▎ 摘　　要

We demonstrate the design and fabrication of graphene-TiO2 nanocomposites (graphene-TiO2 nanotubes and graphene-TiO2 nanofibers) prepared by using a hybrid synthetic strategy. Graphene-TiO2 nanotubes show higher photocatalytic efficiency than graphene-TiO2 nanolibers and the bare TiO2 nanomaterials under visible light irradiation for degradation of rhodamine B (RhB), which is arising from the light trapping effect and the incorporation of graphene. Graphene can promote the separation and transportation of photo generated carriers in graphene-TiO2 nanotubes due to its excellent electrical property. Moreover, it is found that graphene-TiO2 nanotubes prepared by hydrothermal treatment for 3 h yield he best photocatalytic performance. (C) 2014 Elsevier Ltd. All rights reserved.