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Reference type: Journal
Authors: Ahmed MA, Abdelbar NM, Mohamed AA
Article Title: Molecular imprinted chitosan-TiO2 nanocomposite for the selective removal of Rose Bengal from wastewater.
Publication date: 2018
Journal: International Journal of Biological Macromolecules
Volume: 107
Issue: (Part A)
Page numbers: 1046-1053.
DOI: 10.1016/j.ijbiomac.2017.09.082
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0141813017323152

Abstract: A new molecularly imprinted polymer (MIP) chitosan-TiO2 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 (95.38 m2/g) with relatively uniform mesoporous channels that allowed an exceptional uptake of the dye (qm = 79.365 mg/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 (62.279 kJ mol-1) showing strong interaction of MIP with the dye. The prepared MIP exhibited a good recyclability and stability
Template and target information: Rose Bengal
Author keywords: MIP nanoparticles, Rose Bengal, Chitosan-titania nanocomposite, Mesoporous structure, Industrial wastewater


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