Abstract:
Magnetic core-shell (zinc ferrites/c-dots composite are properly synthesized under this
research using a simple co- precipitation and hydrothermal process. Various approaches
are used to investigate zinc ferrites and carbon dots composites like X-ray diffraction
(XRD), Scanning electron microscope (SEM), Fourier-transform infrared (FTIR)
spectroscopy, Raman spectroscopy, and vibrating sample magnetometer (VSM). XRD
diffraction demonstrated an inverse spinel structure of zinc ferrites; the lattice parameter
was decreased from 8.19Å to 8.10Å and carbon dots having rods like structure. This
provided excellent chemical stability for about 40 hours. From SEM analysis, the
composite seem to be uniformly dispersed or coated using low contrast consecutive c dots layers to produce a core-shell structure. Zinc ferrites are agglomerated in non uniform in size, whereas carbon dots and its composites are in uniform shape according
to SEM image. The EDX study indicated that the substitution was successful. For zinc
ferrites, carbon dots and composite the FTIR spectra showed that the absorption band of
the tetrahedral site is now around 654 cm-1
, 795cm-1
, 658cm-1
respectively. Different
bonds in the infrared spectrum match to specific function groups and bonding in various
chemicals. The magnetic characterizations were investigated using a vibration sample
magnetometer (VSM) at room temperature (0 , and the results indicate that sample
Zinc Ferrites/Carbon dots displays ferrimagnetic behavior.
