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InP quantum dots on g-C_(3)N_(4) nanosheets to promote molecular oxygen activation under visible light

查看全文 作　　者：Yuehan [1,2]Cao;Qian [2]Zheng;Zhiqiang [2]Rao;Ruiyang [2]Zhang;Zhanghui [2]Xie;Shan [2]Yu;Ying [1,2]Zhou 高影响力作者 机构地区：[1]State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu 610500,China;[2]The Center of New Energy Materials and Technology,School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China高影响力机构 出　　处：《Chinese Chemical Letters》索引2020年第31卷第10期,共4页高影响力期刊 基　　金：the National Natural Science Foundation of China(No.U1862111);Sichuan Science andTechnology Program(No.2020ZDZX0008);Sichuan Provincial International Cooperation Project(No.2019YFH0164);International Collaboration Project of Chengdu City(No.2017-GH02-00014HZ);Graduate Scientific Research Innovation Foundation of SWPU(No.2019cxyb013);Cheung Kong Scholars Programme of China。 摘　　要：Largely limited by the high dissociation energy of the O—O bond,the photocatalytic molecular oxygen activation is highly challenged,which re strains the application of photocatalytic oxidation technology for atmospheric pollutants removal.Herein,we design and fabricate the InP QDs/g-C_(3)N_(4) compounds.The introduction of InP QDs promotes the charge transfer within the interface resulting in the effective separation of photo-generated carriers.Furthermore,InP QDs greatly facilitates the activation of molecular oxygen and promote the formation of O_(2)·under visible-light illuminatio n.These conclusions are identified by experimental and calculation results.Hence,NO can be combined with the O_(2)·to form O—O—N—O intermediate to direct conversion into NO_(3).As a result,the NO removal ratio of g-C_(3)N_(4) has a one fold increase after InP QDs loaded and the generation of NO_(2) is effectively inhibited.This wo rk may provide a strategy to design highly efficient materials for molecular oxygen activation. 关 键 词：InP quantum dots g-C_(3)N_(4)nanosheets Molecular oxygen activation O-O-N-O intermediate Photocatalytic NO removal
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