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g-C3N4 coated SrTiO3 as an efficient photocatalyst for H2 production in aqueous solution under visible light irradiation

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Author(s)

Xiaoxiang Xu, Gang Liu, Chamnan Randorn, John Thomas Sirr Irvine

School/Research organisations

Abstract

A highly active photocatalyst based on g-C3N4 coated SrTiO3 has been synthesized simply by decomposing urea in the presence of SrTiO3 at 400 °C. The catalyst demonstrates a high H2 production rate ∼440 μmol h−1/g catalyst in aqueous solution under visible light irradiation, which is much higher than conventional anion doped SrTiO3 or physical mixtures of g-C3N4 and SrTiO3. The improved photocatalytic activity can be ascribed to the close interfacial connections between g-C3N4 and SrTiO3 where photo-generated electron and holes are effectively separated. The newly synthesized catalyst also exhibited a stable performance in the repeated experiments.
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Original languageEnglish
Pages (from-to)13501-13507
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number21
DOIs
Publication statusPublished - 2011

    Research areas

  • Carbon nitride, Photocatalyst, Visible light, SrTiO3

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