Enhancement of visible-light photocatalysis by coupling with narrow-band-gap semiconductor: A case study on Bi 2S 3/Bi 2WO 6

Zhijie Zhang, Wenzhong Wang, Lu Wang, Songmei Sun

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    326 Citations (Scopus)

    Abstract

    To overcome the drawback of low photocatalytic efficiency brought by electron-hole recombination and narrow photoresponse range, we designed a novel Bi 2S 3/Bi 2WO 6 composite photocatalyst. The composite possesses a wide photoabsorption until 800 nm, which occupies nearly the whole range of the visible light. Compared with bare Bi 2WO 6, the Bi 2S 3/Bi 2WO 6 composite exhibits significantly enhanced photocatalytic activity for phenol degradation under visible light irradiation. On the basis of the calculated energy band positions, the mechanism of enhanced photocatalytic activity was proposed. The present study provides a new strategy to design composite materials with enhanced photocatalytic performance.

    Original languageEnglish
    Pages (from-to)593-597
    Number of pages5
    JournalACS Applied Materials and Interfaces
    Volume4
    Issue number2
    DOIs
    Publication statusPublished - Feb 22 2012

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)

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