半导体材料联合超声用于降解有机污染物研究进展
Research Progress of the Combined Use of Ultrasonic and Semiconductor Materials in Organic Pollutants Degra-dation.
摘要 由于传统废水处理方法的效果不理想,近年来出现了多种污水处理新技术.超声降解法是一种先进的水体净化手段,其原理主要是基于超声照射后引起的空化效应.二氧化钛、氧化锌等半导体材料具有超大的比表面积、高反应性、光敏性和声敏性,因此也被用于污水处理.为了寻求更有效的污水处理方法,综述了半导体材料与超声联合用于污水处理方面的文献进展,包括半导体材料种类及降解活性影响因素,比如超声照射时间、污染物浓度、溶液温度、溶液pH值、声催化剂用量及其晶型等.综合分析发现,由上转光剂与不同带隙半导体材料构成的复合型声催化剂对有机污染物具有优良的声催化降解效果,这为未来大规模污水处理研究提供了新思路.
Abstract:
Nowadays, a wide variety of approaches have been used to improve the less effective traditional wastewater treatment methods. One of the advanced technologies for purifying water is ultrasonic degradation method, which is based on the phenomenon of acoustic cavitation. Semiconductor materials, such as titanium dioxide and zinc oxide, possess large specific surface area, high reactivity, and photo- and sono-sensitive property, making them suitable for execution in wastewater treatment. To find the optimal approach for sewage arrangement, the literatures of the combined use of ultrason-ic and semiconductor materials for degradating the pollutants in water were reviewed. The review is aimed at the material type of semiconductor combined with ultrasonic on pollutants degradation and the influence of different experimental param-eters on their sonocatalytic activities, such as ultrasonic irradiation time, pollutants concentration, solution temperature, solution pH, sonocatalyst dosage and crystal phases of sonocatalyst, etc. From what has been discussed, it could be con-cluded that the sonocatalysts consisting of up-conversion luminescent reagent and two different band gap semiconductor ma-terials will have excellent sonocatalytic activities and wide applications for sonocatalytic degradation of organic pollutants, providing a new way to achieve large-scale dispose of wastewater.
Author: GAO Bo LIU Bin WANG Xin ZHAO Hong-rui ZHANG Yu-ying NIU Hua-ying WANG Jing-cheng
作者单位: 辽宁大学药学院,辽宁 沈阳,110036 济南大成医药发展有限公司,山东 济南,250100
刊 名 生态与农村环境学报 ISTICPKUCSSCI
年,卷(期): 2018, 34(6)
分类号: X52
在线出版日期: 2018年8月15日
基金项目: 辽宁省教育厅科学研究项目