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

Weiwei Guo, Min Fu, Chongzhi Zhai, Zhongchang Wang

    Research output: Contribution to journalArticlepeer-review

    63 Citations (Scopus)


    Gas-sensing performances are often enhanced significantly once size of the sensing materials approaches a critical value of 15 nm. Here, we synthesize, by a simple hydrothermal method, ultrathin hexagonal ZnO nanosheets with a thickness of 17 nm. The cetyltrimethylammonium bromide is found to play a critical role in producing such unique hexagonal ZnO nanosheets, and a possible growth mechanism is proposed. The as-prepared ultrathin nanosheets exhibit excellent gas-sensing properties to formaldehyde gas at optimal temperature of 350 C under concentration of 50 ppm, rendering the ultrathin nanosheets promising for the on-site detection of formaldehyde.

    Original languageEnglish
    Pages (from-to)2295-2298
    Number of pages4
    JournalCeramics International
    Issue number1 PART B
    Publication statusPublished - 2014 Jan


    • Crystal growth
    • D. ZnO
    • Formaldehyde
    • Gas sensors
    • Nanosheet

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Process Chemistry and Technology
    • Electronic, Optical and Magnetic Materials
    • Surfaces, Coatings and Films
    • Materials Chemistry


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