One-Step Method for Preparation of Magnetic Nanoparticles Coated with Chitosan

Preparation of magnetic nanoparticles coated with chitosan in one step by the coprecipitation method in the presence of different chitosan concentrations is reported here. Obtaining of magnetic superparamagnetic nanoparticles was confirmed by X-ray diffraction and magnetic measurements. Scanning tra...

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Published inJournal of nanomaterials Vol. 2012; no. 2012; pp. 1 - 8
Main Authors López, Raúl G., Martinez, José L., Saade, Hened, Hurtado, Gil, Rivera-Salinas, Jorge E., Pineda, Ma. Guadalupe, Gregorio-Jauregui, Karla M., Ilyna, Anna
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Publishing Corporation 01.01.2012
Hindawi Limited
Subjects
Aqueous solutions
Atoms & subatomic particles
Chitosan
Diffraction
Effectiveness
Fourier transforms
Infrared spectroscopy
Nanocomposites
Nanomaterials
Nanoparticles
Thermogravimetric analysis
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Summary:Preparation of magnetic nanoparticles coated with chitosan in one step by the coprecipitation method in the presence of different chitosan concentrations is reported here. Obtaining of magnetic superparamagnetic nanoparticles was confirmed by X-ray diffraction and magnetic measurements. Scanning transmission electron microscopy allowed to identify spheroidal nanoparticles with around 10-11 nm in average diameter. Characterization of the products by Fourier transform infrared spectroscopy demonstrated that composite chitosan-magnetic nanoparticles were obtained. Chitosan content in obtained nanocomposites was estimated by thermogravimetric analysis. The nanocomposites were tested in Pb2+ removal from a PbCl2 aqueous solution, showing a removal efficacy up to 53.6%. This work provides a simple method for chitosan-coated nanoparticles obtaining, which could be useful for heavy metal ions removal from water.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1687-4110
1687-4129
DOI:10.1155/2012/813958