College of Chemistry and Chemical Engineering, Northwest Normal University, Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Key Laboratory of Gansu Polymer Materials, Lanzhou 730070, China.
J Photochem Photobiol B. 2013 Sep 5;126:47-54. doi: 10.1016/j.jphotobiol.2013.07.007. Epub 2013 Jul 10.
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.
一种新型的生物聚合物-金属配合物羊毛-Pd/CdS 光催化剂被制备出来，并在可见光照射下表现出对 RhB 的高效光降解活性。羊毛-Pd 不仅可以提高贵金属 Pd 的利用率，而且可以显著提高染料降解的活性。羊毛-Pd 可以引入 Pd 和 PdS，有效地阻止光生电子和空穴的复合。在光催化剂中，羊毛-Pd 的最佳重量百分比被发现为 0.5wt%，这使得 RhB 在可见光下的降解效果良好。它的催化效率明显优于纯 CdS。通过 X 射线衍射、漫反射紫外可见光谱、能谱（EDX）、X 射线光电子能谱（XPS）研究、透射电子显微镜（TEM）对光催化剂进行了表征。总之，所制备的新型生物聚合物-金属配合物羊毛-Pd/CdS 光催化剂不仅提高了 RhB 的降解效率，而且具有良好的回收和经济优势。它将具有良好的应用前景。此外，本文还提出了 RhB 的可能降解途径。
