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Synthesis and gas sensing properties of perovskite CdSnO3 nanoparticles

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Abstract

The CdSnO3 semiconducting oxide that can be used as a gas-sensitive material for detecting ethanol gas is reported in this paper. CdSnO3 nanoparticles were prepared by a chemical co-precipitation synthesis method, in which the preparation conditions were carefully controlled. The n-type gas-sensing semiconductors were obtained from the as-synthesized powders calcined at 600°C for 1 h. The phase and microstructure of the obtained nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer–Emmett–Teller (BET) method with a gas adsorption analyzer. CdSnO3 has a small particle size range of 30–50 nm and a high surface area of 9.12 m2/g, and a uniformity global shape. The gas sensitivity and operating temperature, and selectivity of CdSnO3-based sensors were measured in detail. The gas sensors fabricated by CdSnO3 nanoparticles had good sensitivity and selectivity to vapor of C2H5OH when working temperature at 267°C, the value of gas sensitivity at 100 ppm of C2H5OH gas can reach 11.2 times. Furthermore, gas-sensing mechanism was studied by using chromatographic analysis.

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, China

    Xiaohua Jia & Huiqing Fan

  2. College of Chemistry and Environmental Science, Henan Normal University, Xinxiang, Henan, 453007, China

    Xiangdong Lou

  3. Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, China

    Jiaqiang Xu

Authors
  1. Xiaohua Jia
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  2. Huiqing Fan
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  3. Xiangdong Lou
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  4. Jiaqiang Xu
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Correspondence to Huiqing Fan.

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Jia, X., Fan, H., Lou, X. et al. Synthesis and gas sensing properties of perovskite CdSnO3 nanoparticles. Appl. Phys. A 94, 837–841 (2009). https://doi.org/10.1007/s00339-008-4865-8

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  • DOI: https://doi.org/10.1007/s00339-008-4865-8

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