Wang Jiu-Mei, Guan Ze-Yu, Wan Jin-Quan, Wang Yan, Ma Yong-Wen, Yan Zhi-Cheng, Zhang Gui-Hua
College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510006, China.
Huan Jing Ke Xue. 2017 Dec 8;38(12):5124-5131. doi: 10.13227/j.hjkx.201704004.
MIL-88A@MIP was fabricated for the first time in this experiment with a metal-organic framework of MIL-88A as the precursor based on the molecular imprinting method. It was characterized by X-ray diffraction (XRD), scanning electronic microscopy (SEM), energy dispersive spectrometer (EDS), and N adsorption. The catalytic performance of MIL-88A@MIP was tested to activate persulfate (PS) to generate SO for the degradation of dibutyl phthalate (DBP), which was used as a target pollutant. Compared with the precursor MIL-88A, the catalytic activity of MIL-88A@MIP was improved effectively through targeted modification, and the DBP removal rate increased 80.4% after reacting for 480 min. An experiment determining the influencing factors showed that the optimum activation condition of the catalyst was PS:DBP=600:1, MIL-88A@MIP dosage of 0.5 g·L,and pH=3.26. Furthermore, MIL-88A@MIP shows a high capability of removing different phthalic acid ester (PAE) contaminants that reflect its targeting selectivity.
在本实验中，首次以金属有机框架MIL-88A为前驱体，基于分子印迹法制备了MIL-88A@MIP。通过X射线衍射（XRD）、扫描电子显微镜（SEM）、能谱仪（EDS）和N吸附对其进行了表征。测试了MIL-88A@MIP活化过硫酸盐（PS）生成SO用于降解邻苯二甲酸二丁酯（DBP）（用作目标污染物）的催化性能。与前驱体MIL-88A相比，通过靶向改性有效提高了MIL-88A@MIP的催化活性，反应480 min后DBP去除率提高了80.4%。影响因素实验表明，催化剂的最佳活化条件为PS:DBP = 600:1、MIL-88A@MIP用量0.5 g·L 、pH = 3.26。此外，MIL-88A@MIP对不同邻苯二甲酸酯（PAE）污染物具有较高去除能力，体现了其靶向选择性。
