| Title: | Ozone-Activated Cataluminescence Sensor System for Dichloroalkanes Based on Silica Nanospheres |
| Author(s): | Wei C; Song H; Huang Z; Zhang L; Li L; Lv Y; |
| Address: | "Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China. Analytical & Testing Center, Sichuan University, Chengdu 610064, China" |
| DOI: | 10.1021/acssensors.1c00369 |
| ISSN/ISBN: | 2379-3694 (Electronic) 2379-3694 (Linking) |
| Abstract: | "The detection and monitoring of dichloroalkanes, which are typical chlorinated volatile organic compounds (CVOCs) with obvious biological toxicity, is of significance for environmental pollution and public health. Herein, a novel ozone-activated cataluminescence (CTL) sensor system based on silica nanospheres was developed for highly sensitive and fast quantification of dichloroalkanes. A typical CTL system coupled with a plasma-ozone-assist unit was designed for promoting the CTL response of dichloroalkanes. The ozone generated by plasma provides a new pathway of catalytic oxidation process, which accompanied by the CTL signal amplification of dichloroalkanes results in an enhanced CTL sensor system with improved limit of detection (1,2-dichloroethane: 0.04 mug mL(-1), 1,2-dichloropropane: 0.03 mug mL(-1)) and benign selective performance under the interference of CO(2), H(2)O, NO, NO(2), SO(2), CS(2), and other common CVOCs. Moreover, a segmented CTL mechanism including co-adsorption of ozone and dichloroalkanes, thermal elimination, the ozonation route, and a luminous step was ratiocinated based on multiple characterizations and discussion. The proposed methodology and theory open up an attractive perspective for the analysis of less active volatile organic compounds" |
| Keywords: | "Catalysis Luminescent Measurements *Nanospheres *Ozone Silicon Dioxide 1, 2-dichloroethane cataluminescence dichloroalkane gas sensor plasma-ozone-assist sensor system silica nanospheres;" |
| Notes: | "MedlineWei, Chudong Song, Hongjie Huang, Zili Zhang, Lichun Li, Li Lv, Yi eng Research Support, Non-U.S. Gov't 2021/07/17 ACS Sens. 2021 Aug 27; 6(8):2893-2901. doi: 10.1021/acssensors.1c00369. Epub 2021 Jul 16" |
