Boosting full-spectrum light driven surface lattice oxygen activation of ZnMn2O4 by facet engineering for highly efficient photothermal mineralization of toluene

被引：50
作者：
Cheng, Qiang [1 ]
Li, Yuan [1 ]
Wang, Zhuangzhuang [1 ]
Wang, Xiaotian [1 ]
Zhang, Gaoke [1 ]
机构：
[1] Wuhan Univ Technol, Shenzhen Res Inst, Hubei Key Lab Mineral Resources Proc & Environm, State Key Lab Silicate Mat Architectures, 122 Luoshi Rd, Wuhan 430070, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2023年 / 324卷
基金：
中国国家自然科学基金;
关键词：
Surface lattice oxygen; Face engineering; Photothermal oxidation; Toluene mineralization; SPINEL COBALT OXIDES; CATALYTIC-PROPERTIES; CRYSTAL-PLANE; OXIDATION; PERFORMANCE; COMBUSTION; ADSORPTION; MORPHOLOGY; KINETICS; CO3O4;
D O I：
10.1016/j.apcatb.2022.122274
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
To improve the catalytic activity of photothermal catalysts for efficient mineralization of volatile organic compounds still keeps challenge. Herein, ZnMn2O4 with controllably exposed {010} facets (ZMO-H), {11-1} facets (ZMO-R), and {1-1-1} facets (ZMO-C) were firstly synthesized and used to unveil an essential role of facet-dependent activation of surface lattice oxygen for toluene mineralization under full-spectrum light irradiation. The experimental studies and theoretical calculations together evidenced that as compared to ZMO-R and ZMO-C, ZMO-H is favorable for activating surface lattice oxygen, owing to its relatively stronger light absorption, higher surface lattice oxygen content, and lower oxygen dissociation energy. The theoretical calculations further confirmed that toluene is more easily adsorbed by ZMO-H than by ZMO-R and ZMO-C. All these advantages have substantially afforded the toluene photothermal oxidation activity of ZMO-H. This finding confirms that surface lattice oxygen activation of catalyst by facet engineering is crucial on the photothermal oxidation of toluene.
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页数：12
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