School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China.
School of Environment, Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huai River Water Environmental Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan 453007, PR China.
J Hazard Mater. 2019 Jul 5;373:347-358. doi: 10.1016/j.jhazmat.2019.03.101. Epub 2019 Mar 25.
An ionic liquid functionalized polymer (IL-P) was prepared feasibly and simply by grafting1-butyl-3-vinylimidazolium bromide onto the silica surface. The IL-P was fully characterized, and the results showed that IL-P has a rough surface with a lower specific surface area (205.49 m g), and the involvement of ionic liquid significantly improved the adsorption performance of IL-P. The pH, initial concentration, adsorption time and temperature were investigated to discuss the adsorption behaviors of IL-P in aqueous solution. The adsorption process of 2,4-dichlorophenol (2,4-DCP), bisphenol A (BPA) and 2,4-dinitrophenol (2,4-DNP) onto IL-P better fitted the pseudo-second-order model, while that of 2-isonaphthol (2-NP) followed the pseudo-first-order model. The adsorption behaviors of IL-P towards 2,4-DCP and 2,4-DNP fitted well with Liu isotherm model, and that of BPA and 2-NP can be described by Langmuir model. The maximum adsorption capacities of 2,4-DCP, BPA, 2,4-DNP and 2-NP bound on IL-P was 239.7, 68.39, 56.86 and 64.28 mg g, respectively, and the adsorption of IL-P is a spontaneous physical process. Comparing with other adsorbent, the as-prepared IL-P showed excellent recognition ability towards the phenolic compounds and can be applied to adsorb and remove trace 2,4-DCP, 2-NP, 2,4-DNP and BPA simultaneously in complicated wastewater and soil samples.
一种离子液体功能化聚合物（IL-P）通过将 1-丁基-3-乙烯基咪唑溴盐接枝到二氧化硅表面上而被可行且简单地制备。IL-P 被充分表征，结果表明 IL-P 具有粗糙的表面和较低的比表面积（205.49 m g），离子液体的存在显著提高了 IL-P 的吸附性能。研究了 pH、初始浓度、吸附时间和温度，以讨论 IL-P 在水溶液中的吸附行为。2,4-二氯苯酚（2,4-DCP）、双酚 A（BPA）和 2,4-二硝基苯酚（2,4-DNP）在 IL-P 上的吸附过程更符合准二级动力学模型，而 2-萘酚（2-NP）的吸附过程则符合准一级动力学模型。IL-P 对 2,4-DCP 和 2,4-DNP 的吸附行为与 Liu 等温线模型拟合良好，而 BPA 和 2-NP 的吸附行为可以用 Langmuir 模型描述。IL-P 对 2,4-DCP、BPA、2,4-DNP 和 2-NP 的最大吸附容量分别为 239.7、68.39、56.86 和 64.28 mg g，吸附过程是自发的物理过程。与其他吸附剂相比，所制备的 IL-P 对酚类化合物具有优异的识别能力，可应用于同时吸附和去除复杂废水中痕量 2,4-DCP、2-NP、2,4-DNP 和 BPA 以及土壤样品中的这些物质。
