文献类型：期刊文献

英文题名：FeCl3/NaNO2: An efficient photocatalyst for the degradation of aquatic steroid estrogens under natural light irradiation

作者：Wang, Lianzhi[1]; Zhang, Feifang[1]; Liu, Renhua[2]; Zhang, Tony Y.[3]; Xue, Xingya[1]; Xu, Qing[1]; Liang, Xinmiao[1,2]

机构：[1] Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; [2] School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China; [3] Eli Lilly and Company, Indianapolis, IN 46285, United States

年份：2007

卷号：41

期号：10

起止页码：3747

外文期刊名：Environmental Science and Technology

收录：EI(收录号：20074610917288)

语种：英文

外文关键词：Degradation - Irradiation - Photocatalysts - Salts

摘要：Assistance and acceleration of the environment's self-remediation of pollutants represent an important and long-standing goal for environmental chemistry communities. Here, a degradation route using a combination of a nitrite and a ferric salt as the photocatalyst is presented for catalytically removing 17β-estradiol (E2), estriol (E3), and 17α-ethynylestradiol (EE2) in water under mimicked natural environmental conditions, i.e., in the phytotron. After a 1 day reaction, 86.6% of the estrogen E2 was degraded. Extending the incubation time to 30 days, more than 99.9% E2 was removed and a very small quantity of malonic acid observed as the residual organic compound, and estrogenic activity was determined. The results showed that the estrogenic activities of the intermediate products are negligible and that there is no secondary risk associated with increased the estrogenic activity. The degradation system demonstrated that FeCl3/NaNO2 is an efficient photocatalyst which is active on natural light irradiation. This work highlights a promising development for in situ treatment of pollutants in natural-environment conditions. ? 2007 American Chemical Society.