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Reference type: Journal
Authors: Rajabi HR, Shamsipur M, Pourmortazavi SM
Article Title: Preparation of a novel potassium ion imprinted polymeric nanoparticles based on dicyclohexyl 18C6 for selective determination of K+ ion in different water samples.
Publication date: 2013
Journal: Materials Science and Engineering: C
Volume: 33
Issue: (6)
Page numbers: 3374-3381.
DOI: 10.1016/j.msec.2013.04.022
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0928493113002361

Abstract: This work reports the first application of the ion imprinting technology for determination of potassium ion by precipitation polymerization method. Ion imprinted polymeric (IIP) nanoparticles were prepared by using dicyclohexyl 18C6 (DC18C6) as a K+ ion selective crown ether, in the acetonitrile - dimethylsulfoxide (3:1; v/v) mixture as porogen. The imprint potassium ion was removed from the polymeric matrix using 0.5 M HNO3. The scanning electron microscopy (SEM) micrographs showed colloidal nanoparticles of 60 - 90 nm in diameter and slightly irregular in shape. The obtained ion-imprinted particles for K+ showed selective recognition with rapid adsorption and desorption processes. It was found that imprinting results in increased affinity of the material toward K+ ion over other competitor metal ions with the same charge and/or close ionic radius. The synthesized IIP nanobeads were shown to be promising for solid-phase extraction coupled with flame photometry for determination of trace K+ ion in different water samples
Template and target information: potassium ion, K+
Author keywords: Ion-imprinted polymeric nanoparticles, K+ ion, Dicyclohexyl 18C6, Flame photometric determination, precipitation polymerization


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