TiO2계 나노 복합촉매 특성에 미치는 생성상의 영향

Abstract

In the present study, TiO2 imbedded composite powders have been successfully prepared from the (Cu, Zn)/TiO2 composite salt solution. The composite (Cu, Zn)/TiO2 powders were formed by drying the solution at 200~600oC in the hydrogen atmosphere. Photocatalytic characteristics was evaluated by detecting the decomposition ratio of aniline blue with UV-visible spectrophotometer(Shimazu Co., UV-1601). Phase analysis of (Cu, Zn)/TiO2 composite powders was carried out by XRD and DSC, and powder size was measured with TEM. The mean particle size of composite powders was about 100nm. As the reduction temperature increases, a few zinc sulfide and oxide phases was formed and copper oxide phase was reduced. The decomposition ratio of aniline blue was about 80% under the UV irradiation by the TiO2 phase in the composite (Cu, Zn)/TiO2 powders and similar decomposition ratio of 80% was obtained at the UV lightless condition by virtue of Cu and Zn compounds.