One-step method for preparation of magnetic nanoparticles coated with chitosan

By Karla M. Gregorio‐Jáuregui, M. G. Pineda, J. Rivera-Salinas, Gilberto Hurtado, H. Saade, J. Martínez, A. Ilyina, R. G. López. 2012

143 citations recorded by the source corpus.

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 10-11nm 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.

Subfields: Biomaterials, Biomedical Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/9d46d0eac48d42113eb7736a1741516569a78280

Citations in the corpus

• Removal of permethrin pesticide from water by chitosan–zinc oxide nanoparticles composite as an adsorbent (2014, unknown): “Chitosan contains high units of two functional groups, hydroxyl ( A OH) and amino ( A NH 2 ), which are responsible for the reactivity of this polymer as an excellent natural adsor-bent and give chitosan its powerful adsorptive capacity [9–11].”