期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 290, 期 -, 页码 684-690出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.03.115
关键词
TiO2 nanotubes array; Sandwich-structured sensor; Capacitive response; Resistive response; Selectivity
资金
- SERB, Govt. of India [ECR/2015/000345]
The present study demonstrates a new measurement technique for the selective detection of multiple volatile organic compounds (VOCs) at room temperature (300 K) by using a single sensor. Electrochemically grown TiO2 nanotubes based sandwich-structured device was fabricated to realize the selectivity technique. The proposed method of selective detection of VOCs involved simultaneous measurement of both resistive and capacitive responses of the sensor upon exposure to different VOCs. By using these two types of responses, an algorithm was developed to formulate a new quantity known as 'selectivity constant' (S) for each VOC. This quantity exhibited a unique and concentration independent numerical value for different VOCs. The developed algorithm was tested successfully to identify different types of VOCs like methanol, ethanol, acetone and 2-propanol and their concentration.
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