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HomeMaterials Science ForumMaterials Science Forum Vol. 944A Strategy to Improve O2 Gas Response of La-SnO2...

A Strategy to Improve O₂Gas Response of La-SnO₂ Nanofibers Based Sensor through Temperature Modulation

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Abstract:

Generally sensing mechanisms of gas sensors based on metal-oxide semiconductors greatly depend on temperature, suggesting temperature modulation can be applied as a vital method to effectively enhance the sensor response. In this paper, we reported a strategy of quick-cooling operating temperature mode in the course of gas sensing process to elevate the O₂ gas response while maintaining low heating energy consumption. La-SnO₂ nanofibers synthesized by electrospinning were chosen as gas sensing materials. The O₂ gas responses by employing quick-cooling operation mode are significantly improved compared with those obtained by traditional isothermal test. The improved O₂ response is contributed to a higher coverage of negatively charged oxygen ions as a result of quick cooling. Our research offers a facile route to detect gas at low temperature with high response. More importantly, the strategy demonstrated here could also be extended to other gas sensor as long as its gas response is related to the sensor temperature.

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Periodical:

Materials Science Forum (Volume 944)

Pages:

657-665

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.944.657

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Online since:

January 2019

Authors:

Ya Xiong, Hui Li, Tian Chao Guo, Qing Zhong Xue*

Keywords:

Electrospinning, La-SnO₂ Nanofibers, O₂ Gas Sensor, Quick-Cooling Operation Mode

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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