Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo 11566, Egypt.
Department of Chemistry, Faculty of Science, Ain Shams University, Abbassia, Cairo 11566, Egypt.
Int J Biol Macromol. 2018 Feb;107(Pt A):1046-1053. doi: 10.1016/j.ijbiomac.2017.09.082. Epub 2017 Sep 21.
A new molecularly imprinted polymer (MIP) chitosan-TiO nanocomposite (CTNC) was prepared for the selective and quantitative removal of Rose Bengal dye from industrial wastewater. The physicochemical features of the prepared CTNC-MIP nanoparticles were thoroughly investigated. The prepared MIP nanoparticles exhibited high surface area (95.38m/g) with relatively uniform mesoporous channels that allowed an exceptional uptake of the dye (q=79.365mg/g) and reflected the high selectivity of the prepared MIP compared to pure chitosan. The dye uptake was investigated using Freundlich, Langmuir, Dubinin Radushkevich and Temkin models. The kinetics of removal was explored by pseudo-first, pseudo second order, Elovich and Weber-Morris models. The Experimental data fitted well into pseudo-second order model, and much well with the Langmuir isotherm confirming the formation of monolayer of dye molecules. The enthalpy of adsorption was (62.279kJmol) showing strong interaction of MIP with the dye. The prepared MIP exhibited a good recyclability and stability.
一种新型的分子印迹聚合物（MIP）壳聚糖- TiO2纳米复合材料（CTNC）被制备出来，用于从工业废水中选择性和定量地去除玫瑰红染料。对制备的 CTNC-MIP 纳米粒子的物理化学特性进行了深入研究。所制备的 MIP 纳米粒子具有高比表面积（95.38m2/g）和相对均匀的中孔通道，允许染料的特殊吸收（q=79.365mg/g），并反映了与纯壳聚糖相比，制备的 MIP 的高选择性。使用 Freundlich、Langmuir、Dubinin Radushkevich 和 Temkin 模型研究了染料的吸收。通过拟一级、拟二级、Elovich 和 Weber-Morris 模型研究了去除动力学。实验数据很好地符合拟二级模型，并且很好地符合 Langmuir 等温线，证实了染料分子的单层形成。吸附焓为（62.279kJ/mol），表明 MIP 与染料之间存在强烈的相互作用。所制备的 MIP 表现出良好的可回收性和稳定性。
