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Synthesis of Polyhedral ZnSnO3 Microcrystals with Controlled Exposed Facets and Their Selective Gas-Sensing Properties

Authors

  • Baoyou Geng,

    Corresponding author
    1. College of Chemistry and Materials Science Anhui Key Laboratory of Functional Molecular Solids Anhui Normal University Wuhu, 241000 (P.R. China)
    • College of Chemistry and Materials Science Anhui Key Laboratory of Functional Molecular Solids Anhui Normal University Wuhu, 241000 (P.R. China) Fax: (+86) 553-386-9303
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  • Caihong Fang,

    1. College of Chemistry and Materials Science Anhui Key Laboratory of Functional Molecular Solids Anhui Normal University Wuhu, 241000 (P.R. China)
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  • Fangming Zhan,

    1. College of Chemistry and Materials Science Anhui Key Laboratory of Functional Molecular Solids Anhui Normal University Wuhu, 241000 (P.R. China)
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  • Nan Yu

    1. College of Chemistry and Materials Science Anhui Key Laboratory of Functional Molecular Solids Anhui Normal University Wuhu, 241000 (P.R. China)
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  • This work was supported by the National Natural Science Foundation of China (20671003), the Foundation of Key Project of Natural Science of Anhui Education Committee (2006kj041a), the Young Teacher Sustentation Project of Anhui (2005jq1041zd), and the Education Department of Anhui Province (2006KJ006TD).

Abstract

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A sensitive face: Polyhedral ZnSnO3 microcrystals with controlled exposed facets are selectively synthesized in high yield by a convenient, repeatable, and low-temperature process (see image). The polyhedral ZnSnO3 particles have good gas-sensing properties and show high sensitivity to H2S, HCHO, and C2H5OH, as well as good reproducibility and short response/recovery times. Different shapes of ZnSnO3 polyhedra have unique gas sensitivity to the detected gases because of their different active facets.

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