Effects of dye mixing on photocatalytic splitting of H2O into H2 and O2 on KTaO3

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Abstract

Effects of mixing dye sensitizer for the photocatalytic activity of dye-sensitized Pt/K0.95Ta0.92Zr0.08O 3 was investigated. It was found that the photocatalytic activity was greatly improved by mixing dye sensitizer on the catalyst, and among the examined combination of organic dyes, the highest photocatalytic activity was obtained by mixing Cr-tetraphenylporphyrin (Cr-TPP) and Pentametylene bis[4-(10, 15, 20-triphenylporphine-5-yl)benzoate] dizinc(II) (Zn-TPP dimer). In order to identify the effect of dye sensitizer, photovoltaic behavior of the dye-sensitized KTaO3 was investigated. The lifetime of the photo-exited electron and hole can be improved by coating with dye sensitizer. Thus, the effect of porphyrinoids would be explained by the improved efficiency of charge separation.

Original languageEnglish
Title of host publicationEco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design
Pages51-54
Number of pages4
Publication statusPublished - Dec 1 2007
Event8th International Symposium on Eco-Materials Processing and Design, ISEPD-8 - Kitakyushu, Japan
Duration: Jan 11 2007Jan 13 2007

Publication series

NameMaterials Science Forum
Volume544-545
ISSN (Print)0255-5476

Other

Other8th International Symposium on Eco-Materials Processing and Design, ISEPD-8
CountryJapan
CityKitakyushu
Period1/11/071/13/07

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Hagiwara, H., Matsumoto, H., & Ishihara, T. (2007). Effects of dye mixing on photocatalytic splitting of H2O into H2 and O2 on KTaO3. In Eco-Materials Processing and Design VIII - ISEPD-8, Proceedings of the 8th International Symposium on Eco-Materials Processing and Design (pp. 51-54). (Materials Science Forum; Vol. 544-545).