Res. Chem. Intermed.
, Vol. 34, No. 4, pp. 365–374 (2008)
Koninklijke Brill NV, Leiden, 2008.
Also available online - www.brill.nl/rci
Generation of low-molecular-weight organic compounds in
water by titania photocatalyst under UV-Vis light
, MITSUHARU FUKAYA and HIROSHI TAODA
Ecological Ceramics Group, Materials Research Institute for Sustainable Development,
National Institute of Advanced Industrial Science and Technology (AIST) Chubu, Nagoya, Japan
Received 27 April 2007; accepted 31 August 2007
Abstract—We attempted to develop a new type titania photocatalyst that, when activated, responded
in not only the ultraviolet rays region but also visible light radiation region by the new titania
photocatalyst with the zirconia and nitrogen simultaneously introduced in the titania lattice. The
decomposition performance of the standard organic compound in water by this new type titania
photocatalyst nanoparticle was compared with the conventional type under both the ultraviolet ray and
visible light radiation conditions. It was suggested that the low-molecular-weight organic compounds
were also generated from the organic compound in water by the new type titania photocatalyst
activities under the visible light radiation.
Keywords: Photocatalyst; titania; UV; visible light; low-molecular-weight organic compound.
The development of the environmental puriﬁcation technology using the titania
photocatalyst is remarkable, and the application is widely commercialized in
various ﬁelds [1 –8]. However, the titania photocatalyst that is practical use mainly
responds only in the ultraviolet rays region, so that the application areas were
limited. Thus, the performance of the titania photocatalyst of the visible response
type recently developed was not enough yet.
Therefore, we were attempted to develop the new type titania photocatalyst that
activated to respond in not only the ultraviolet rays region but also visible light
radiation region by the new method of the zirconia and nitrogen introduced in the
titania lattice for the applications to puriﬁcation treatment etc.
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