Bimetallic Alloy of Fe 2 O 3 -Ag Nanoparticles: Characterization and Structural Modeling

Abstract

The synthesis of Fe 3 O 4 -Ag bimetallic nanoparticles by chemical reduction was carried out. Fe nanoparticles were obtained using Fe (III) Chloride hexahydrate (FeCl 3 •6H 2 O) as precursor and sodium borohydride (NaBH 4 ) as reducing agent, subsequently, a solution of silver nitrate (AgNO 3 ) was added to the reaction. The synthesis methodology employed in this case, is a modification of chemical reduction method. Through this procedure has been possible simplify the synthesis route used to obtain bimetallic systems such as Fe 3 O 4 -Ag. Particles with semi-spherical morphology were observed. High-resolution transmission electron microscopy (HREM), ultraviolet visible spectroscopy (UV-is) and quasi-elastic light scattering (QELS) techniques were employed for the structural characterization of Fe 3 O 4 -Ag nanostructures. Some models presented describe and prove the formation of the Fe 3 O 4 -Ag alloy type structures.