▎ 摘　　要

Novel dandelion-like SnO2 microspheres have been successfully synthesized on graphene oxide sheets (GOs) by the hydrothermal method. The morphologies and optical properties of the SnO2 microspheres on GOs (SMGs) were characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM), Raman spectra and UV vis diffuse reflectance spectra (DRS) techniques. The results of XRD revealed that the as-grown SnO2 microspheres have tetragonal rutile structure. The results of Raman spectra and SEM showed that the SnO2 microspheres were grown on GOs. The photocatalytic activity of the SMGs composites was evaluated by photocatalytic degradation of Rhodamine B (Rh B) aqueous solution under visible light irradiation. The photocatalytic results showed that the dandelion-like SMGs exhibited a much better photocatalytic activity than those of smooth and rough SMGs. (C) 2015 Elsevier B.V. All rights reserved.