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Modified, Amorphous Titania—A Hybrid Semiconductor for Detoxification and Current Generation by Visible Light
Author(s) -
Kisch Horst,
Zang Ling,
Lange Christian,
Maier Wilhelm F.,
Antonius Christina,
Meissner Dieter
Publication year - 1998
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19981116)37:21<3034::aid-anie3034>3.0.co;2-2
Subject(s) - photocatalysis , semiconductor , materials science , amorphous solid , visible spectrum , photocurrent , microporous material , platinum , photochemistry , chemical engineering , optoelectronics , nanotechnology , catalysis , chemistry , crystallography , organic chemistry , engineering , composite material
Amorphous, microporous TiO 2 hybrid semiconductors modified with transition metals induce generation of a photocurrent and photocatalytic degradation of the water contaminant 4‐chlorophenol through photoinduced charge separation (the postulated mechanism is shown in the picture, Ar=4‐ClC 6 H 4 ). In contrast to the previously known crystalline titania photocatalysts, which are active only when excited with UV light, the amorphous semiconductors modified with platinum, rhodium, and gold chloride enable both processes also with visible light.