Effect of the sheet thickness of hierarchical SnO2 on the gas sensing performance

Wenlong Zhang, Wen Zeng, Bin Miao, Zhongchang Wang

    Research output: Contribution to journalArticle

    18 Citations (Scopus)

    Abstract

    A unique hierarchical SnO2 nanoflower was successfully synthesized via a facile one-step hydrothermal method. The nanoflower was analyzed in detail using X ray diffraction, field-emission electron microscope and transmission electron microscope. It was found that the nanoflowers are all assembled from nanosheets. The nanosheet thickness could be precisely controlled by tuning the dosage of NaOH. Gas sensing tests demonstrated that the thickness of the sheet significantly affects the gas sensing performance. The improved gas sensing properties are attributed to the thinned petals as well as their pores and defects. These results show that the thickness and morphology of hierarchical nanostructures affect the functionality of gas sensors.

    Original languageEnglish
    Pages (from-to)631-637
    Number of pages7
    JournalApplied Surface Science
    Volume355
    DOIs
    Publication statusPublished - 2015 Nov 15

    Keywords

    • Assemble
    • Gas-sensing property
    • Nanoflower
    • Nanosheet
    • Thickness

    ASJC Scopus subject areas

    • Surfaces, Coatings and Films

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