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Environ Sci Technol

Title:		Expediting Toluene Combustion by Harmonizing the Ce-O Strength over Co-Doped CeZr Oxide Catalysts
Author(s):		Shen Y; Deng J; Hu X; Chen X; Yang H; Cheng D; Zhang D;
Address:		"State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China"
Journal Title:		Environ Sci Technol
Year:		2023
Volume:		20230113
Issue:		4
Page Number:		1797 - 1806
DOI:		10.1021/acs.est.2c07853
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"Low-temperature catalytic degradation of volatile organic compounds (VOCs) by enhancing the activity of non-precious metal catalysts has always been the focus of attention. The mineralization of aromatic VOCs requires the participation of a large number of oxygen atoms, so the activation of oxygen species is crucial in the degradation reaction. Herein, we originally adjust the Ce-O bond strength in CeZr oxide catalysts by cobalt doping to promote the activation of oxygen species, thus improving the toluene degradation performance while maintaining high stability. Subsequent characterizations and theoretical calculations demonstrate that the weakening of the Ce-O bond strength increases the oxygen vacancy content, promotes the activation of oxygen species, and enhances the redox ability of the catalysts. This strategy also promotes the activation of toluene and accelerates the depletion of intermediate species. This study will contribute a strategy to enhance the activation ability of oxygen species in non-noble metal oxide catalysts, thereby enhancing the degradation performance of VOCs"
Keywords:		*Oxides/chemistry *Toluene/chemistry Oxidation-Reduction Catalysis Oxygen air pollution control catalytic combustion environmental catalysis toluene volatile organic compounds;
Notes:		"MedlineShen, Yongjie Deng, Jiang Hu, Xiaonan Chen, Xin Yang, Huiqian Cheng, Danhong Zhang, Dengsong eng Research Support, Non-U.S. Gov't 2023/01/14 Environ Sci Technol. 2023 Jan 31; 57(4):1797-1806. doi: 10.1021/acs.est.2c07853. Epub 2023 Jan 13"