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Reference type: Journal
Authors: Kyzas GZ, Lazaridis NK, Bikiaris DN
Article Title: Optimization of chitosan and β-cyclodextrin molecularly imprinted polymer synthesis for dye adsorption.
Publication date: 2013
Journal: Carbohydrate Polymers
Volume: 91
Issue: (1)
Page numbers: 198-208.
DOI: 10.1016/j.carbpol.2012.08.016
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0144861712007886

Abstract: In this study, two types of novel molecularly imprinted polymers (MIPs) were prepared, for toxic and carcinogenic dyes adsorption. Substrates of the polymeric matrix of the two MIPs were β-cyclodextrin and chitosan. The conditions in the polymerization/imprinting stage and in the rebinding/adsorption step were optimized. The effect of a range of parameters (polymer, cross-linker, and initiator concentrations, reaction time and pH) on the selectivity and adsorption capacity of the dye-MIPs were investigated. Their dye rebinding properties were demonstrated by equilibrium batch experiments (fitting with Freundlich model) and their kinetic rates were exported by the pseudo-first order model. Additionally, a thermodynamic evaluation was carried out through the determination of enthalpy, entropy, and free energy. The selectivity of MIPs was elucidated by their different rebinding capabilities in a trichromatic mixture (composed of related structurally dyes). Regeneration/reuse of the dye-loaded polymers was evaluated via sequential adsorption - desorption cycles
Template and target information: dyes, Remazol Red 3BS, RR
Author keywords: molecular imprinting polymers, chitosan, β-cyclodextrin, selectivity, Dyes adsorption


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