| Title: | "Toluene decomposition by non-thermal plasma assisted CoO(x) - gamma-Al(2)O(3): The relative contributions of specific energy input of plasma, Co(3+) and oxygen vacancy" |
| Author(s): | Lei X; Wang J; Wang T; Wang X; Xie X; Huang H; Li D; Ao Z; |
| Address: | "Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangzhou Key Laboratory Environmental Catalysis and Pollution Control, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China; Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education, School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China. School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China. Advanced lnterdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai 519087, China. Electronic address: zhimin.ao@bnu.edu.cn" |
| DOI: | 10.1016/j.jhazmat.2023.131613 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Cobalt oxide (CoO(x)) is a common catalyst for plasma catalytic elimination of volatile organic compounds (VOCs). However, the catalytic mechanism of CoO(x) under radiation of plasma is still unclear, such as how the relative importance of the intrinsic structure of the catalyst (e.g., Co(3+) and oxygen vacancy) and the specific energy input (SEI) of the plasma for toluene decomposition performance. CoO(x) - gamma-Al(2)O(3) catalysts were prepared and evaluated by toluene decomposition performance. Changing the calcination temperature of the catalyst altered the content of Co(3+) and oxygen vacancies in CoO(x), resulting in different catalytic performance. The results of the artificial neural network (ANN) models presented that the relative importance of three reaction parameters (SEI, Co(3+), and oxygen vacancy) on the mineralization rate and CO(2) selectivity were as follows: SEI > oxygen vacancy > Co(3)(+) , and SEI > Co(3)(+) > oxygen vacancy, respectively. Oxygen vacancy is essential for mineralization rate, and CO(2) selectivity is more dependent on Co(3)(+) content. Furthermore, a possible reaction mechanism of toluene decomposition was proposed according to the analysis results of in-situ DRIFTS and PTR-TOF-MS. This work provides new ideas for the rational design of CoO(x) catalysts in plasma catalytic systems" |
| Keywords: | Toluene Plasma catalysis Oxygen vacancy Co(3+) cations Ozone decomposition; |
| Notes: | "PubMed-not-MEDLINELei, Xinshui Wang, Jiangen Wang, Teng Wang, Xinjie Xie, Xiaowen Huang, Haibao Li, Didi Ao, Zhimin eng Netherlands 2023/05/25 J Hazard Mater. 2023 Aug 15; 456:131613. doi: 10.1016/j.jhazmat.2023.131613. Epub 2023 May 22" |
