POTASSIUM NIOBATE PHOTOCATALYST AND MANUFACTURING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a potassium niobate photocatalyst having a high hydrogen gas generation speed. SOLUTION: The photocatalyst is composed of fine particles comprising nickel oxide-carried potassium niobate compound of which the basic structure is represented by general formula: Nb2 O5 /xK2 /yNiO (wherein x is the number of 0.6 to 1 and y is the number of 0 to less than 0.5) obtained by carrying nickel on potassium niobate obtained by treating niobium oxide and an aqueous potassium hydroxide solution at a high temperature of 300 deg.C to 450 deg.C, by photoreducing and calcining.