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Ozone-Activated Cataluminescence Sensor System for Dichloroalkanes Based on Silica Nanospheres
ACS Sensors ( IF 8.2 ) Pub Date : 2021-07-16 , DOI: 10.1021/acssensors.1c00369 Chudong Wei 1 , Hongjie Song 1 , Zili Huang 1 , Lichun Zhang 1 , Li Li 1 , Yi Lv 2
ACS Sensors ( IF 8.2 ) Pub Date : 2021-07-16 , DOI: 10.1021/acssensors.1c00369 Chudong Wei 1 , Hongjie Song 1 , Zili Huang 1 , Lichun Zhang 1 , Li Li 1 , Yi Lv 2
Affiliation
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 μg mL–1, 1,2-dichloropropane: 0.03 μg mL–1) and benign selective performance under the interference of CO2, H2O, NO, NO2, SO2, CS2, 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.
中文翻译:
基于二氧化硅纳米球的二氯烷烃臭氧活化催化发光传感器系统
二氯烷烃是典型的具有明显生物毒性的氯化挥发性有机化合物(CVOCs),其检测和监测对环境污染和公众健康具有重要意义。在此,开发了一种基于二氧化硅纳米球的新型臭氧激活催化发光 (CTL) 传感器系统,用于二氯烷烃的高灵敏度和快速定量。典型的 CTL 系统与等离子体臭氧辅助装置相结合,旨在促进二氯烷烃的 CTL 响应。等离子体产生的臭氧提供了催化氧化过程的新途径,伴随着二氯烷烃的 CTL 信号放大导致增强的 CTL 传感器系统具有改进的检测限(1,2-二氯乙烷:0.04 μg mL –1 , 1, 2-二氯丙烷:0.03 μg/mL–1 ) 和在CO 2、H 2 O、NO、NO 2、SO 2、CS 2和其他常见CVOCs干扰下的良性选择性性能。此外,基于多重表征和讨论,提出了分段 CTL 机制,包括臭氧和二氯烷烃的共吸附、热消除、臭氧化路线和发光步骤。所提出的方法和理论为分析活性较低的挥发性有机化合物开辟了一个有吸引力的前景。
更新日期:2021-08-27
中文翻译:
基于二氧化硅纳米球的二氯烷烃臭氧活化催化发光传感器系统
二氯烷烃是典型的具有明显生物毒性的氯化挥发性有机化合物(CVOCs),其检测和监测对环境污染和公众健康具有重要意义。在此,开发了一种基于二氧化硅纳米球的新型臭氧激活催化发光 (CTL) 传感器系统,用于二氯烷烃的高灵敏度和快速定量。典型的 CTL 系统与等离子体臭氧辅助装置相结合,旨在促进二氯烷烃的 CTL 响应。等离子体产生的臭氧提供了催化氧化过程的新途径,伴随着二氯烷烃的 CTL 信号放大导致增强的 CTL 传感器系统具有改进的检测限(1,2-二氯乙烷:0.04 μg mL –1 , 1, 2-二氯丙烷:0.03 μg/mL–1 ) 和在CO 2、H 2 O、NO、NO 2、SO 2、CS 2和其他常见CVOCs干扰下的良性选择性性能。此外,基于多重表征和讨论,提出了分段 CTL 机制,包括臭氧和二氯烷烃的共吸附、热消除、臭氧化路线和发光步骤。所提出的方法和理论为分析活性较低的挥发性有机化合物开辟了一个有吸引力的前景。