Carbon dots-incorporated CuSeO_(3)rationally regulates activity and selectivity of the hydrogen species via light-converted electrons  

作　　者：Yuqi Ren Hongxu Zhang Caihong Hao Qing Chang Ning Li Jinlong Yang Shengliang Hu 

机构地区：[1]Research Group of New Energy Materials and Devices,North University of China,Taiyuan 030051,China [2]State Key Laboratory of New Ceramics and Fine Processing,Tsinghua University,Beijing 100084,China

出　　处：《Chinese Chemical Letters》2024年第1期332-337,共6页中国化学快报（英文版）

基　　金：Fundamental Research Program of Shanxi Province of China(No.20210302123037);Research Project Supported by Shanxi Scholarship Council of China(No.2022-136);Specialized Research Fund for Sanjin Scholars Program of Shanxi Province of China.

摘　　要：The chemoselective hydrogenation of structurally diverse nitroaromatics is a challenging process.Generally,catalyst activity tends to decrease when excellent selectivity is guaranteed.We here present a novel photocatalyst combining amino-functionalized carbon dots(N-CDs)with copper selenite nanoparticles(N-CDs@CuSeO_(3))for simultaneously improving selectivity and activity.Under visible light irradiation,the prepared N-CDs@CuSeO_(3)exhibits 100%catalytic selectivity for the formation of 4-aminostyrene at full conversion of 4-nitrostyrene in aqueous solvent within a few minutes.Such excellent photocatalytic performance is mainly attributed to the precise control of the hydrogen species released from the ammonia borane by means of light-converted electrons upon N-CDs@CuSeO_(3).Besides,the defect states at the interface of N-CDs and CuSeO_(3)enable holes to be trapped for promoting separation and transfer of photogenerated charges,allowing more hydrogen species to participate in catalytic reaction.

关 键 词：HETEROSTRUCTURE Carbon dots PHOTOCATALYSIS Chemoselective hydrogenation Copper selenite 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] TQ127.11[化学工程—无机化工]