TITLE:
New Preparation Method of Visible Light Responsive Titanium Dioxide Photocatalytic Films
AUTHORS:
Kaori Nishizawa, Masahisa Okada, Eiji Watanabe
KEYWORDS:
Titanium Dioxide Films; Sol-Gel Method; UV Irradiation; Visible Light Responsive Photocatalyst
JOURNAL NAME:
Materials Sciences and Applications,
Vol.5 No.3,
March
11,
2014
ABSTRACT: We report a new and simple preparation method of the visible light responsive Titanium dioxide (TiO2) photocatalytic films using sol-gel method and ultraviolet light (UV) irradiation. Proposed films were prepared on fused silica plates using titanium tetra-isopropoxide, urea, 2-methoxyethanol, water and UV irradiation. The 650°C-annealed films were carbon-containing anatase type TiO2, not carbon-doped ones. The prepared films absorbed visible light with wavelengths longer than 400 nm. Also, organic dyes were effectively photodegradated by visible light irradiation in the presence of these films.