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Reference type: Journal
Authors: Raof SFA, Mohamad S, Abas MR
Article Title: Synthesis and Evaluation of Molecularly Imprinted Silica Gel for 2-Hydroxybenzoic Acid in Aqueous Solution.
Publication date: 2013
Journal: International Journal of Molecular Sciences
Volume: 14
Issue: (3)
Page numbers: 5952-5965.
DOI: 10.3390/ijms14035952
Alternative URL: http://www.mdpi.com/1422-0067/14/3/5952

Abstract: A molecularly imprinted silica gel sorbent for selective removal of 2-Hydroxybenzoic acid (2-HA) was prepared by a surface imprinting technique with a sol-gel process. The 2-HA molecularly imprinted silica gel (2-HA-MISG) sorbent was evaluated by various parameters, including the influence of pH, static, kinetic adsorption and selectivity experiments. The optimum adsorption capacity to the 2-HA appeared to be around pH 2 by the polymer. Morevoer, the imprinted sorbent displayed fast uptake kinetics, obtained within 20 min. The adsorption capacity of the 2-HA-MISG (76.2 mg g-1) was higher than that of the non-imprinted silica gel (NISG) (42.58 mg g-1). This indicates that the 2-HA-MISG offers a higher affinity for 2-HA than the NISG. The polymer displays good selectivity and exhibits good reusability. Experimental results show the potential of molecularly imprinted silica sorbent for selective removal of 2-HA.
Template and target information: 2-hydroxybenzoic acid, 2-HA, salicylic acid
Author keywords: molecularly imprinted silica gel, 2-Hydroxybenzoic acid, functionalized silica gel

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