Affiliation:
1. Toyota Central R&D Laboratories, Nagakute, Aichi 480-1192, Japan.
Abstract
To use solar irradiation or interior lighting efficiently, we sought a photocatalyst with high reactivity under visible light. Films and powders of TiO
2-
x
N
x
have revealed an improvement over titanium dioxide (TiO
2
) 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 TiO
2
has proven to be indispensable for band-gap narrowing and photocatalytic activity, as assessed by first-principles calculations and x-ray photoemission spectroscopy.
Publisher
American Association for the Advancement of Science (AAAS)
Cited by
11545 articles.
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