Self-assembled synthesis of oxygen-doped g-C3N4 nanotubes in enhancement of visible-light photocatalytic hydrogen

查看全文 作　　者：Yizeng [1]Zhang;Zhiwu [1]Chen;Jinliang [2]Li;Zhenya [1]Lu;Xin [1]Wang

机构地区：[1]School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;[2]Siyuan Laboratory,Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials,Department of Physics,Jinan University,Guangzhou 510632,Guangdong,China

出　　处：《Journal of Energy Chemistry》索引2021年第30卷第3期,共9页

基　　金：financially supported by the Key-Area Research and Development Program of Guangdong Province(2019B010937001);the National Natural Science Foundation of China(50702022,51577070,51702056 and U1601208);Natural Science Foundation of Guangdong Province(2019A1515012129);Science and Technology Planning Project of Guangdong Province(2016B090932005)。 摘　　要：Currently,photocatalytic water splitting is regarded as promising technology in renewable energy generation.However,the conversion efficiency suffers great restriction due to the rapid recombination of charge carriers.Rational designed the structure and doping elements become important alternative routes to improve the performance of photocatalyst.In this work,we rational designed oxygen-doped graphitic carbon nitride(OCN)nanotubes derived from supermolecular intermediates for photocata lytic water splitting.The as prepared OCN nanotubes exhibit an outstanding hydrogen evolution rate of 73.84μmol h^(-1),outperforming the most of reported one dimensional(1D)g-C_(3)N_(4) previously.Due to the rational oxygen doping,the band structure of g-C_(3)N_(4) is meliorated,which can narrow the band gap and reduce the recombination rate of photogene rated carriers.Furthermore,the hollow nanotube structure of OCN also provide multiple diffuse reflection during photocata lytic reaction,which can significantly promote the utilization capacity of visible light and enhance the photocatalytic water splitting performance.It is believed that our work not only rationally controls the nanostructure,but also introduces useful heteroatom into the matrix of photocatalyst,which provides an effective way to design high-efficiency g-C_(3)N_(4) photocatalyst. 关键词：Graphitic carbon nitride Oxygen-doped NANOTUBE Photocatalytic water splitting Reaction process

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Self-assembled synthesis of oxygen-doped g-C3N4 nanotubes in enhancement of visible-light photocatalytic hydrogen

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