Photodegradation of aniline in NO2--containing aqueous solutions

摘要：

　　NO2-is an important environmental factor which is a source of ·OH or·NO2 radicals.NO2-and HNO2 are absorbing species with their maximum absorption wavelengths at 350-360nm.In this work,aniline which is the prototype of aromatic amines has been investigated.Experiments show that phenol,o-nitrophenol and p-nitrophenol are the main products.Phenol was generated either under irradiation or in the dark,whereas the irradiation conditions lead to a significantly higher yield.Also,the coexistence of ferric chloride and sodium nitrite enhances the generation of phenol as compared to the case with only sodium nitrite.Nitration of aniline has not been observed,while o-nitrophenol and p-nitrophenol were found after irradiation.The addition of isopropanol largely decreases the degradation rate of aniline and the formation rate of phenol,which shows that ·OH plays an important role in these processes.In addition,lower pH promotes the photodegradation of aniline,which is presumably related to the different forms of iron ions under different pH conditions.

关键词： Aniline Phenol Nitration Solar light irradiation Fe3+

作者: Lei Wu Xuefeng Hu

作者单位: Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chines Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research, Chines

会议类型: 国际会议

会议名称: 2013 International Symposium on Environmental Science and Technology(2013环境科学与技术国际会议)

会议地点: 大连

会议语种:英文

页码: 753-753

在线出版日期: 2013-06-04（万方平台首次上网日期，不代表论文的发表时间）