One-Pot Synthesis of Bismuth Basic Nitrate-Bi_(2)MoO_(6) Photocatalyst for Selective Oxidation of Toluene  

作　　者：Tian-Qin Zeng Lang Chen Bing-Hao Wang Sheng Tian Zhang-Jun Bai Xiong Wang Jun-Kang Guo Shuang-Feng Yin 

机构地区：[1]Advanced Catalytic Engineering Research Center of the Ministry of Education,College of Chemistry and Chemical Engineering,State Key Laboratory of Chemo/Biosensing and Chemometrics,Hunan University,Changsha 410082,China [2]College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

出　　处：《Chinese Journal of Structural Chemistry》2022年第12期25-32,共8页结构化学（英文）

基　　金：National Natural Science Foundation of China(Nos.21975069,21725602,22108067,and 21938002);Innovative Research Groups of Hunan Province(No.2019JJ10001);Science and Technology Planning Project of Hunan Province(No.2019RS3010).

摘　　要：The key issues to improve the performance of photocatalysts for selective oxidation of toluene are promoting the migration and separation of charge carrier,and enhancing the generation of active oxygen species.It is known that the construction of compact heterojunction is an efficient protocol to inhibit photogenerated electron-hole recombination.In this work,a 2D-2D[Bi_(6)O_(6)(OH)_(3)](NO_(3))3·1.5H2O-Bi_(2)MoO_(6)(denoted as BBN-BMO)composite heterojunction has been prepared by one-step hydrothermal method for the first time.The tetragonal phase BBN in the composite plays the role of transferring electrons from the visible light activated orthorhombic phase BMO and promoting the generation of active·O_(2)^(-),the holes left in BMO are used to activate toluene and produce benzyl radical,thus greatly improving the photocatalytic performance for selective oxidation of toluene.The toluene conversion rate of BBN-BMO is 3466μmol·g^(-1)·h^(-1),which is three times that of pure BMO.The selectivity to benzalde-hyde is 94.2%.In addition,reasonable mechanism has been speculated based on a series of control experiments.

关 键 词：Bi_(2)MoO_(6) basic bismuth nitrate heterojunction photocatalysis selective oxidation of toluene 

分 类 号：TQ244.1[化学工程—有机化工] TQ426