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Oxygen‐Deficient Anatase Precipitated from High‐Temperature Plasma
Author(s) -
Kato Yoshikiyo,
Yokobayashi Hiroko,
Kasuya Atsuo,
Kagawa Masahiro,
Kawasaki Masashi
Publication year - 2004
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.1551-2916.2004.00166.x
Subject(s) - anatase , oxygen , rutile , argon , phase (matter) , adsorption , aqueous solution , materials science , chemistry , inorganic chemistry , analytical chemistry (journal) , chemical engineering , environmental chemistry , catalysis , biochemistry , organic chemistry , photocatalysis , engineering
Feeding atomized aqueous solutions containing TiCl 4 into an argon high‐temperature inductively coupled plasma (ICP) resulted in the formation of mixtures of white and blue particles. The mixtures consisted of anatase and an extra phase of rutile. Adding oxygen to the ICP led to the production of a single phase of white anatase. The blue particles could be characterized as oxygen‐deficient anatase. Electrophoretic mobility measurements indicated that Na+ participated in determining the surface potential of the mixtures. The oxygen defects may provide the adsorption sites to Na+.