| Title: | Promote hydroxyl radical and key intermediates formation for deep toluene mineralization via unique electron transfer channel |
| Author(s): | Ma H; Wang X; Jin R; Tan T; Zhou X; Fang R; Shen Y; Dong F; Sun Y; |
| Address: | "National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing 400067, China; School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China; College of Environment and Ecology, Chongqing University, Chongqing 400045, China. National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing 400067, China. Hangzhou Tianliang Detection Technology COM.,LTD, Hangzhou 310000, China. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China; State Centre for International Cooperation on Designer Low carbon and Environmental Materials (CDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China. School of Resources and Environment, University of Electronic Science and Technology of China, Chengdu 611731, China. Electronic address: syhsyj@163.com" |
| DOI: | 10.1016/j.jcis.2022.10.160 |
| ISSN/ISBN: | 1095-7103 (Electronic) 0021-9797 (Linking) |
| Abstract: | "The degradation and mineralization of volatile organic compounds (VOCs) in gas-solid phase photocatalytic systems suffer great challenges due to the low electron transfer efficiency and slow benzene ring-opening kinetics. Hence, a heterojunction photocatalyst of Bi(2)SiO(5)/TiO(2) has been synthesized by a facile method. Bi(2)SiO(5)/TiO(2) shows the ability of mineralizing toluene to CO(2) with a degradation rate of 85.5%, while TiO(2) is 49.0% and presents a continuous deactivation. Experimental characterizations and theoretical calculations indicate that a unique electron transfer channel of Bi/Si-O-Ti can be established in the heterojunction sample due to the coupling of the interface. The channel facilitates electron transfer to the catalyst surface, generating *OH radicals with strong oxidation and ring-opening ability. Moreover, in-situ DRIFTS reveal that the selective generation of benzoic acid on Bi(2)SiO(5)/TiO(2) heterojunction plays a critical role in the ring-opening of toluene. This work discloses a novel paradigm to obtain the deep and durable photocatalytic mineralization of toluene" |
| Keywords: | *Toluene *Hydroxyl Radical Electrons Titanium Charge transfer Heterojunction Photocatalysis Reaction intermediates Toluene degradation; |
| Notes: | "MedlineMa, Hao Wang, Xuemei Jin, Ruiben Tan, Tianqi Zhou, Xi Fang, Ruimei Shen, Yu Dong, Fan Sun, Yanjuan eng 2022/11/09 J Colloid Interface Sci. 2023 Jan 15; 630(Pt B):704-713. doi: 10.1016/j.jcis.2022.10.160. Epub 2022 Nov 2" |
