College of Civil Engineering and Architecture, Zhejiang University, Key Laboratory of Drinking Water Safety and Distribution Technology of Zhejiang Province, Hangzhou, 310058, China.
Chemosphere. 2021 Jan;262:128032. doi: 10.1016/j.chemosphere.2020.128032. Epub 2020 Aug 22.
Effective and practical materials are important for the pollution control in the environment. A novel magnetic molecularly imprinted polymer (CoFeO@TiO-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 CoFeO@TiO-MMIP are 0.21 g mg min and 14.26 mg g, respectively. The effects of experimental factors on the adsorption properties of the magnetic molecularly imprinted polymer were investigated. CoFeO@TiO-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 CoFeO@TiO-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.
对于环境污染控制来说，有效实用的材料是非常重要的。本文基于表面分子印迹技术，结合光催化降解和磁性分离，制备了一种新型的磁性分子印迹聚合物（CoFeO@TiO-MMIP）。CoFeO@TiO-MMIP 的吸附速率常数和最大吸附容量分别为 0.21 g mg min 和 14.26 mg g。实验考察了各因素对磁性分子印迹聚合物吸附性能的影响。CoFeO@TiO-MMIP 对氟喹诺酮类药物具有选择性吸附能力。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，另一种物质对诺氟沙星的去除效率有明显影响。吸附-光催化循环实验验证了 CoFeO@TiO-MMIP 可以同时完成污染物的降解和原位再生，表明其具有良好的可重复使用性。这种具有选择性吸附和光催化再生功能的材料，在去除氟喹诺酮类药物方面具有很大的吸引力。
