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	Photocatalytic degradation of rhodamine B by dye-sensitized TiO2 under visible-light irradiation
	Shang, Jing ; Zhao, Fengwei ; Zhu, Tong ; Li, Jia
	2011
英文摘要	Perylene tetracarboxylic diimide (PTCDI), widely used in organic photovoltaic devices, is an n-type semiconductor with strong absorption in the visible-light spectrum. There has been almost no study of the PTCDI-sensitized TiO2 composite used to photocatalytically degrade pollutants. In this study, PTCDI- and copper phthalocyanine tetrasulfonic acid (CuPcTs)-sensitized TiO2 composites were prepared using a hydrothermal method. The morphologies and structures of the two composites were characterized by X-ray diffraction, transmission electron microscopy, ultraviolet-visible spectroscopy, and fluorescence spectroscopy. The visible-light photocatalytic activities of the composites were evaluated using the degradation of rhodamine B as a model reaction. Results showed that dye-sensitized TiO2 samples had a wider absorption spectrum range and higher visible-light photocatalytic activity compared to TiO2 samples. The double dye-sensitized (or co-sensitized) TiO2 composite with efficient electron collection exhibited higher photocatalytic activity than did the single dye-sensitized TiO2 composite. The electron transfer processes of single and double dye-sensitized TiO2 composites were illustrated according to band theory. ? 2010 Science China Press and Springer-Verlag Berlin Heidelberg.; EI; 1; 167-172; 54
语种	英语
DOI标识	10.1007/s11426-010-4168-8
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/461764]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Shang, Jing,Zhao, Fengwei,Zhu, Tong,et al. Photocatalytic degradation of rhodamine B by dye-sensitized TiO2 under visible-light irradiation. 2011-01-01.

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