中文摘要：

为了提高TiO2光解水制氢的光催化性能,通过水热合成法一步制备了S掺杂TiO2/石墨烯（RGO）复合催化剂。采用XRD、XPS、FT-IR、TEM、UV-Vis等测试方法对其进行了表征,并研究了复合催化剂光催化分解水制氢性能。结果表明,在S-TiO2/RGO复合催化剂中,TiO2以14nm左右的纳米颗粒分散在石墨烯片层上;与同等条件下制备的TiO2相比,复合催化剂在可见光区的吸收明显增强;当m（S）∶m（RGO）∶m（TiO2）为1∶0.1∶25时,所制备的复合催化剂在同等条件下产氢速率最大,为141.7μmol/h。

英文摘要：

In order to improve the photocatalytic performance of TiO2 for splitting water to get hydrogen,S doped TiO2/graphene composites（S-TiO2/RGO）were prepared with a one-step hydrothermal method in the paper.The prepared photocatalysts were characterized by XRD,XPS,FT-IR,TEM,UV-Vis testing techniques.In addition,the photocatalytic activity for splitting water of the prepared photocatalysts was investigated.The results showed that TiO2 particles with size of 14 nm were dispersed on the surface of graphene sheets uniformly in the S-TiO2/RGO composite.Compared with TiO2 prepared under the same condition,the absorption of S-TiO2/RGO composite in the visible region was significantly enhanced.When S∶RGO∶TiO2of mass ratio is 1∶0.1∶25,the rate of hydrogen production is up to 141.7μmol/h with composite photocatalysts.