Visible-light-induced photocatalytic activity of TiO2-xNy prepared by solvothermal process in urea-alcohol system

S. Yin, Y. Aita, M. Komatsu, T. Sato

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)


Nitrogen-doped anatase, rutile and brookite titania photocatalyst TiO2-xNy which can be excited by visible light were prepared by mixing aqueous TiCl3 solutions with urea ((NH2)2CO) and various type of alcohols followed by solvothermal treatment at 190 °C. The phase composition, crystallinity, microstructure and specific surface area of titania powders greatly changed depending on the pH and type of solvents. Violet, yellowish and grayish TiO2-xNy with excellent visible light absorption and photocatalytic activity were prepared. The TiO2-xNy powders prepared in urea-methanol solution showed excellent photocatalytic ability for the oxidative destruction of nitrogen monoxide under irradiation of visible light λ > 510 nm.

Original languageEnglish
Pages (from-to)2735-2742
Number of pages8
JournalJournal of the European Ceramic Society
Issue number13
Publication statusPublished - 2006


  • Chemical properties
  • Photocatalyst
  • Powders-chemical preparation
  • TiO

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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