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