Dye sensitized CO2 reduction over pure and platinized TiO2

Ozcan O., Yukruk F., Akkaya E. U., Uner D.

TOPICS IN CATALYSIS, cilt.44, sa.4, ss.523-528, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 44 Sayı: 4
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1007/s11244-006-0100-z
  • Dergi Adı: TOPICS IN CATALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.523-528
  • Anahtar Kelimeler: artificial photosynthesis, TiO2, platinum, dye sensitizer, perylene diimide., INTERNAL ELECTRON-EMISSION, VISIBLE-LIGHT IRRADIATION, PHOTOCATALYTIC REDUCTION, H2O, WATER, PHOTOREDUCTION, CATALYSTS, DIOXIDE, OXIDATION, TITANIA
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

TiO2 thin and thick films promoted with platinum and organic sensitizers including novel perylene diimide dyes (PDI) were prepared and tested for carbon dioxide reduction with water under visible light. TiO2 films were prepared by a dip coating sol-gel technique. Pt was incorporated on TiO2 surface by wet impregnation [Pt(on).TiO2], or in the TiO2 film [Pt(in).TiO2] by adding the precursor in the sol. When tris (2,2'-bipyridyl) ruthenium(II) chloride hexahydrate was used as sensitizer, in addition to visible light activity towards methane production, H-2 evolution was also observed. Perylene diimide derivatives used in this study have shown light harvesting capability similar to the tris (2,2'-bipyridyl) ruthenium(II) chloride hexahydrate.