| Title: | Boosting Ozone Catalytic Oxidation of Toluene at Room Temperature by Using Hydroxyl-Mediated MnO(x)/Al(2)O(3) Catalysts |
| Author(s): | Zhang B; Shen Y; Liu B; Ji J; Dai W; Huang P; Zhang D; Li G; Xie R; Huang H; |
| Address: | "School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, P. R. China. Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, P. R. China. Institute of Chemical Engineering, Guangdong Academy of Sciences, Guangzhou 510665, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Ozone catalytic oxidation (OZCO) has gained great interest in environmental remediation while it still faces a big challenge during the deep degradation of refractory volatile organic compounds (VOCs) at room temperature. Hydroxylation of the catalytic surface provides a new strategy for regulating the catalytic activity to boost VOC degradation. Herein, OZCO of toluene at room temperature over hydroxyl-mediated MnO(x)/Al(2)O(3) catalysts was originally demonstrated. Specifically, a novel hydroxyl-mediated MnO(x)/Al(2)O(3) catalyst was developed via the in situ AlOOH reconstruction method and used for toluene OZCO. The toluene degradation performance of MnO(x)/Al(2)O(3) was significantly superior to those of most of the state-of-the-art catalysts, and 100% toluene was removed with an excellent mineralization rate (82.3%) and catalytic stability during OZCO. ESR and in situ DRIFTs results demonstrated that surface hydroxyl groups (HGs) greatly improved the reactive oxygen species generation, thus dramatically accelerating the benzene ring breakage and deep mineralization. Furthermore, HGs provided anchoring sites for uniformly dispersing MnO(x) and greatly enhanced toluene adsorption and ozone activation. This work paves a way for deep decomposition of aromatic VOCs at room temperature" |
| Keywords: | *Ozone Oxides Temperature Toluene Oxidation-Reduction Hydroxyl Radical Catalysis air pollution control environmental catalysis ozone catalytic oxidation volatile organic compounds; |
| Notes: | "MedlineZhang, Boge Shen, Yongjie Liu, Biyuan Ji, Jian Dai, Wenjing Huang, Pingli Zhang, Dengsong Li, Guangqin Xie, Ruijie Huang, Haibao eng Research Support, Non-U.S. Gov't 2023/04/20 Environ Sci Technol. 2023 May 2; 57(17):7041-7050. doi: 10.1021/acs.est.2c08867. Epub 2023 Apr 20" |
