Nitrogen dioxide detection based on MWCNTs/SnO2 composites at room temperature

Yong Zhou; Guangzhong Xie; Tao Xie; Ting Kang; Yadong Jiang

doi:10.1117/12.2068535

21 August 2014 Nitrogen dioxide detection based on MWCNTs/SnO₂ composites at room temperature

Yong Zhou, Guangzhong Xie, Tao Xie, Ting Kang, Yadong Jiang

Proceedings Volume 9285, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials for Manufacturing and Testing; 928509 (2014) https://doi.org/10.1117/12.2068535
Event: 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2014), 2014, Harbin, China

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.

Citation Download Citation

Yong Zhou, Guangzhong Xie, Tao Xie, Ting Kang, and Yadong Jiang "Nitrogen dioxide detection based on MWCNTs/SnO₂ composites at room temperature", 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); https://doi.org/10.1117/12.2068535

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