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Facile synthesis and characterization of TiO2–graphene–ZnFe2−xTbxO4 ternary nano-hybrids
Ist Teil von
Journal of materials science, 2017, Vol.52 (12), p.7008-7016
Ort / Verlag
New York: Springer US
Erscheinungsjahr
2017
Link zum Volltext
Quelle
SpringerLink (Online service)
Beschreibungen/Notizen
Rare earth ion (Tb
3+
)-doped zinc ferrite (ZnFe
2
O
4
) nanoparticles grown on reduced graphene oxide (RGO) prepared through sol–gel method have been reported. During the sol–gel process, graphene oxide was reduced to RGO, and, subsequently, anatase TiO
2
and cubic spinel ZnFe
2−
x
Tb
x
O
4
were grown in situ on the surfaces of the RGO nano-sheets. The structure, surface morphology and chemical composition of ternary nano-composites were studied using scanning electron microscopy, energy-dispersive X-ray, X-ray diffraction (XRD), Fourier transform infrared spectroscopy, photoluminescence spectra and vibrating sample magnetometer (VSM). XRD results showed that the produced TiO
2
was composed of anatase and some rutile phases and ZnFe
2
O
4
with a cubic spinel structure. The particle sizes of ZnFe
2
O
4
and TiO
2
nanoparticles were in the ranges of ~65–80 and ~17–20 nm, respectively. The saturation magnetization (
M
S
) determined from VSM was found to linearly increase with Tb
3+
concentration.