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Int. J. Mol. Sci. 2014, 15(4), 6111-6136; doi:10.3390/ijms15046111

Molecular Imprinted Polymer of Methacrylic Acid Functionalised β-Cyclodextrin for Selective Removal of 2,4-Dichlorophenol

Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
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Received: 21 December 2013 / Revised: 20 February 2014 / Accepted: 21 February 2014 / Published: 10 April 2014
(This article belongs to the Section Molecular Recognition)
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Abstract

This work describes methacrylic acid functionalized β-cyclodextrin (MAA-βCD) as a novel functional monomer in the preparation of molecular imprinted polymer (MIP MAA-βCD) for the selective removal of 2,4-dichlorophenol (2,4-DCP). The polymer was characterized using Fourier Transform Infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET) and Field Emission Scanning Electron Microscopy (FESEM) techniques. The influence of parameters such as solution pH, contact time, temperature and initial concentrations towards removal of 2,4-DCP using MIP MAA-βCD have been evaluated. The imprinted material shows fast kinetics and the optimum pH for removal of 2,4-DCP is pH 7. Compared with the corresponding non-imprinted polymer (NIP MAA-βCD), the MIP MAA-βCD exhibited higher adsorption capacity and outstanding selectivity towards 2,4-DCP. Freundlich isotherm best fitted the adsorption equilibrium data of MIP MAA-βCD and the kinetics followed a pseudo-second-order model. The calculated thermodynamic parameters showed that adsorption of 2,4-DCP was spontaneous and exothermic under the examined conditions. View Full-Text
Keywords: molecular imprinted polymer; 2,4-dichlorophenol; β-cyclodextrin; removal; kinetics; isotherm molecular imprinted polymer; 2,4-dichlorophenol; β-cyclodextrin; removal; kinetics; isotherm
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Surikumaran, H.; Mohamad, S.; Sarih, N.M. Molecular Imprinted Polymer of Methacrylic Acid Functionalised β-Cyclodextrin for Selective Removal of 2,4-Dichlorophenol. Int. J. Mol. Sci. 2014, 15, 6111-6136.

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