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Nanocomposites graphene/CoFe2O4 and graphene/NiFe2O4 – preparation and characterization

Jędrzejewska A., Sibera D., Pełech R., Jedrzejewski R., Narkiewicz U.

Archives of Metallurgy and Materials

2019

Vol. 64, iss. 1

103--112

A series of nanocomposite graphene/CoFe2 O4 and graphene/NiFe2 O4 hybrid materials was synthesized via facile, one-pot solvothermal route. The materials were obtained using two pressure methods: synthesis in the autoclave and synthesis in the microwave solvothermal reactor. The use of a microwave reactor enabled to significantly shorten the synthesis time up to 15 min. All the syntheses were carried out in a solution of ethanol. The effect of processing conditions and composite composition on the physicochemical properties and electric conductivity was studied. The specific surface area, density, morphology, phase composition, thermal properties and electric conductivity of the obtained composites were investigated. The results of studies of composites obtained in an autoclave and in a microwave reactor were compared.