Report

Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides

Science  13 Jul 2001:
Vol. 293, Issue 5528, pp. 269-271
DOI: 10.1126/science.1061051

You are currently viewing the abstract.

View Full Text

Via your Institution

Log in through your institution

Log in through your institution


Abstract

To use solar irradiation or interior lighting efficiently, we sought a photocatalyst with high reactivity under visible light. Films and powders of TiO2-xNxhave revealed an improvement over titanium dioxide (TiO2) under visible light (wavelength < 500 nanometers) in optical absorption and photocatalytic activity such as photodegradations of methylene blue and gaseous acetaldehyde and hydrophilicity of the film surface. Nitrogen doped into substitutional sites of TiO2 has proven to be indispensable for band-gap narrowing and photocatalytic activity, as assessed by first-principles calculations and x-ray photoemission spectroscopy.

  • * To whom correspondence should be addressed. E-mail: rasahi{at}mosk.tytlabs.co.jp

View Full Text

Related Content