| Improved and Reduced Performance of Cu- and Ni-Substituted Co3O4 Catalysts with Varying Co-oh/Co-Td and Co3+/Co2+ Ratios for the Complete Catalytic Oxidation of VOCs | |
Ma, Ying; Wang, Lian ; Ma, Jinzhu; Liu, Fudong; Einaga, Hisahiro; He, Hong
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| 2022-06 | |
| Source Publication | ENVIRONMENTAL SCIENCE & TECHNOLOGY
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| ISSN | 0013-936X |
| Issue | 0Pages:1-11 |
| Abstract | The Co3O4 spinel is one of the most promising transition metal oxide (TMO) catalysts for volatile organic compound (VOC) treatment. Substituting effects have usually been utilized to improve the catalytic performance of the Co3O4 spinel. In this study, Cu- and Ni-substituted Co3O4 catalysts derived from mixed metal-organic frameworks (MMOFs) retained similar spinel structures but exhibited improved and reduced performance for o-xylene oxidation, respectively. Physicochemical characterization and DFT calculations revealed that Cu and Ni substitution into the Co3O4 spinel varied the valence (Co3+/Co2+) and geometry (Co-oh/Co-Td) distributions of Co cations through different partial electron transfer and substitution sites. The higher Co3+/Co2+ and Co-oh/Co-Td ratios of the CuCo2O4 catalyst contributed to the superior reducibility and oxygen mobility, which facilitated the oxidation of intermediates at lower temperatures in the catalytic oxidation of o-xylene. Meanwhile, the NiCo2O4 catalyst with lower Co3+/Co2+ and Co-oh/Co-Td ratios could not completely oxidize intermediates under the same conditions due to inferior redox properties. Therefore, the CuCo2O4 catalyst showed superior catalytic activity and stability to the NiCo2O4 catalyst for the catalytic oxidation of o-xylene. This work provides insights into the synthesis of substituted Co3O4 catalysts from MMOFs and mechanism of substituting effects, which might guide the design of efficient TMO catalysts for VOC treatment. |
| Department | 大气环境与污染控制实验室 ; 大气环境与污染控制实验室 |
| Keyword | MESOPOROUS MCO2O4 M FORMALDEHYDE OXIDATION O-XYLENE SURFACE OXYGEN TOLUENE OXIDES NANOWIRES NANORODS MN |
| Document Type | 期刊论文 |
| Identifier | https://ir.rcees.ac.cn/handle/311016/47410 |
| Collection | 大气环境与污染控制实验室 |
| Affiliation | 1.Chinese Acad Sci, State Key Joint Lab Environm Simulat & Pollut Con, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China 4.Univ Cent Florida, NanoSci Technol Ctr NSTC, Dept Civil Environm & Construct Engn CECE, Catalysis Cluster Renewable Energy & Chem Transfo, Orlando, FL 32816 USA 5.Kyushu Univ, Fac Engn Sci, Fukuoka 8190395, Japan |
| Recommended Citation GB/T 7714 | Ma, Ying,Wang, Lian,Ma, Jinzhu,et al. Improved and Reduced Performance of Cu- and Ni-Substituted Co3O4 Catalysts with Varying Co-oh/Co-Td and Co3+/Co2+ Ratios for the Complete Catalytic Oxidation of VOCs[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022(0):1-11. |
| APA | Ma, Ying,Wang, Lian,Ma, Jinzhu,Liu, Fudong,Einaga, Hisahiro,&He, Hong.(2022).Improved and Reduced Performance of Cu- and Ni-Substituted Co3O4 Catalysts with Varying Co-oh/Co-Td and Co3+/Co2+ Ratios for the Complete Catalytic Oxidation of VOCs.ENVIRONMENTAL SCIENCE & TECHNOLOGY(0),1-11. |
| MLA | Ma, Ying,et al."Improved and Reduced Performance of Cu- and Ni-Substituted Co3O4 Catalysts with Varying Co-oh/Co-Td and Co3+/Co2+ Ratios for the Complete Catalytic Oxidation of VOCs".ENVIRONMENTAL SCIENCE & TECHNOLOGY .0(2022):1-11. |
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| File Name/Size | DocType | Version | Access | License | ||
| Improved and Reduced（6229KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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