Chemistry Department, Faculty of Science, University Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
Int J Mol Sci. 2009 Jan;10(1):354-365. doi: 10.3390/ijms10010354. Epub 2009 Jan 22.
Molecular imprinted polymers (MIP) are considered one of the most promising selective and novel separation methods for removal phenolic compound in wastewater treatment. MIP are crosslinked polymeric materials that exhibit high binding capacity and selectivity towards a target molecule (template), purposely present during the synthesis process. In this work MIP were prepared in a bulk polymerization method in acetonitrile using 2,4-dinitrophenol, acrylamide, ethylene glycol dimethacrylate, and benzoyl peroxide as template, functional monomer, cross-linker and initiator, respectively. An adsorption process for removal of nitrophenol using the fabricated MIP was evaluated under various pH and time conditions. The parameters studied for 2,4-dinitrophenol includes adsorption kinetics, adsorption isotherm, and selectivity. The maximum adsorption of nitrophenol by the fabricated MIP was 3.50 mg/g. The adsorption of 2,4-dinitrophenol by the fabricated MIP was found effective at pH 6.0. A kinetics study showed that nitrophenol adsorption follows a second order adsorption rate and the adsorption isotherm data is explained well by the Langmuir model.
分子印迹聚合物（MIP）被认为是最有前途的选择性和新颖的分离方法之一，可用于去除废水中的酚类化合物。MIP 是交联的聚合物材料，对目标分子（模板）表现出高结合能力和选择性，在合成过程中特意存在。在这项工作中，MIP 是在乙腈中通过本体聚合方法制备的，使用 2,4-二硝基苯酚、丙烯酰胺、乙二醇二甲基丙烯酸酯和过氧化苯甲酰分别作为模板、功能单体、交联剂和引发剂。使用制备的 MIP 评估了在不同 pH 值和时间条件下去除硝基苯酚的吸附过程。研究的参数包括 2,4-二硝基苯酚的吸附动力学、吸附等温线和选择性。制备的 MIP 对硝基苯酚的最大吸附量为 3.50mg/g。发现制备的 MIP 对 pH 值为 6.0 的 2,4-二硝基苯酚的吸附效果良好。动力学研究表明，硝基苯酚的吸附遵循二级吸附速率，吸附等温线数据很好地解释了朗缪尔模型。
