典型文献
Design and in-situ construct BiOI/Bi/TiO2 photocatalysts with metal-mediated hetero structures employing oxygen vacancies in TiO2 nanosheets
文献摘要：
The conventional p-n heterojunction photocatalysts suffer from the incompatibility between the interfacial charge transfer efficiency and the redox ability of charge carriers.To optimize the interfacial charge transfer of the conventional BiOI/TiO2 p-n photocatalyst,we synthesized the BiOI/Bi/TiO2 ternary photocatalyst with sandwiched metallic bismuth(Bi0)by the oxygen-vacancy assisted method.The DFT calculation and structural characterizations confirmed the reaction of the electron-rich oxygen vacancies in the 2D-TiO2 nanosheets(TiO2-NS)with the adsorbed BiO+species.This reaction broke the Bi-O bonds to form Bi0 nanoparticles in-situ at the interface but still maintained the p-n heterojunction well.The NO-TPD and XRD analyses for samples correlated the Bi0 formation with the oxygen vacancy concentrations well.The sandwiched Bi0 functioned as an electronic transfer mediator like that in the Z-scheme heterostructure.Comparing with 0.20 BiOI/TiO2-NP(NP,Nano-particles),0.20 BiOI/Bi/Ti02-NS-a(NS,Nanosheet)showed a much improved catalytic performance,i.e.,duplicated apparent quantum yield(AQY)and triplicated reaction rate constant(k).Also,the formation mechanism and the reaction mechanism were investigated in detail.This work provides a new strategy for the improving of the conventional p-n photocatalysts and new insights into the nature of the photocatalysis.
文献关键词：
中图分类号：
作者姓名：
Chenchen Zhang;Wenbin Chen;Dairong Hu;Hanjie Xie;Yibing Song;Binbin Luo;Yiwen Fang;Wenhua Gao;Ziyi Zhong
作者机构：
Department of Chemistry,Shantou University,Guangdong,515063,China;Department of Chemical Engineering,Guangdong Technion-Israel Institute of Technology(GTIIT),Guangdong,515063,China;Technion-Israel Institute of Technology(IIT),Haifa,32000,Israel
文献出处：
引用格式：
[1]Chenchen Zhang;Wenbin Chen;Dairong Hu;Hanjie Xie;Yibing Song;Binbin Luo;Yiwen Fang;Wenhua Gao;Ziyi Zhong-.Design and in-situ construct BiOI/Bi/TiO2 photocatalysts with metal-mediated hetero structures employing oxygen vacancies in TiO2 nanosheets)[J].绿色能源与环境（英文）,2022(04):680-690
A类：
BiO+species,triplicated
B类：
Design,situ,construct,BiOI,TiO2,photocatalysts,mediated,structures,employing,oxygen,vacancies,nanosheets,conventional,heterojunction,suffer,from,incompatibility,between,interfacial,charge,transfer,efficiency,redox,ability,carriers,To,optimize,synthesized,ternary,sandwiched,metallic,bismuth,Bi0,by,vacancy,assisted,method,DFT,calculation,structural,characterizations,confirmed,reaction,rich,2D,NS,adsorbed,This,broke,bonds,nanoparticles,interface,but,still,maintained,well,TPD,analyses,samples,correlated,formation,concentrations,functioned,electronic,mediator,like,that,scheme,heterostructure,Comparing,NP,Ti02,Nanosheet,showed,much,improved,catalytic,performance,duplicated,apparent,quantum,yield,AQY,constant,Also,mechanism,were,investigated,detail,work,provides,new,strategy,improving,insights,into,nature,photocatalysis
AB值：
0.535341
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