Study on the Fabrication of Ag Doped ZnO-TiO_(2)Hybrid Photocatalyst with Excellent Photocatalytic Activity and Its Photocatalytic Decarboxylation Performance

摘要

Photocatalyst Ag/ZnO-TiO_(2)was prepared by template method.The catalyst was characterized by XRD,SEM,and UVvis DRS.Rhodamine B(RhB)and target pollutants were used to evaluate the photocatalytic performance of the catalyst under 40W UV-lamp.The photocatalytic degradation mechanism of Rhodamine B was discussed through free radical quenching experiment.The experimental results show that hexagonal ZnO-TiO_(2)can be successfully prepared by template method,and nano Ag particles are evenly loaded on the catalyst.Under the reaction conditions of 1%catalyst input and 40W UV-lamp,the catalytic degradation rate of RhB by Ag/ZnO-TiO_(2)was 98.28%.The photocatalytic degradation mechanism of Ag/ZnO-TiO_(2)was explored by free radical quenching experiment.The experimental results show that H+and·OH play a major role in the photocatalytic degradation of RhB by Ag/ZnO-TiO_(2).