【作者】 张伟； 彭绍琴； 李越湘； 吕功煊； 李树本；

【Author】 ZHANG Wei~1 PENG Shao-qin~1 LI Yue-xiang~1 LV Gong-xuan~2 LI Shu-ben~2 (1.Department of Chemistry,Nanchang University,Nanchang 330047,China;2.State Key Laboratory for Oxo Synthesis and Selective Oxidation,LanzhouInstitute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China)

【机构】 南昌大学化学系； 中国科学院兰州化学物理研究所羰基合成与选择氧化国家重点实验室；

【摘要】 用光还原方法制备了负载 Cu 的光催化剂 Cu-TiO₂,并通过染料 Rose bengal 敏化,制备了具有可见光活性的 Rose bengal-Cu-TiO₂光催化剂,通过可见光下光解水制氢考察了催化剂的活性,并利用 XRD、UV-Vis 等手段对样品进行了表征．实验表明：载 Cu 增强了 TiO₂ 对可见光的吸收,Cu 负载量对催化剂活性有一定的影响,Cu 的最佳负载量为5％（质量分数）．Cu 的负载也增加了 TiO₂对染料的吸附强度和吸附量,从而提高了 TiO₂对可见光的吸收和光催化活性．但载 Cu 的 TiO₂ 催化剂的活性和传统的载贵金属 Pt 的 TiO₂催化剂相比,其光催化活性较低,有待进一步提高．更多还原

【Abstract】 The photocatalyst Cu-ZiO₂ was prepared by the method of light deoxidize.By dye-sensitization with rose bengal as sensitizer,we prepare the photocatalyst Rose bengal-Cu/TiO₂ which has photoactivity under visible light.The photocatalytic activities of the catalysts were investigated by the photocatalytic hydrogen generation from water under visible light,and The photocatalyst were characterized by means of X-ray diffraction and UV-Vis absorption spectra.The result indicate that loading Cu enhance TiO₂ adsorption to visible light.Amount of loading Cu has some influence on the photocatalytic activity of photocatalyst,the optimal amount of Cu loading were 5wt%.The adsorption amount and intensity of Cu-TiO₂ photocatalyst to dye rose bengal were enhanced compare with the pure TiO₂,so the adsorption to visible light and photocatalytic activity of Cu-TiO₂ were improved,but its photocatalytic activity was lower than Pt-TiO₂ photocatalyst and need to be improved.更多还原