Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Crystal transformation of 2D tungstic acid H2WO4 to WO3 for enhanced photocatalytic water oxidation

    259638.pdf (1.158Mb)
    Access Status
    Open access
    Authors
    Ke, J.
    Zhou, H.
    Liu, J.
    Duan, Xiaoguang
    Zhang, H.
    Liu, Shaomin
    Wang, Shaobin
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ke, J. and Zhou, H. and Liu, J. and Duan, X. and Zhang, H. and Liu, S. and Wang, S. 2018. Crystal transformation of 2D tungstic acid H2WO4 to WO3 for enhanced photocatalytic water oxidation. Journal of Colloid and Interface Science. 514: pp. 576-583.
    Source Title
    Journal of Colloid and Interface Science
    DOI
    10.1016/j.jcis.2017.12.066
    ISSN
    0021-9797
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/61544
    Collection
    • Curtin Research Publications
    Abstract

    New photocatalytic materials for stable reduction and/or oxidization of water by harvesting a wider range of visible light are indispensable to achieve high practical efficiency in artificial photosynthesis. In this work, we prepared 2D WO 3 ·H 2 O and WO 3 nanosheets by a one-pot hydrothermal method and sequent calcination, focusing on the effects of crystal transformation on band structure and photocatalytic performance for photocatalytic water oxidation in the presence of electron acceptors (Ag + ) under simulated solar light irradiation. The as-prepared WO 3 nanosheets exhibit enhanced rate of photocatalytic water oxidation, which is 6.3 and 3.6 times higher than that of WO 3 ·H 2 O nanosheets and commercial WO 3 , respectively. It is demonstrated that the releasing of water molecules in the crystal phase of tungstic acid results in transformation of the crystal phase from orthorhombic WO 3 ·H 2 O to monoclinic WO 3 , significantly improving the activity of photocatalytic water oxidation in the presence of Ag + because the shift-up of conduction band of WO 3 matches well with the electrode potential of Ag + /Ag(s), leading to efficient separation of photoinduced electrons and holes in pure WO 3 nanosheets.

    Related items

    Showing items related by title, author, creator and subject.

    • Monodisperse Co3O4 quantum dots on porous carbon nitride nanosheets for enhanced visible-light-driven water oxidation
      Zhang, H.; Tian, W.; Zhou, L.; Sun, Hongqi; Tade, Moses; Wang, Shaobin (2016)
      Here we report a facile annealing process for homogeneous deposition of Co3O4 quantum dots (Co3O4 QDs) onto porous g-C3N4 nanosheets. It was discovered that pores were catalytically produced around Co3O4 QDs. In the ...
    • Zeolitic Imidazolate Framework/Graphene Oxide Hybrid Nanosheets Functionalized Thin Film Nanocomposite Membrane for Enhanced Antimicrobial Performance
      Wang, J.; Wang, Y.; Zhang, Y.; Uliana, A.; Zhu, J.; Liu, Jian; Van Der Bruggen, B. (2016)
      © 2016 American Chemical Society. Inspired by the rational design concept, a novel antimicrobial agent zeolitic imidazolate framework-8 (ZIF-8)/graphene oxide (GO) was synthesized and utilized as a novel and efficient ...
    • Heterostructured WO3@CoWO4 bilayer nanosheets for enhanced visible-light photo, electro and photoelectro-chemical oxidation of water
      Zhang, H.; Tian, W.; Li, Y.; Sun, Hongqi; Tade, Moses; Wang, Shaobin (2018)
      Herein, a facile interface-induced synthesis method is first established to newly fabricate two-dimensional (2D) bilayer nanosheets of WO3@CoWO4 as highly efficient catalysts for enhanced photo, electro and photoelectro-chemical ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.