ACICULAR ANATASE-TYPE TiO2 NANOCRYSTAL ACCUMULATED GRAINS, POROUS ANATASE-TYPE TiO2 CRYSTAL FILM, AND METHOD FOR PRODUCING THE SAMES

摘要

PROBLEM TO BE SOLVED: To provide acicular anatase-type TiO₂ nanocrystal accumulated grains, a porous anatase-type TiO₂ crystal film, methods for producing those and usage thereof.;SOLUTION: In the method for producing the porous anatase-type TiO₂ crystal film, a solution process and a reaction system in which titanium oxide crystals deposit are used and anatase-type TiO₂ crystals are deposited on a substrate by changing the temperature, material concentration and/or pH condition of the reaction system to synthesize a porous anatase-type TiO₂ crystal film. In the method for producing the acicular anatase-type TiO₂ nanocrystal accumulated grains, a reaction system in which titanium oxide crystals deposit is used and acicular anatase-type TiO₂ nanocrystal accumulated grains dispersed in a solution are synthesized by changing the temperature, material concentration and/or pH condition of the reaction system. Products of those and an anatase-type TiO₂ crystal electronic device are also provided.;COPYRIGHT: (C)2009,JPO&INPIT