Pt-Cu2O/TiO2复合催化剂的制备及光催化制氢活性

采用化学沉积法制备了Cu_2O/TiO_2复合光催化剂。通过扫描电子显微镜(SEM)、能谱分析(EDS)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、紫外-可见漫反射光谱(DRS)表征复合催化剂的微观形貌、元素组成、结构和光学特性。以H_2PtCl_6为无机前驱体对复合材料进行Pt负载,研究了不同Cu_2O含量对制氢活性的影响及不同光源下的制氢活性。结果表明,该复合催化剂表现出较好的光催化制氢活性,当Cu_2O的含量为1%(质量分数)时,氢气的产生量最高。

Preparation and Photocatalytic Activity for Hydrogen Evolution of Pt-Cu2O/TiO2 Composite Photocatalysts

Cu2 O/TiO2 composite photocatalysts were prepared by chemical precipitation method.The micro-morphology,element composition,structure and optical properties of the composite catalysts were characterized by scanning electron microscopy (SEM),energy disperse spectroscopy (EDS),X-ray diffraction (XRD),Fourier trans-form infrared spectroscopy (FT-IR),UV-Vis diffuse reflectance spectroscopy (DRS).The inorganic precursor of H2 PtCl6 was used to load Pt.The effects of the content of Cu2 O on hydrogen evolution activity under different irradia-tion were investigated.Results indicated that the composite photocatalysts have higher photocatalytic activity for hy-drogen production.When the content of Cu2 O was 1% (mass fraction),the amount of hydrogen was the highest.