Article ID Journal Published Year Pages File Type
7606448 Journal of Analytical and Applied Pyrolysis 2017 10 Pages PDF
Abstract
This study presents the controlled synthesis and characterization of CoFe2O4 nanoparticles embedded in a PVA-SiO2 hybrid matrix. The sol-gel method consists in the embedding of reactants (Co and Fe nitrates and 1,4-butanediol) in a matrix containing high molecular weight poly(vinylalcohol) and tetraethylorthosilicate, and in the formation and decomposition of succinate precursors followed by a controlled thermal decomposition (400-1000 °C). The thermal analysis and Fourier transformed infrared spectroscopy confirmed the formation of succinate precursors and hybrid matrix, while X-ray diffraction indicated the formation of single phase CoFe2O4. Transmission electron microscopy revealed the shape and size of CoFe2O4 nanoparticles, while scanning electron microscopy indicated the morphology of CoFe2O4/SiO2-PVA particles. The particle size of ferrite is critically dependent on the annealing temperature and CoFe2O4:PVA-SiO2 molar ratio.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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