One-pot microwave combustion synthesis, structural and magnetic characterization studies of spinel CoAl2O4 nanoparticles

Abstract

Spinel CoAl2O4 nanoparticles were synthesized via Opuntia dillenii plant extract microwave heating method. Opuntia dillenii plant extract-assisted combustion method makes straightforward synthesis, which is alternative process of spinel nanoparticles preparation. The synthesized spinel CoAl2O4 nanoparticles was successfully characterized by powder XRD pattern, FT-IR spectra, EDX analysis, HR-SEM analysis, and VSM techniques. XRD pattern, FT-IR and EDX results established the development of spinel and single cubic phase CoAl2O4 nanocrystals. The formation of spherical shaped nanoparticles was confirmed by HR-SEM technique. VSM measurements revealed that CoAl2O4 sample have superparamagnetic behavior.