采用水热法合成了石墨烯-TiO2纳米管复合材料,通过扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射(DRS)表征复合催化剂的微观形貌、结构和光学特性.以 H2 PtCl6为前驱体,对复合材料进行Pt负载,C2 H5 OH/H2 O 溶液为反应液,在紫外光和太阳光下考察其产氢活性,实验结果表明,石墨烯的负载量为5％(质量分数)时催化剂的产氢活性最高,紫外光下和太阳光下反应5 h,产氢量分别达到1069．299、3712．789μmol,远高于同等条件下P25的产氢活性.
Graphene-TiO2 nanotube composites were synthesized by hydrothermal method,the micromorpholo-gy,structure and optical properties of the composite catalysts were characterized by scanning electron microsco-py (SEM),transmission electron microscopy (TEM),X-ray diffraction (XRD),Fourier transform infrared (FT-IR),UV-Vis diffuse reflectance (DRS).Using H2 PtCl6 as precursor,Pt load of composite materials,the C2 H5 OH/H2 O solution as reaction liquid,to test the hydrogen production activity under UV light and sunlight irradition.The experimental results showed that the activity for hydrogen production was highest in which the content of grapheme was 5wt%.The amount of evolution H2 was 1 069.2988 μmol under the UV light and 3 712.789μmol under the sunlight irradtion for 5 h,whose activity for hydrogen production were much higher than that of P25 under same condition.
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