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...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.展开更多
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)+1 种基金Fundamental Research Funds for the Central Universities(No.30922010302)Start-Up Grant(No.AE89991/397)from Nanjing University of Science and Technology。
文摘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.
