Efficient removal of norfloxacin in water using magnetic molecularly imprinted polymer
Efficient removal of norfloxacin in water using magnetic molecularly imprinted polymer
复制标题
使用磁性分子印迹聚合物有效去除水中的诺氟沙星
DOI：
10.1016/j.chemosphere.2020.128032
复制
发表时间：
2021-01-01
期刊：
影响因子：
8.8
通讯作者：
Zhou, Yongchao
中科院分区：
文献类型：
--
作者：
Fang, Lei;Miao, Yunxia;Zhou, Yongchao
有效、实用的材料对环境污染控制具有重要意义。将表面分子印迹技术与光催化降解和磁性分离相结合，制备了一种新型磁性分子印迹聚合物（CoFe2O4@TiO2-MMIP）。CoFe_2O_4@TiO_2-MMIP的吸附速率常数和最大吸附量分别为0.21 g mg（-1）min（-1）和14.26 mg g（-1）。考察了实验因素对磁性分子印迹聚合物吸附性能的影响。CoFe2O4@TiO2-MMIP对氟喹诺酮类药物具有选择性吸附作用。吸附效率与目标污染物的分子结构、分子量、极性和官能团密切相关，在二元吸附体系中，诺氟沙星的去除率明显受另一种物质的影响。吸附-光催化回收实验验证了CoFe2O4@TiO2-MMIP能够同时完成污染物的降解和原位再生，具有良好的可重复使用性。该材料具有选择性吸附和光催化再生的特点，在氟喹诺酮类药物的去除方面具有很大的应用前景。(C)2020爱思唯尔有限公司保留所有权利。
Effective and practical materials are important for the pollution control in the environment. A novel magnetic molecularly imprinted polymer (CoFe2O4@TiO2-MMIP) was prepared based on the surface molecular imprinting technology combined with photocatalytic degradation and magnetic separation. The adsorption rate constant and maximum adsorption capacity of CoFe2O4@TiO2-MMIP are 0.21 g mg(-1) min(-1) and 14.26 mg g(-1), respectively. The effects of experimental factors on the adsorption properties of the magnetic molecularly imprinted polymer were investigated. CoFe2O4@TiO2-MMIP had selective adsorption ability towards fluoroquinolones. The adsorption efficiency was closely related to the molecular structure, molecular weight, polarity and functional groups of the target contaminant and the removal efficiency of norfloxacin was affected by another substance obviously in binary adsorption system. The adsorption-photocatalytic recycling experiment verified that CoFe2O4@TiO2-MMIP could simultaneously complete the degradation of pollutants and in-situ regeneration, indicating good reusability. This material with selective adsorption and photocatalytic regeneration would have substantial attraction for application in the removal of fluoroquinolones. (C) 2020 Elsevier Ltd. All rights reserved.