中文摘要：

利用水热法将通过hummer法制备得到氧化石墨烯包覆Zn O纳米颗粒,得到石墨烯/Zn O复合材料（简称Zn O@GR）.对复合材料的结构、形貌和光催化性能进行研究.在光催化降解亚甲基蓝（MB）的过程中,Zn O@GR展现出了好于纯Zn O粉末的光催化效果.这主要是由于Zn O与石墨烯复合之后,在紫外光的照射下,Zn O材料中产生的光生电子—空穴对中的电子迅速迁移到石墨烯材料中,大大降低了光生电子—空穴的复合几率,因而使复合材料的光催化降解性能提高.

英文摘要：

The Graphene / Zn O composites（ Zn O @ GR） were successfully synthesized by the hydrothermal method. Their structural and morphological properties were investigated by X-ray diffraction（ XRD）,transmission electron microscopy（ TEM） and Fourier transform infrared spectroscopy（ FTIR） techniques. Compared with Zn O and P25,the Zn O / GRs showed better photocatalytic performance for degradation of methylene blue dye（ MB）under irradiation of UV light,which was due to that the graphene sheets could prevent the photoinduced holeelectron pairs of Zn O from recombination by transferring the photoinduced electron to the MB. So the photocatalytic performance could be enhanced greatly.