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Hydrothermal synthesis of ultrathin ZnO nanosheets and their gas-sensing properties

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Abstract

Gas-sensing performances can often be enhanced significantly once the size of sensing nanomaterials approaches a critical value of 15 nm. Here, we synthesize, by a simple hydrothermal method accompanied by the calcination process, ultrathin ZnO nanosheets with a thickness as thin as 10–13 nm. We find that the prepared zinc hydroxide carbonate precursor is largely agglomerated, yet transformed to the ultrathin ZnO nanosheets in a dispersive fashion after the calcination process. The as-prepared ultrathin nanosheets exhibit excellent gas-sensing functions to ethanol gas at the optimal temperature as low as 300 °C under the concentration of 50 ppm, rendering them a promising sensing material for the on-site detection of ethanol.

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Acknowledgments

This work was supported in part by National Natural Science of China (51202302) and China Postdoctoral Science Foundation (No. 2012M511904). Z.W. appreciates financial supports from the Grant-in-Aid for Young Scientists (A) (grant no. 24686069) and the Challenging Exploratory Research (grant no. 24656376).

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Authors and Affiliations

  1. College of Materials Science and Engineering, Chongqing University, 400045, Chongqing, People’s Republic of China

    Weiwei Guo, Tianmo Liu, Zhongping Gou, Wen Zeng & Yong Chen

  2. WPI Research Center, Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan

    Yong Chen & Zhongchang Wang

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  1. Weiwei Guo
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  2. Tianmo Liu
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  3. Zhongping Gou
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  4. Wen Zeng
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  5. Yong Chen
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  6. Zhongchang Wang
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Correspondence to Weiwei Guo or Zhongchang Wang.

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Guo, W., Liu, T., Gou, Z. et al. Hydrothermal synthesis of ultrathin ZnO nanosheets and their gas-sensing properties. J Mater Sci: Mater Electron 24, 1764–1769 (2013). https://doi.org/10.1007/s10854-012-1009-x

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  • DOI: https://doi.org/10.1007/s10854-012-1009-x

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