Ag Method for preparing titanium dioxide photocatalyst dopped silver and photocatalyst prepared thereby

摘要

(B) preparing a mixed solution containing titanium dioxide, a silver (Ag) precursor and a basic substance prepared in the step (a); (c) ) Doping the mixed solution with ultraviolet light to produce silver (Ag)-doped titanium dioxide; and (d) annealing the silver (Ag)-doped titanium dioxide. A method for producing a titanium dioxide photocatalyst is provided.According to the method for producing a titanium (Ag)-doped titanium dioxide photocatalyst according to the present invention, a basic substance is added to a mixed solution containing titanium dioxide and a silver (Ag) precursor for photodeposition, It is possible to dope silver (Ag) in a uniform state so that the electrons of titanium dioxide (e^-)-hole (h⁺) Pair (electron-hole pair, EHP), thereby lowering the activation energy required for photo-excitation. Thus, a titanium dioxide photocatalyst exhibiting excellent photoreaction characteristics in the visible light and ultraviolet region can be produced.