Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China; Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637000, China.
J Hazard Mater. 2013 Oct 15;261:83-90. doi: 10.1016/j.jhazmat.2013.07.001. Epub 2013 Jul 10.
A novel functional ionic liquid based cross-linked polymer (PDVB-IL) was synthesized from 1-aminoethyl-3-vinylimidazolium chloride and divinylbenzene for use as an adsorbent. The physicochemical properties of PDVB-IL were investigated by Fourier transform infrared spectroscopy, scanning electron microscopy and thermogravimetric analysis. The adsorptive capacity was investigated using anionic azo dyes of orange II, sunset yellow FCF, and amaranth as adsorbates. The maximum adsorption capacity could reach 925.09, 734.62, and 547.17 mg/g for orange II, sunset yellow FCF and amaranth at 25°C, respectively, which are much better than most of the other adsorbents reported earlier. The effect of pH value was investigated in the range of 1-8. The result shows that a low pH value is found to favor the adsorption of those anionic azo dyes. The adsorption kinetics and isotherms are well fitted by a pseudo second-order model and Langmuir model, respectively. The adsorption process is found to be dominated by physisorption. The introduction of functional ionic liquid moieties into cross-linked poly(divinylbenzene) polymer constitutes a new and efficient kind of adsorbent.
一种新型功能离子液体交联聚合物（PDVB-IL）是由 1-氨基乙基-3-乙烯基咪唑氯和二乙烯基苯合成的，用作吸附剂。通过傅里叶变换红外光谱、扫描电子显微镜和热重分析研究了 PDVB-IL 的物理化学性质。用阴离子偶氮染料橙 II、日落黄 FCF 和苋菜红作为吸附物研究了吸附容量。在 25°C 下，橙 II、日落黄 FCF 和苋菜红的最大吸附容量分别可达 925.09、734.62 和 547.17mg/g，优于大多数先前报道的吸附剂。研究了 pH 值在 1-8 范围内的影响。结果表明，较低的 pH 值有利于这些阴离子偶氮染料的吸附。吸附动力学和等温线分别很好地符合准二级模型和朗缪尔模型。吸附过程主要由物理吸附控制。功能离子液体基团的引入构成了一种新型高效的交联聚（二乙烯基苯）聚合物吸附剂。
