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Reference type: Journal
Authors: Zakaria ND, Yusof NA, Haron MJ, Abdullah AH
Article Title: Synthesis and Characterization of a Molecularly Imprinted Polymer for 2,4-Dinitrophenol Uptake Using 4-Vinylbenzoic Acid as the Complexing Monomer.
Publication date: 2011
Journal: Asian Journal of Chemistry
Volume: 23
Issue: (6)
Page numbers: 2456-2460.
Alternative URL: http://www.asianjournalofchemistry.co.in/user/journal/viewarticle.aspx?ArticleID=23_6_23

Abstract: A new technique for analysis of 2,4-dinitrophenol in water at low concentration is proposed based on a molecular imprinted polymer. Molecular imprinted polymer (MIP) is cross linked polymeric materials that exhibit high binding capacity and selectivity towards target molecules (template) purposely present during the synthesis process. The molecular imprinted polymer was prepared in bulk, radical polymerization method using 2,4-dinitrophenol, 4-vinylbenzoic acid, ethylene glycol dimethacrylate and benzoyl peroxide as template, functional monomer, cross-linker and initiator, respectively. Adsorption process for removal of nitrophenol by molecular imprinted polymer was evaluated under various conditions to determine the effect of pH, adsorption kinetics, the isotherm and its selectivity. The maximum adsorption of 2,4- dinitrophenol was 2.50 mg/g. The adsorption of 2,4-dinitrophenol by 4-vinylbenzoic acid was found most effective at pH 5.0. Kinetics study showed that 2,4-dinitrophenol adsorption was modeled by second order kinetic. Adsorption isotherm data could be interpreted using the Langmuir equation.
Template and target information: 2,4-dinitrophenol
Author keywords: molecular imprint polymer, 2,4-Dinitrophenol

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