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Publication Detail
Photocatalytic evolution of hydrogen and oxygen from ceramic wafers of commercial titanias
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Elouali S, Mills A, Parkin IP, Bailey E, McMillan PF, Darr JA
  • Publisher:
    ELSEVIER SCIENCE SA
  • Publication date:
    15/12/2010
  • Pagination:
    110, 114
  • Journal:
    J PHOTOCH PHOTOBIO A
  • Volume:
    216
  • Issue:
    2-3
  • Print ISSN:
    1010-6030
  • Language:
    EN
  • Keywords:
    TiO2, Ceramic wafer, Water-splitting, Photocatalysis, VISIBLE-LIGHT, WATER, TIO2, PHOTOELECTRODES, CELLS
  • Addresses:
    Darr, JA
    UCL
    Dept Chem
    London
    WC1H 0AJ
    England
Abstract
Several commercial titania photocatalyst powders were formed into thin (ca. 350 mu m), 25 mm diameter ceramic wafers, sputter deposited with Pt on one side. The activities of each of the ceramic wafers were tested for hydrogen and oxygen evolution from aqueous sacrificial systems. The commercial sample PC50 (Millennium Chemicals, UK) yielded reproducible ceramic wafers with high activity for water photoreduction. Many of the ceramic wafers displayed low water photo-oxidation activities; however, these were greatly increased with addition of a NiO co-catalyst. In a selected case, hydrogen evolution activity was compared between a PC50 wafer and an identical weight of platinised PC50 powder suspension. (C) 2010 Elsevier B.V. All rights reserved.
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