Ai Zhihui, Yang Peng, Lu Xiaohua
Environmental Science Research Institute, Huazhong University of Science and Technology (HUST), Wuhan 430074, PR China.
J Hazard Mater. 2005 Sep 30;124(1-3):147-52. doi: 10.1016/j.jhazmat.2005.04.027.
In this work, the degradation of 4-chlorophenol (4CP) under simultaneous microwave assisted UV (electrodeless discharge lamp) photocatalysis technique (MW/UV/TiO2) was investigated. Several factors affecting the degradation of 4CP by MW/UV/TiO2 method, such as the dosage of photocatalysts, the initial pH value of the solutions, gas bubbling, light intensity and addition of H2O2 oxidant, were studied in detail. The synergistic effects between microwave irradiation and TiO2 photocatalysis were also studied. The major intermediates were found to be chlorobenzene, phenol, hydroquinone, benzoquinone and 4-chlorocatechol. Based on the results, a general reaction pathway for the degradation of 4CP was proposed.
在本研究中，考察了在微波辅助紫外光（无极放电灯）同时光催化技术（MW/UV/TiO₂）作用下4-氯苯酚（4CP）的降解情况。详细研究了诸如光催化剂用量、溶液初始pH值、气体鼓泡、光强以及H₂O₂氧化剂添加量等影响MW/UV/TiO₂法降解4CP的多种因素。还研究了微波辐射与TiO₂光催化之间的协同效应。发现主要中间产物为氯苯、苯酚、对苯二酚、苯醌和4-氯邻苯二酚。基于这些结果，提出了4CP降解的一般反应途径。
