COPPER ION-MODIFIED TITANIUM OXIDE, METHOD FOR PRODUCING THE SAME, AND PHOTOCATALYST

摘要

PROBLEM TO BE SOLVED: To provide a copper-modified titanium oxide capable of developing good catalytic activity under visible light irradiation when it is used as a photocatalyst, a method for producing the same, and a photocatalyst essentially comprising the copper ion-modified titanium oxide. SOLUTION: The copper ion-modified titanium oxide has a surface modified with copper ions and includes a brookite-type crystal. The method for producing the copper ion-modified titanium oxide includes: the hydrolysis step of hydrolyzing a titanium compound which produces titanium oxide in a reaction solution; and the surface modification step of mixing an aqueous solution containing copper ions with the solution after hydrolysis and performing surface modification of titanium oxide. The photocatalyst contains 70 mass% or more of the copper ion-modified titanium oxide. COPYRIGHT: (C)2011,JPO&INPIT