Solvent-induced fabrication of Cu/MnOx nanosheets with abundant oxygen vacancies for efficient and long-lasting photothermal catalytic degradation of humid toluene vapor

被引：70

作者：

Jiang, Shanliang ^{[1
]}

Li, Changhao ^{[1
]}

Muhammad, Yaseen ^{[2
]}

Tang, Ying ^{[1
]}

Wang, Ruimeng ^{[1
]}

Li, Junjie ^{[1
]}

Li, Jing ^{[1
]}

Zhao, Zhongxing ^{[1
]}

Zhao, Zhenxia ^{[1
]}

机构：

[1] Guangxi Univ, Sch Chem & Chem Engn, State Key Lab Featured Met Mat & Life Cycle Safety, Key Lab New Low Carbon Green Chem Technol,Educ Dep, Nanning 530004, Peoples R China

[2] Univ Peshawar, Inst Chem Sci, Peshawar 25120, KP, Pakistan

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2023年 / 328卷

基金：

中国国家自然科学基金;

关键词：

Cu/Mn-based oxides nanosheets; Interfacial oxygen vacancies; Photothermal catalytic toluene degradation; High humidity; VOLATILE ORGANIC-COMPOUNDS; OXIDATION; OXALATE; VOCS; DECOMPOSITION; TEMPERATURE; REMOVAL; DEFECTS; SURFACE; MN;

D O I：

10.1016/j.apcatb.2023.122509

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：

Construction of highly-active photothermal catalysts featuring merits of high quantum efficiency and superior heat resistance is a great challenge during volatile organic compounds (VOCs) degradation under high humidity. Herein, a facile solvent-induced dimensionality reduction strategy was proposed to engineer a nanosheeted and polycrystalline Cu/Mn-based catalyst (M-Cu/MnOx) having interfacial oxygen vacancies for enhanced photothermal catalytic degradation of toluene under highly humid conditions. Unique Cu-mediated 8-MnO2/Mn3O4 nanosheets with high surface area exhibited excellent light absorptivity and photogenerated carrier separation efficiency, as well as superior light-driven thermogenesis. It realized ultra-high (92.8%) toluene conversion and deep mineralization (84.4%) under RH = 80% and continuous catalytic reaction (200 h). Its toluene degradation rate exhibited 3.5-71.9 times higher than reported state-of-the-art photothermal catalysts. The newly designed M-Cu/MnOx catalyst provides a promising, low-cost and alternative for the efficient degradation of toluene and other similar VOCs under humid conditions on large-scale operations.

引用

页数：14

共 74 条

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