复合光催化剂CdS-Pt/TiO_2低温制备及可见光制氢性能

功能材料, 2011, 42(9): 1669-1672.

复合光催化剂CdS-Pt/TiO_2低温制备及可见光制氢性能

1.南昌大学化学系,江西南昌330031

2.南昌大学化学系,江西南昌330031

3.南昌大学化学系,江西南昌330031

4.南昌大学化学系,江西南昌330031

基金项目: 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) 国家自然科学基金资助项目(20763006) 国家重点基础研究发展计划(973计划)资助项目(2009CB220003)

关键词： CdS-Pt/TiO2 , 光催化 , 制氢 , 可见光

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

Keywords： CdS-Pt/TiO2 , photocatalyst , hydrogen evolution , visible light

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%.

参考文献

[1]	Fujii H.;Eguchi K.;Arai H.;Ohtaki M. .Preparation and photocatalytic activities of a semiconductor composite of CdS embedded in a TiO2 gel as a stable oxide semiconducting matrix[J].Journal of molecular catalysis, A. Chemical,1998(1):61-68.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网