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Anatase Titanium Dioxide Crystallization by a Hydrolysis Reaction of Titanium Alkoxide without Annealing
Author(s) -
Funakoshi Kunio,
ami Toru
Publication year - 2006
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.1551-2916.2006.01011.x
Subject(s) - anatase , crystallinity , crystallization , alkoxide , titanium dioxide , titanium , supersaturation , acetylacetone , amorphous solid , nucleation , chemical engineering , materials science , inorganic chemistry , hydrolysis , annealing (glass) , chemistry , photocatalysis , organic chemistry , metallurgy , catalysis , composite material , engineering
The crystallization of anatase titanium dioxide (TiO 2 ) was achieved by a hydrolysis reaction of titanium alkoxide without annealing. The hydrolysis reaction rates of tetraethyl orthotitanate were indicated by a function of the concentration of acetylacetone added. The degree of crystallinity of the product particles was influenced by the amounts of acetylacetone and seed crystals. Anatase TiO 2 was crystallized by restraining the rapid increase in supersaturation of TiO 2 and the consequent nucleation of amorphous TiO 2 . The degree of crystallinity of the product particles also changed with the types of seed crystals used, and was strongly influenced by the specific surface areas of the seed crystals.