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Transparent Anatase Nanocomposite Films by the Sol–Gel Process at Low Temperatures
Author(s) -
Matsuda Atsunori,
Kotani Yoshinori,
Kogure Toshihiro,
Tatsumisago Masahiro,
Minami Tsutomu
Publication year - 2000
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2000.tb01178.x
Subject(s) - anatase , nanocomposite , materials science , sol gel , chemical engineering , ethylene glycol , polymer , coating , nanocrystal , photocatalysis , thin film , nanotechnology , composite material , organic chemistry , chemistry , catalysis , engineering
We have successfully prepared transparent anatase nanocomposite films on various types of substrates, including organic polymers, using the sol–gel method at temperatures <100°C under ambient pressure. This novel process is based on the findings that (i) anatase nanocrystals are uniquely formed in sol–gel‐derived SiO 2 –TiO 2 films that have been subjected to a hot‐water treatment, and (ii) the addition of an organic polymer such as poly(ethylene glycol) in the films accelerates the formation of anatase nanocrystals. The film coating on the substrates is a promising candidate for use as a photocatalyst to decompose environmental pollutants and harmful microorganisms.