Photodegradation of textile dye Rhodamine B over a novel biopolymer-metal complex wool-Pd/CdS photocatalysts under visible light irradiation.

A novel biopolymer-metal complex wool-Pd/CdS photocatalysts were prepared and exhibited high activity for photodegradation of Rh B under visible light irradiation. The wool-Pd could not only enhance the utilization rate of noble metal Pd but also significantly improve the activity of dye degradation. Wool-Pd was able to introduce Pd and PdS to effectively prohibit the recombination of photogenerated electrons and holes. The optimal weight percentage of wool-Pd in the photocatalyst was found to be 0.5wt%, which resulted in a good result of degradation of Rh B under visible light. It is obviously better in the catalyst efficiency than pure CdS. The photocatalysts were characterized by X-ray diffraction, diffuse reflectance UV-vis spectroscopy, energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopic (XPS) studies, transmission electron microscopy (TEM). In a word, the prepared novel biopolymer-metal complex wool-Pd/CdS photocatalysts not only improve the degradation efficiency of Rh B, but also has a good advantage of recycling and cost-effective. It will have a good application prospect. In addition, the possible degradation pathway of Rh B was proposed in this paper. Copyright © 2013 Elsevier B.V. All rights reserved.

Citation

Qizhao Wang, Jiajia Li, Yan Bai, Xiaolin Lu, Yaming Ding, Shuqun Yin, Haohao Huang, Hengchang Ma, Fangping Wang, Bitao Su. Photodegradation of textile dye Rhodamine B over a novel biopolymer-metal complex wool-Pd/CdS photocatalysts under visible light irradiation. Journal of photochemistry and photobiology. B, Biology. 2013 Sep 5;126:47-54

PMID: 23895864

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