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Proceedings Paper

Nitrogen dioxide detection based on MWCNTs/SnO2 composites at room temperature
Author(s): Yong Zhou; Guangzhong Xie; Tao Xie; Ting Kang; Yadong Jiang
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Paper Abstract

In this paper, Multi-walled carbon nanotubes (MWCNTs)-tin oxide (SnO2) composites were selected as sensing materials to detect NO2 with concentrations ranging from 10 ppm to 50 ppm. Two sensors with different mass fractions of SnO2 and MWCNTs, i.e., 6.7% and 10%, were fabricated by airbrushing the composites on interdigitated electrodes (IDEs). Response performances of both sensors at room temperature were investigated. Results showed that the sensor with mass fraction of 10% exhibited a larger sensing response and a bigger sensitivity than the other one, and a good linearity was observed for both ones. In addition, both sensors had a good selectivity to NO2 in comparison with the other five interfering gases.

Paper Details

Date Published: 21 August 2014
PDF: 7 pages
Proc. SPIE 9285, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials for Manufacturing and Testing, 928509 (21 August 2014); doi: 10.1117/12.2068535
Show Author Affiliations
Yong Zhou, Univ. of Electronic Science and Technology of China (China)
Guangzhong Xie, Univ. of Electronic Science and Technology of China (China)
Tao Xie, Univ. of Electronic Science and Technology of China (China)
Ting Kang, Univ. of Electronic Science and Technology of China (China)
Yadong Jiang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9285:
7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials for Manufacturing and Testing
Xiangang Luo; Harald Giessen, Editor(s)

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