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Gas-sensing properties and in-situ diffuse-reflectance Fourier-transform infrared spectroscopy study of diethyl ether adsorption and reactions on SnO2 film Cover

Gas-sensing properties and in-situ diffuse-reflectance Fourier-transform infrared spectroscopy study of diethyl ether adsorption and reactions on SnO2 film

By: Ning Wang,  Kaijin Huang and  Jian Song  
Open Access
|Jul 2017

Abstract

Diethyl ether is a common industrial reagent and medical anesthetic. It is necessary to carry out real-time monitoring of this molecule due to its harmful effects on human health. In this paper, a highly sensitive diethyl ether SnO2 gas-sensing material has been prepared by a sol-gel method. The gas sensitivity was tested by a home-made gas-sensing equipment. The surface adsorption and reaction processes between the SnO2 gas-sensing film and the diethyl ether have been studied by in situ diffuse-reflectance Fourier-transform infrared spectroscopy (DRFT-IR) at different temperatures. The results show that the SnO2 gas-sensing material has high sensitivity to diethyl ether, and the lowest detection limit can reach 1 ppm. Furthermore, ethyl (CH3CH2●), oxoethyl (CH3CH2O●), ethanol (CH3CH2OH), formaldehyde (HCHO), acetaldehyde (CH3CHO), ethylene (C2H4), H2O and CO2 surface species are formed during diethyl ether adsorption at different temperatures. A possible mechanism of the reaction process is discussed.

DOI: https://doi.org/10.1515/msp-2017-0037 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 265 - 274
Submitted on: Apr 22, 2016
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Accepted on: Feb 5, 2017
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Published on: Jul 26, 2017
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2017 Ning Wang, Kaijin Huang, Jian Song, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.