Abstract
In this study, ZnTPP-ZnO composite photocatalyst was prepared by impregnation method, and the samples prepared were characterized and analyzed by UV-Vis technology and TEM technology. The effects of light duration and ZnTPP loading on the photocatalytic degradation of methyl orange by ZnO were investigated. The experimental results show that ZnTPP is mainly loaded on the surface of ZnO particles in the form of surface adsorption, and plays the role of generating excited electrons and transferring electrons in photocatalysis. The degradation of methyl orange by the composite photocatalyst is mainly due to the photodegradation and the absorption peak is blue shift. The longer the light duration, the more degradation of methyl orange; The photocatalytic activity of ZnO is the highest when the sensitizer loading is 6 µmol.
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