The photocatalytic activity of GO-modified BiVO4 for the degradation of phenol under visible light irradiation

In recent years, using graphene to modify BiVO4 has become a research hotspot. However, there are few reports on the effects of the graphene size and the loading content on the photocatalytic activity of the graphene-modified BiVO4. In this work, a series of BiVO4 photocatalysts modified by oxide graphene (GO) of different sizes and loadings were prepared, characterized and their activities were investigated. The results showed that when the size of GO was 5-7 mu m and the loading was 0.5 wt%, the phenol degradation rate over the GO-modified BiVO 4 was the best and reached 65.2% after 5 h visible light irradiation.