Surface-initiated atom transfer radical polymerization of polyamine grafting from magnetic iron oxide submicroparticles for high adsorption capacity of cadmium in aqueous solution

Qingyang Liu; Zhongxing Ji; Yiling Bei

doi:10.1016/j.jcis.2012.11.034

Surface-initiated atom transfer radical polymerization of polyamine grafting from magnetic iron oxide submicroparticles for high adsorption capacity of cadmium in aqueous solution

J Colloid Interface Sci. 2013 Mar 15:394:646-51. doi: 10.1016/j.jcis.2012.11.034. Epub 2012 Dec 5.

Authors

Qingyang Liu¹, Zhongxing Ji, Yiling Bei

Affiliation

¹ Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.

PMID: 23273544
DOI: 10.1016/j.jcis.2012.11.034

Abstract

Chemical modification of magnetic submicroparticles (MSPs) with functional polymers using controlled/living radical polymerization method has recently gained a great deal of attentions because of the potential applications to water treatment. In this work, we demonstrated an efficient method for poly(glycidyl methacrylate) (pGMA) modification of MSPs, by surface-initiated atom transfer radical polymerization method, and then, the particles were actually modified by triethylenetetramine through epoxy groups of pGMA to form polyamine/MSPs. The material was characterized using infrared spectroscopy, thermo gravimetric analyzer, transmission electron microscopic, gel permeation chromatography, and vibrating sample magnetometer. Sorption of Cd(II) to polyamine/MSPs reached equilibrium in ~100 min and agreed well to the Freundlich isotherm equation with maximum adsorption capacity of 71.3 mg g(-1) for the 500 mg L(-1) Cd(II) aqueous solution at neutral pH.