Effect of synthesis methods on the photocatalytic DeNOx activity of CaAl2O4:(Eu, Nd)/TiO2-xNy composites

H. H. Li, S. Yin, T. Sato

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    2 Citations (Scopus)

    Abstract

    CaAl2O4:(Eu,Nd)/TiO2-xNy composites were synthesized via two different methods, i.e., a two-step method (solvothermal reaction followed by mechanochemical treatment) and a one-step method (direct solvothermal dispersion method), and the photocatalytic activities were evaluated for deNOx ability both under UV light (λ>290 nm) irradiation and after turning off the UV light. It was confirmed that TiO2-xNy nanoparticles with anatase phase could be uniformly dispersed on the surface of CaAl2O4:(Eu, Nd) by both method. However, the composites prepared by a one-step method possessed much larger specific surface areas, higher photocatalytic activity and more prolonged catalytic time after turning off the light than those by a two-step method, indicating that the solvothermal method is more appropriate for the synthesis of CaAl2O4:(Eu, Nd)/TiO2-xNy composite photocatalyst.

    Original languageEnglish
    Article number172003
    JournalIOP Conference Series: Materials Science and Engineering
    Volume18
    Issue numberSYMPOSIUM 11
    DOIs
    Publication statusPublished - 2011
    Event3rd International Congress on Ceramics, ICC 2011 - Osaka, Japan
    Duration: 2010 Nov 142010 Nov 18

    ASJC Scopus subject areas

    • Materials Science(all)
    • Engineering(all)

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