复合材料CdS／Al-HMS的制备及可见光催化降解污染物制氢活性研究  

Synthesis of Composite Material CdS/Al-HMS and Hydrogen Production by Photocatalytic Pollutant Degradation under Visible Light Irradiation

作　　者：张耀君[1] 张莉[2] 

机构地区：[1]西安建筑科技大学材料科学与工程学院,西安710055 [2]西安石油大学化学化工学院,西安710065

出　　处：《无机材料学报》2008年第1期66-70,共5页Journal of Inorganic Materials

基　　金：高等学校博士学科点专项科研基金(20050698034);教育部留学回国人员科研启动基金(200555)

摘　　要：采用模板法、离子交换法、沉淀法和浸渍法等多步反应合成了系列CdS/Al-HMS和负载的Pt/CdS/Al- HMS光催化复合材料;利用XRD、TEM、XRF及UV-Vis漫反射光谱等分析技术对其进行了表征;研究结果表明:CdS的复合量是影响CdS/Al-HMS复合材料结构的主要因素.当CdS复合量较低时,形成掺杂复合材料;当CdS复合量较高时,形成纳米复合材料.载6%Pt后的CdS/Al-HMS光催化复合材料降解甲酸的最高产氢速率为22.3mL/h,420nm处的表观量子产率为12%.A series of photocatalytically composite materials, CdS/Al-HMS and Pt/CdS/Al-HMS, were prepared by templete reagent, ion exchange, precipitation and impregnation methods. The photo- catalysts were characterized by using X-ray diffraction （XRD）, transmission electron microscope （TEM）, X-ray fluorescence analysis （XRF）, UV-Visible diffuse reflectance spectrum technology. The results show that the structure of the composite material CdS/Al-HMS mainly depends on the amount of CdS in Al-HMS. The doping composite material is formed with low content of CdS and the nanoscale composite material is produced with high content of CdS. The photocatalytic activities of hydrogen productions for coupled materials are carried out by photocatalytic formic acid degradation under visible light irradiation （A 〉420nm）. The result indicates that the composite material loaded 6% Pt shows the highest hydrogen generation rate of 22.3mL/h with an apparent quantum yield of 12% at the wavelength of 420nm.

关 键 词：复合材料 可见光催化降解污染物 甲酸 制氢 

分 类 号：TK511[动力工程及工程热物理—热能工程]