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Synthesis of biomorphic tube-like CuO using pomelo white flesh as biotemplate and its sensing properties over H2S at room temperature

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Abstract

Biomorphic tube-like CuO was synthesized using pomelo white flesh as biotemplate for the first time. The sample showed a good selectivity to H2S in gasoline 92#, formaldehyde, CH4, H2, CO, toluene, acetone, and ethanol. Although there was an obvious change in response/recovery time with H2S concentration from 10 ppb to 10 ppm, all the response/recovery times were <60 s. Moreover, the sample exhibited stable detection performance for 5 ppm H2S at room temperature over a testing period of 3 months. The detection levels were uniform during cycling. This outstanding sensing performance is attributed to the unique structure, which was convenient for H2S molecule adsorption and facilitated the transformation of semiconducting p-type CuO to metallic CuS during H2S detection.

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Acknowledgements

Authors would like to thank Professor W. Chu from Sichuan University for his assistance with the characterization and senor performance test.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China

    Jing Zhen Zhang & Yun Yan

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  1. Jing Zhen Zhang
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  2. Yun Yan
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Correspondence to Yun Yan.

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Zhang, J.Z., Yan, Y. Synthesis of biomorphic tube-like CuO using pomelo white flesh as biotemplate and its sensing properties over H2S at room temperature. J Mater Sci 52, 13711–13718 (2017). https://doi.org/10.1007/s10853-017-1471-1

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  • DOI: https://doi.org/10.1007/s10853-017-1471-1

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