Poly(hydroxyethyl methacrylate-co-methacryloylglutamic acid) nanospheres for adsorption of Cd super(2+) ions from aqueous solutions

Poly(2-hydroxyethyl methacrylate-co-N-methacryloyl-(l)-glutamic acid) p(HEMA-MAGA) nanospheres have been synthesized, characterized, and used for the adsorption of Cd super(2+) ions from aqueous solutions. Nanospheres were prepared by surfactant free emulsion polymerization. The p(HEMA-MAGA) nanosph...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2014-02, Vol.16 (2), p.1-11
Main Authors: Esen, Cem, Senay, Raziye Hilal, Feyziolu, Esra, Akgol, Sinan
Format: Article
Language:English
Subjects:
Adsorption
Aqueous solutions
Mathematical analysis
Mathematical models
Nanospheres
Specific surface
Surface chemistry
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Summary:Poly(2-hydroxyethyl methacrylate-co-N-methacryloyl-(l)-glutamic acid) p(HEMA-MAGA) nanospheres have been synthesized, characterized, and used for the adsorption of Cd super(2+) ions from aqueous solutions. Nanospheres were prepared by surfactant free emulsion polymerization. The p(HEMA-MAGA) nanospheres were characterized by SEM, FTIR, zeta size, and elemental analysis. The specific surface area of nanospheres was found to be 1,779 m super(2)/g. According to zeta size analysis results, average size of nanospheres is 147.3 nm with poly-dispersity index of 0.200. The goal of this study was to evaluate the adsorption performance of p(HEMA-MAGA) nanospheres for Cd super(2+) ions from aqueous solutions by a series of batch experiments. The Cd super(2+) concentration was determined by inductively coupled plasma-optical emission spectrometer. Equilibrium sorption experiments indicated a Cd super(2+) uptake capacity of 44.2 mg g super(-1) at pH 4.0 at 25 degree C. The adsorption of Cd super(2+) ions increased with increasing pH and reached a plateau value at around pH 4.0. The data were successfully modeled with a Langmuir equation. A series of kinetics experiments was then carried out and a pseudo-second order equation was used to fit the experimental data. Desorption experiments which were carried out with nitric acid showed that the p(HEMA-MAGA) nanospheres could be reused without significant losses of their initial properties in consecutive adsorption and elution operations.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-014-2255-z