▎ 摘　　要

Trirutile-structured pentavalent zinc bismuthate (ZnBi2O6) has efficient visible light photocatalytic activities owing to its narrow gap (ca. 1.7 eV). To obtain higher photocatalytic performance, graphene oxide (GO) is introduced into this catalyst. In my work, novel ZnBi2O6-graphene (ZnBi2O6-GO) nanocomposites have been successfully obtained via a one-step hydrothermal method. The characterization results showed that GO was successfully loaded in the ZnBi2O6. In the photocatalytic experiment, ZnBi2O6-GO composites exhibited better photocatalytic activities than the pure ZnBi2O6 and the optimal photocatalytic activity was obtained when the GO content was 2.0 wt%. The main reason for enhanced photocatalytic activity is that introduction of GO can restrain the recombination of photo-generated electron-hole pairs and increase the absorption ability for dyes.