典型文献
EPR study of charge separation associated states and reversibility of surface bound superoxide radicals in SrTiO3 photocatalyst
文献摘要：
Understanding the processes of charge generation,transfer and capture is important for the design and synthesis of efficient photocatalysts.In this work,light-induced charge separation and effect of O2 on electron transfer processes in SrTiO3 were investigated by electron paramagnetic resonance(EPR).It was found that photoinduced electron transfer from O2-to Ti4+produced Ti3+and O-redox radical pairs under vacuum condition.Under oxygen atmosphere,however,surface bound superoxide radicals O2-were formed by electron reduction of adsorbed oxygen at initial photoirradiation stage,and quenched by the reverse electron transfer to Ti4+upon further photoirradiation.Formation of long-lived charge sep-aration associated[Ti3+---O-]species and the reversibility of surface bound superoxide radicals mediat-ing the processes of photogenerated electrons may be accountable for the high activity of SrTiO3 in photocatalytic water splitting reaction.
文献关键词：
中图分类号：
作者姓名：
Xianwen Zhang;Zheng Li;Bin Zeng;Can Li;Hongxian Han
作者机构：
State Key Laboratory of Catalysis and Dalian National Laboratory for Clean Energy,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China;University of Chinese Academy of Sciences,Beijing 100049,China
文献出处：
引用格式：
[1]Xianwen Zhang;Zheng Li;Bin Zeng;Can Li;Hongxian Han-.EPR study of charge separation associated states and reversibility of surface bound superoxide radicals in SrTiO3 photocatalyst)[J].能源化学,2022(07):388-393
A类：
Ti4+produced,Ti3+and,Ti4+upon,mediat
B类：
EPR,study,charge,separation,associated,states,reversibility,surface,bound,superoxide,radicals,SrTiO3,Understanding,processes,generation,transfer,capture,important,design,synthesis,efficient,photocatalysts,In,this,work,light,effect,O2,were,investigated,by,paramagnetic,resonance,It,was,found,that,photoinduced,from,redox,pairs,under,vacuum,condition,oxygen,atmosphere,however,formed,reduction,adsorbed,initial,photoirradiation,stage,quenched,reverse,further,Formation,long,lived,species,photogenerated,electrons,may,accountable,high,activity,photocatalytic,water,splitting,reaction
AB值：
0.513326
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