huang Bo Lin Jiexiang Xia Jun Di Jun Xiong;Haoxue Huang;Bo Lin;Jiexiang Xia;Jun Di

作者机构：School of Chemistry and Chemical EngineeringInstitute for Energy ResearchJiangsu UniversityZhenjiang 212013China School of Chemistry and Chemical EngineeringNational Special Superfine Powder Engineering Research CenterNanjing University of Science and TechnologyNanjing 210094China School of Chemical Engineering and TechnologyXi'an Jiaotong UniversityXi'an 710049China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2023年第34卷第5期

页      面：369-373页

核心收录：

学科分类：07[理学] 081705[工学-工业催化] 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：financially supported by the National Natural Science Foundation of China(No.22002014) the Funding for scientific research startup of Jiangsu University(No.20JDG15) Fundamental Research Funds for the Central Universities(No.30922010302) Start-Up Grant(No.AE89991/397)from Nanjing University of Science and Technology。 

主　　题：BiPO_(4) Photocatalytic Oxygen vacancy Ciprofloxacin Energy band structure 

摘      要：Defect engineering has been demonstrated to be an appealing strategy to boost the photocatalytic activity of materials.However,can higher defect concentration bring about higher photocatalytic activity?This is an open question.In this work,BiPO_(4)photocatalysts with controllable oxygen vacancy concentrations were successfully synthesized.The photocatalytic activity of the obtained BiPO_(4)photocatalysts was determined by the removal of ciprofloxacin and 4-chlorophenol,as well as CO_(2)photoreduction.The BiPO4materials with lower oxygen vacancy concentration could display unexpected higher photocatalytic efficiency.Through the investigation of different factors which may affect the photocatalytic performance,such as crystal structure,morphology,specific surface area,defect,and energy band structure,it can be found that the energy band structure difference was responsible for the enhanced photocatalytic activity.