Jump to main content
Jump to site search

Issue 11, 2002
Previous Article Next Article

Spectral and photocatalytic characteristics of TiO2 CVD films on quartz

Author affiliations

Abstract

A series of novel CVD films of titanium(IV) oxide of different thicknesses, spanning the range 10–91 nm, are prepared on quartz, via the reaction of titanium(IV) chloride and ethyl acetate, using a CVD technique. The films are clear, mechanically robust and comprise thin layer of nanocrystalline anatase titania of different thicknesses that absorb UV light. The UV–Visible spectral profiles of all the CVD TiO2 films of different thickness are the same and obey Lambert's law (absorbance ∝ film thickness). A plot of the reciprocal length for the TiO2 coating versus wavelength is reported. The photocatalytic activity of each film to mediate the destruction of a thin layer of stearic acid is investigated. The rate depends directly upon the fraction of light absorbed and the apparent quantum yield for the overall process is 0.00035, which appears low compared with that for sol–gel TiO2 films.

Graphical abstract: Spectral and photocatalytic characteristics of TiO2 CVD films on quartz

Back to tab navigation

Publication details

The article was received on 13 Jun 2002, accepted on 10 Jul 2002 and first published on 25 Sep 2002


Article type: Paper
DOI: 10.1039/B205715H
Citation: Photochem. Photobiol. Sci., 2002,1, 865-868
  •   Request permissions

    Spectral and photocatalytic characteristics of TiO2 CVD films on quartz

    A. Mills, S. Lee, A. Lepre, I. P. Parkin and S. A. O'Neill, Photochem. Photobiol. Sci., 2002, 1, 865
    DOI: 10.1039/B205715H

Search articles by author

Spotlight

Advertisements