▎ 摘　　要

In this article, we report a titanium dioxide-graphene (TiO2-CD-GN) composite from TiO(2)and reduced graphene oxide (rGO) using a new green method. TiO2 nanoparticles are anchored onto graphene nanosheets (GNs) through -cyclodextrin (CD) molecules using sun light irradiation. In this method, graphene is directly incorporated as rGO rather than GO into the composite. The prepared TiO2-CD-GNs exhibits reduced charge recombination compared to that of the bare TiO2, indicating effective charge separation. The composite with 0.5% of rGO (TiO2-CD-GNs0.5) shows approximate to 3 times higher activity to that of the bare TiO2 for the photodegradation of methylene blue. The TiO2-CD-GNs0.5 displays enhanced electron transfer. In the visible light photodegradation of 4-chlorophenol, TiO2-CD-GNs1 exhibits the highest photocatalytic activity compared to that of the composites and bare TiO2. Catalytic activity of the reused catalyst remains the same (62% of the initial value) from the second cycle to the next 7 cycles studied. (c) 2016 American Institute of Chemical Engineers Environ Prog, 35: 1283-1292, 2016