Karunakaran C, Dhanalakshmi R, Anilkumar P
Department of Chemistry, Annamalai University, Annamalainagar, Tamilnadu, India.
J Hazard Mater. 2009 Aug 15;167(1-3):664-8. doi: 10.1016/j.jhazmat.2009.01.034. Epub 2009 Jan 19.
Under UV light, phenol degrades on the surface of Y(2)O(3), an insulator, and the degradation follows first-order kinetics, depends linearly on the light intensity and slows down with pH. The efficiency of degradation is higher with UV-C light than with UV-A light. While particulate anatase TiO(2), ZnO, ZnS, Fe(2)O(3), CuO, CdO, and Nb(2)O(5) individually photodegrade phenol, each semiconductor shows synergism when present along with Y(2)O(3), indicating electron-transfer from phenol adsorbed on Y(2)O(3) to the illuminated semiconductors.
在紫外光下，苯酚在绝缘体Y₂O₃表面降解，降解遵循一级动力学，与光强呈线性关系，并随pH值降低。紫外-C光的降解效率高于紫外-A光。虽然颗粒状锐钛矿型TiO₂、ZnO、ZnS、Fe₂O₃、CuO、CdO和Nb₂O₅单独光降解苯酚，但当与Y₂O₃一起存在时，每种半导体都表现出协同作用，这表明吸附在Y₂O₃上的苯酚向受光照的半导体发生了电子转移。
