期刊
CERAMICS INTERNATIONAL
卷 47, 期 18, 页码 26501-26510出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2021.06.063
关键词
Sm; Ethanol; Gas-sensing performance; SnO2
资金
- Scientific Research Project of Tianjin Education Commission [2018KJ250]
- Research Funds for the Central Universities [3122017070]
- Experimental Technology Innovation Fund Project of Civil Aviation University of China [2020CXJJ33]
- Tianjin Natural Science Foundation [20JCZDJC00160]
- Tianjin Institute of industrial biology of Chinese Academy of Sciences
Metal oxide semiconductor-based sensors doped with Sm show promising results for ethanol gas detection with high response and outstanding selectivity, indicating potential applications in trace gas detection. The enhancement response of Sm-doped SnO2 nanocomposites was also discussed.
Metal oxide semiconductor-based sensors are widely used in medicine, industry, agriculture and environmental protection. In this paper, a series of different molar ratios of Sm were doped into SnO2 nanoparticles through a coprecipitation route. The as-obtained Sm/SnO2 nanocomposites were analyzed by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and transmission electron microscope. The results indicated that Sm doping reduced the size of SnO2 nanoparticles and an Sm-O-Sn bond formed on the surface of Sm/SnO2 nanocomposites. The gas-sensing examination of the Sm/SnO2 nanocomposite-based sensor was assessed, and the results displayed that the fabricated sensor with a 4% molar ratio of Sm-decorated SnO2 exhibited a high response (138.9) and outstanding selectivity towards ethanol gas at 160 degrees C, and the limit of detection was as low as 100 ppb, implying a potential application in trace gas detection. Finally, the enhancement response of the Sm-doped SnO2 nanocomposites was discussed.
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