|
|||||
|
|
| 微波辅助光催化降解兽药环丙氨嗪 | |
| 引用本文： | 袁敏,徐仁扣,封亚辉.微波辅助光催化降解兽药环丙氨嗪[J].中国环境科学,2012,32(4):603-608. |
| 作者姓名： | 袁敏 徐仁扣 封亚辉 |
| 作者单位： | 1. 中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室,江苏南京210008;江苏出入境检验检疫局,江苏南京210001;中国科学院研究生院,北京100049 2. 中国科学院南京土壤研究所,土壤与农业可持续发展国家重点实验室,江苏南京210008;中国科学院研究生院,北京100049 3. 江苏出入境检验检疫局,江苏南京,210001 |
| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX2-YW-Q10-3) |
| 摘 要： | 利用微波光催化实验装置研究了水溶液中兽药环丙氨嗪的光催化降解,探讨了添加微波无电极灯(EDL)对降解反应的促进作用.结果表明,环丙氨嗪在微波辅助1.0g/L TiO2光催化体系中反应20min降解率可达99.6%,检测到的主要降解产物为三聚氰胺.环丙氨嗪在pH3.0~9.0范围内的微波辅助光催化降解率都高于99%;增加TiO2用量和EDL数量均显著提高其降解率.外源添加NO3-离子明显降低了环丙氨嗪的降解率,主要由于NO3-对紫外光的强吸收和在TiO2表面带正电的空穴位的吸附作用. |
| 关 键 词： | 微波辅助 光催化 降解 环丙氨嗪 |
| 收稿时间： | 2011-07-11; |
Microwave assisted photocatalytic degradation of cyromazine in aqueous solutions |
|
| YUAN Min , XU Ren-kou , FENG Ya-hui.Microwave assisted photocatalytic degradation of cyromazine in aqueous solutions[J].China Environmental Science,2012,32(4):603-608. | |
| Authors: | YUAN Min XU Ren-kou FENG Ya-hui |
| Institution: | 1.State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008,China;2.Jiangsu Entry-Exit Inspection and Quarantine Bureau,Nanjing 210001,China;3.Graduate University of Chinese Academy of Sciences,Beijing 100049,China) |
| Abstract: | Photocatalytic degradation of cyromazine in TiO2 aqueous suspensions assisted with microwave was investigated with a microwave apparatus.The enhancement of the degradation by electrodeless discharge lamp(EDL) was examined.Results showed that the degradation efficiency of cyromazine in 1.0 g/L TiO2 suspension reached 99.6% after 20 min reaction by the microwave assisted photocatalysis.The primary degradation product melamine was detected.The degradation efficiencies of cyromazine were all over 99% in the pH range from 3.0 to 9.0 and increased with the increasing dosage of TiO2 and the number of EDL.Addition of nitrate ions considerably inhibited the degradation of cyromazine,which was mainly caused by the high UV absorption of nitrate at the short wavelength and the adsorption of nitrate in positive holes on TiO2 surface. |
| Keywords: | microwave assistance photocatalysis degradation cyromazine |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |
| 点击此处可从《中国环境科学》浏览原始摘要信息 | |
| 点击此处可从《中国环境科学》下载免费的PDF全文 | |