Synthesis of boron nitride nanosheets with a few atomic layers and their gas-sensing performance

Liyang Lin, Tianmo Liu, Yu Zhang, Rong Sun, Wen Zeng, Zhongchang Wang

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    We report a successful synthesis of hexagonal boron nitride (h-BN) nanosheets with a few atomic layers by a facile yet efficient solvothermal method at the relatively low temperature. After identifying the pure h-BN phase by the X-ray diffraction, the ultrathin BN nanosheets were systematically characterized by field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS) element mapping and high-resolution transmission electron microscopy (HRTEM). We find that the h-BN nanosheet has a nearly transparent morphology with a thickness of ~1.36 nm (four atomic layers) and shows dozens of square microns in area. We test the gas-sensing properties of the ultrathin h-BN nanosheets towards ethanol and NH3, and find that the fabricated gas sensors show a fast response and excellent repeatability to ethanol at optimal operating temperature of 300 oC.

    Original languageEnglish
    Pages (from-to)971-975
    Number of pages5
    JournalCeramics International
    Volume42
    Issue number1
    DOIs
    Publication statusPublished - 2016 Jan 1

    Keywords

    • Atomic layers
    • Gas sensing
    • Solvothermal method
    • Ultrathin h-BN nanosheets

    ASJC Scopus subject areas

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

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