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Visible‐Light Photocatalysis in Titania‐Based Mesoporous Thin Films
Author(s) -
Soni Saurabh S.,
Henderson Mark J.,
Bardeau JeanFrançois,
Gibaud Alain
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200701066
Subject(s) - materials science , photodegradation , photocatalysis , mesoporous material , nanocrystalline material , visible spectrum , thin film , methylene blue , thiourea , doping , irradiation , nanotechnology , chemical engineering , photochemistry , optoelectronics , catalysis , organic chemistry , chemistry , physics , nuclear physics , engineering
Photocatalytic activity in the visible part of the solar spectrum (442 nm) is demonstrated for highly organized mesoporous nanocrystalline titania thin films doped with thiourea. This property, which is of interest for the further development of photovoltaic devices operating in sunlight, is revealed by monitoring the photodegradation of methylene blue (see figure) upon contact with an N‐doped TiO 2 film as a function of irradiation time and film thickness.