| Title: | Benzene decomposition by non-thermal plasma: A detailed mechanism study by synchrotron radiation photoionization mass spectrometry and theoretical calculations |
| Author(s): | Liang Y; Li J; Xue Y; Tan T; Jiang Z; He Y; Shangguan W; Yang J; Pan Y; |
| Address: | "Research Center for Combustion and Environmental Technology, Shanghai Jiao Tong University, Shanghai 200240, China. State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China. Laboratory of Theoretical and Computational Nanoscience, CAS Key Laboratory of Nanophotonic Materials and Devices, National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190, China. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, China" |
| DOI: | 10.1016/j.jhazmat.2021.126584 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "Non-thermal Plasma (NTP) catalysis is considered as one of the most promising technologies to address a wide range of environmental needs, such as volatile organic compounds (VOCs) and NOx removal. To meet the updated environmental emission standard, the NTP catalysis reaction system needs to be better understood and further optimized. In this work, the degradation process of benzene in NTP, which is still regarded as a 'black box' process, was explored by synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS). For the first time, we observed over 20 representative species by PIMS and identified their structures accurately by photoionization efficiency (PIE) spectra. Phenol, acetylene and acrolein were recognized as the three main products. More intriguingly, concentration profiles demonstrated that a large amount of acrolein and also several higher-order products, which were usually neglected in previous research, were produced during the NTP destruction process. The details of the benzene degradation reaction mechanism, were finally established by the combination of SVUV-PIMS results, thermochemistry and theoretical calculations. This work helps to complete the mechanistic picture of plasma chemistry, which may be helpful on raveling the more complicated NTP catalysis mechanism in the future therefore contributing to design of improved NTP system for environmental applications" |
| Keywords: | Benzene Mass Spectrometry *Plasma Gases Synchrotrons *Volatile Organic Compounds Non-thermal plasma catalysis Reaction mechanism Svuv-pims; |
| Notes: | "MedlineLiang, Yuting Li, Jiayi Xue, Yingying Tan, Ting Jiang, Zhi He, Yaoyu Shangguan, Wenfeng Yang, Jiuzhong Pan, Yang eng Research Support, Non-U.S. Gov't Netherlands 2021/07/18 J Hazard Mater. 2021 Oct 15; 420:126584. doi: 10.1016/j.jhazmat.2021.126584. Epub 2021 Jul 4" |
