复合光催化剂CdS-Pt/TiO_2低温制备及可见光制氢性能  

Preparation of CdS-Pt/TiO_2 composite photocatalyst by low temperature method and its performance for photocatalytic hydrogen evolution under visible light irradiation

作　　者：彭绍琴[1] 黄亚辉[1] 安然[1] 李越湘[1] 

机构地区：[1]南昌大学化学系,江西南昌330031

出　　处：《功能材料》2011年第9期1669-1672,共4页Journal of Functional Materials

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB220003);国家自然科学基金资助项目(20763006);长江学者和创新团队发展计划资助项目(IRT0730);江西省自然科学基金资助项目(2007GZH1754)

摘　　要：用不同方法制备了CdS-Pt/TiO2复合光催化剂。催化剂通过X射线衍射、比表面和紫外-可见漫反射吸收进行了表征。以可见光光解水制氢为探针反应,考察了CdS-Pt/TiO2复合光催化剂的可见光活性。结果表明制备方法极大地影响CdS-Pt/TiO2复合光催化剂的活性。低结晶度的CdS与Pt/TiO2复合形成的CdS-Pt/TiO2复合光催化剂具有最高的可见光活性,其光解水的量子效率为6.95%。CdS-Pt/TiO2 composite photocatalyst was prepared using a variety of methods.The photocatalysts were characterized by X-ray diffraction,BET,and UV-Vis absorption spectroscopic techniques.The photocatalytic activity of CdS-Pt/TiO2 composite under visible light（λ≥420nm） was evaluated by photocatalytic hydrogen evolution.It was found that the preparation method enormously influenced the activity of CdS-Pt/TiO2 composite.The CdS-Pt/TiO2 composite by low-crystalline CdS coupled with Pt/TiO2 had the highest activity and the apparent quantum yield amount was 6.95%.

关 键 词：CdS-Pt/TiO2 光催化 制氢 可见光 

分 类 号：O643[理学—物理化学]