Molecular oxygen activation enhancement by BiOBr0.5I0.5/BiOI utilizing the synergistic effect of solid solution and heterojunctions for photocatalytic NO removal

作     者：Mingpu Kou Yu Deng Rumeng Zhang Li Wang Po Keung Wong Fengyun Su Liqun Ye 寇明璞;邓宇;张如梦;王丽;Po Keung Wong;苏凤云;叶立群

作者机构：Engineering Technology Research Center of Henan Province for Solar CatalysisCollege of Chemistry and Pharmaceutical EngineeringNanyang Normal UniversityNanyang 473061HenanChina College of Materials and Chemical EngineeringKey Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002HubeiChina School of Life SciencesThe Chinese University of Hong KongShatinNTHong Kong SARChina 

基　　金：国家自然科学基金(51872147,21671113) 高等学校学科创新引智计划(D20015) 河南省高校科技创新团队支持计划(19IRTSTHN025) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2020年第41卷第10期

页      码：1480-1487页

摘      要：To improve the photocatalytic oxidation reaction activity for NO removal, photocatalysts with excellent activity are required to activate molecular oxygen. Solid solution and heterojunction were suggested as effective strategies to enhance the molecular oxygen activation viaexciton and carrier photocatalysis. In this study, a solid solution and heterojunction containing BiOBr0.5I0.5/BiOI catalyst was synthesized, and it showed improved photocatalytic activity for removing NO. The photocatalytic NO removal mechanism indicated that synergistic effects between the solid solution and heterojunction induced the enhanced activity for molecular oxygen activation. The photogenerated holes, superoxide, and singlet oxygen generated by the carrier and exciton photocatalysis supported the high photocatalytic NO removal efficiency. This study provides new ideas for designing efficient Bi-O-X(X = Cl, Br, I) photocatalysts for oxidation reactions.

主 题 词：BiOBr0.5I0.5/BiOI NO removal Molecular oxygen activation Carrier Exciton 

学科分类：083002[083002] 0830[工学-生物工程类] 081704[081704] 081705[081705] 07[理学] 0817[工学-轻工类] 08[工学] 070304[070304] 0703[理学-化学类] 

核心收录：

D　O　I：10.1016/S1872-2067(20)63607-5

馆 藏 号：203908476...