期刊
ACS SENSORS
卷 6, 期 6, 页码 2218-2224出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssensors.1c00115
关键词
sensor's selectivity; metal oxide gas sensors; chemiresistive gas sensor; volatile organic compounds; sensor's kinetic analysis
资金
- Science and Engineering Research Board (SERB)
- Ministry of Human Resource Development, India (SPARC)
- Tata Consultancy Services
Semiconducting metal oxide-based gas sensors lack selectivity due to responsiveness to various gases. Gas sensing kinetic analysis was employed to precisely identify volatile organic compounds, with excellent sensor response and high sensitivity observed. The Eley-Rideal model was utilized for theoretical fitting and calculation of characteristic kinetic properties to discriminate among different VOCs.
Semiconducting metal oxide-based gas sensors have inadequate selectivity as they are responsive toward a variety of gases. Here, we report the implementation of gas sensing kinetic analysis of the sensor to identify the tested volatile organic compounds (VOCs) (2-propanol, formaldehyde, methanol, and toluene) precisely. A single chemiresistive sensor was employed having tin oxide-based hollow spheres as the sensing material, which were obtained by chemical synthesis. The gas sensing measurements were conducted in a dynamic manner where the sensor displayed excellent response with high sensitivity. Eley-Rideal model was adopted to obtain the kinetic properties of the gas sensing phenomenon through theoretical fitting of response transient curves and their corresponding kinetic parameters. The calculated characteristic kinetic properties were further examined to discriminate among different VOCs. The approach of using gas sensing kinetic analysis for multiple gas discrimination is an attractive solution to mitigate the problem of cross-sensitivity for resistive gas sensors.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据