论文信息 - A STUDY ON IRON OXIDE NANOPARTICLES COATED WITH DEXTRIN OBTAINED BY COPRECIPITATION

A STUDY ON IRON OXIDE NANOPARTICLES COATED WITH DEXTRIN OBTAINED BY COPRECIPITATION

The iron oxide nanoparticles and iron oxide nanoparticles coated with dextrin have been synthesized using aqueous solution of ferric and ferrous ions and mixtures of dextrin with sodium salt. The size of the iron-oxide nanoparticles is controlled by the concentration of sodium salt in the medium. An average size of iron oxide and iron oxide coated with dextrin was found by transmission electron microscopy (TEM). The iron oxide nanoparticles are nearly spherical with an average diameter of about 8.0 ±1 nm. The iron oxide nanoparticles coated with dextrin appear as cluster-like aggregates. The average diameter of these nanoparticles is about 5.1 nm. The attachment of the dextrin on the particle surface was confirmed by FTIR spectroscopy and thermogravimetric analyses (TGA).

M. Costache | D. Predoi | F. Ungureanu | R. Vătăşescu-Balcan

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