Engineering BiOBr_(x)I_(1-x)solid solutions with enhanced singlet oxygen production for photocatalytic benzylic C-H bond activation mediated by N-hydroxyl compounds  

作　　者：Yucui Bian Yongpan Gu Xiaofei Zhang Haijun Chen Zhongjun Li 

机构地区：[1]Green Catalysis Center,College of Chemistry,Zhengzhou University,Zhengzhou 450001,China

出　　处：《Chinese Chemical Letters》2021年第9期2837-2840,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.21671176);Post-doctoral Foundation of Henan。

摘　　要：The aerobic,selective oxidation of hydrocarbons via C-H bond activation is still a challenge.This work shows the achievement of the room temperature visible light driven photocatalytic activation of benzylic C-H bonds with N-hydroxysuccinimide over BiOBr_(x)I_(1-x)(0≤x≤1)solid solutions,whose valance bands were engineered through varying the ratio of bromide to iodide.The optimal BiOBr0.85I0.15 catalyst exhibited over 98%conversion ratio of ethylbenzene,which was about 3.9 and 8.9 times that of pure BiOBr and BiOI,respectively.The excellent photocatalytic activity of BiOBr0.85I0.15 solid solution can be ascribed to the orbital hybridization of the valence band containing both Br 4p and I 5p orbitals,which could promote photo-induced charge carrier separation and improve the generation of singlet oxygen.This work shed some light on the rational design of photocatalysts for targeted organic transformation.

关 键 词：BiOBr_(x)I_(1-x)solid solutions Ethylbenzene oxidation N-HYDROXYSUCCINIMIDE PHOTOCATALYSIS Singlet oxygen Province 

分 类 号：O621.251[理学—有机化学]