典型文献
Light-induced halogen defects as dynamic active sites for CO2 photoreduction to CO with 100％selectivity
文献摘要：
Dynamic defects on halide perovskite materials,caused by ion dissociation and migration under light illumination,typically result in undesirable energy dissipation and limited energy conversion efficiency.However,in this work,we demonstrated that dynamic halogen defects generated by the same process in bismuth oxyhalide(Bi5O7Cl)materials can act as active sites to promote charge separation and photocat-alytic efficiency.Mechanistic studies and density functional theory calculations revealed that dynamic Cl defects affected the electronic structure of Bi5O7Cl and photocatalytic CO2 reduction process.As active sites,these defects promoted charge transfer,leading to the activation of adsorbed CO2 molecules and reduction of the energy barrier of the rate-determining step.Thus,CO2 was spontaneously converted into COOH-intermediate and finally reduced to CO with a high efficiency of 108.60 μmol g-1 and selectivity of 100％after 4-h of CO2 photoreduction.This work is highly instructive and valuable to the exploration of dynamic defects on halide-containing materials applied in solar energy conversion.
文献关键词：
中图分类号：
作者姓名：
Xian Shi;Xing'an Dong;Ye He;Ping Yan;Fan Dong
作者机构：
Research Center for Environmental and Energy Catalysis,Institute of Fundamental and Frontier Sciences,University of Electronic Science and Technology of China,Chengdu 611731,China;College of Architecture and Environment,Sichuan University,Chengdu 610065,China;Yangtze Delta Region Institute(Huzhou),University of Electronic Science and Technology of China,Huzhou 313001,China
文献出处：
引用格式：
[1]Xian Shi;Xing'an Dong;Ye He;Ping Yan;Fan Dong-.Light-induced halogen defects as dynamic active sites for CO2 photoreduction to CO with 100％selectivity)[J].科学通报（英文版）,2022(11):1137-1144
A类：
oxyhalide,Bi5O7Cl
B类：
Light,induced,halogen,defects,dynamic,active,sites,photoreduction,selectivity,Dynamic,perovskite,materials,caused,by,dissociation,migration,under,light,illumination,typically,result,undesirable,energy,dissipation,limited,conversion,efficiency,However,this,work,demonstrated,that,generated,same,process,bismuth,can,charge,separation,Mechanistic,studies,density,functional,theory,calculations,revealed,affected,electronic,structure,photocatalytic,these,promoted,transfer,leading,activation,adsorbed,molecules,barrier,determining,step,Thus,was,spontaneously,converted,into,COOH,intermediate,finally,reduced,after,This,highly,instructive,valuable,exploration,containing,applied,solar
AB值：
0.529279
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