PEG-20000 assisted hydrothermal synthesis of hierarchical ZnO flowers: Structure, growth and gas sensor properties

Weiwei Guo, Xiaodan Li, Huafeng Qin, Zhongchang Wang

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    The hierarchically structured materials usually show improved physical and chemical properties. Here, using simple hydrothermal method and reagents of polyethylene glycol (PEG-20000), we synthesize the ZnO crystals and find that they exhibit hierarchical flower-like architectures assembled by nanorods. Further comparative studies demonstrate that PEG provides nucleation sites for the assembling of the nanorods, which play a critical role in producing such unique flower-like architectures. Consequently, the sensor made of ZnO nanoflowers is found to show good gas sensing performance to the hydrothion gas.

    Original languageEnglish
    Pages (from-to)163-168
    Number of pages6
    JournalPhysica E: Low-Dimensional Systems and Nanostructures
    Volume73
    DOIs
    Publication statusPublished - 2015 Jun 15

    Keywords

    • Crystal growth
    • Ethanol
    • Gas sensors
    • Surfactant
    • ZnO

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Atomic and Molecular Physics, and Optics
    • Electronic, Optical and Magnetic Materials

    Fingerprint Dive into the research topics of 'PEG-20000 assisted hydrothermal synthesis of hierarchical ZnO flowers: Structure, growth and gas sensor properties'. Together they form a unique fingerprint.

    Cite this