Direct synthesis of brookite-type titanium oxide by hydrothermal method using water-soluble titanium complexes
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It was demonstrated that brookite-type titanium oxide can be directly synthesized by the hydrothermal treatment of novel water-soluble titanium complexes under basic conditions in the presence of an additive. In particular, single-phase brookite was synthesized from the titanium–glycolate complex at a pH of about 10 in the presence of excess NH3 aqueous solution or ethylenediamine, and powder thus obtained consisted of rod-like nanosized particles. It was suggested that the structures of titanium complexes are important for the formation of brookite.
KeywordsRutile Malic Acid Tartaric Acid Hydrothermal Treatment Glycolic Acid
We are grateful for support by a CREST/JST grant. Part of this work was also supported by a Grant in Aid for Science Research, No. 18206069 from the Ministry of Education, Science and Culture, Japan.
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