Low-temperature carbon monoxide gas sensors based gold/tin dioxide |
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Authors: | Shurong Wang Yingqiang Zhao Jing Huang Yan Wang Shihua Wu Shoumin Zhang Weiping Huang |
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Affiliation: | aDepartment of Chemistry, Nankai University, Tianjin 300071, China |
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Abstract: | Tin dioxide nanocrystals were synthesized by a precipitation process and then used as the support for 2 wt.% gold/tin dioxide preparation via a deposition–precipitation method, followed by calcination at 200 °C. Thick films were fabricated from gold/tin dioxide powders, and the sensing behavior for carbon monoxide gas was investigated. The gold/tin dioxide was found to be efficient carbon monoxide gas-sensing materials under low operating temperature (83–210 °C). The Au/SnO2 sensor with SnO2 calcined at 300 °C exhibited better CO gas-sensing behavior than the SnO2 calcined at other temperatures. The experimental results indicated the potential use of Au doped SnO2 for CO gas sensing. |
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Keywords: | Low-temperature carbon monoxide sensors Gold/tin dioxide Deposition– precipitation method |
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