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Magnetic and antimicrobial properties of cobalt‐zinc ferrite nanoparticles synthesized by citrate‐gel method
Author(s) -
CH Vinuthna,
Chandra Babu Naidu Kadiyala,
C Chandra Sekhar,
Dachepalli Ravinder
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13276
Subject(s) - materials science , crystallite , spinel , analytical chemistry (journal) , scanning electron microscope , transmission electron microscopy , cobalt , zinc , fourier transform infrared spectroscopy , ferrite (magnet) , particle size , nuclear chemistry , chemical engineering , nanotechnology , metallurgy , chemistry , composite material , chromatography , engineering
The cobalt‐zinc ferrite (CZF) nanomaterials were prepared by citrate‐gel method, and further calcined at 600°C. The single‐phase cubic spinel structure of CZF was confirmed using the X‐ray diffraction pattern. The average crystallite size was found to be in the range of 22‐29 nm. The surface morphology was examined using the scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The average particle size of Co 0.6 Zn 0.4 Fe 2 O 4 was determined to be 19 nm using TEM study which is supporting the average crystallite size measured from the X‐ray diffraction studies. The Fourier‐transform infrared spectra revealed the two strong absorption bands in the series of ferrites between 4500 and 500 cm −1 and these are responsible for the characteristic of spinel ferrites. The presence of elements Cu, Zn, and Co of CZF was confirmed by the elemental spectral signals of energy dispersive spectroscopy. At room temperature, the magnetic measurements of pure ZnFe 2 O 4 and Co 0.6 Zn 0.4 Fe 2 O 4 were evaluated based on hysteresis curves (M‐H curves). The results expressed that the addition of nonmagnetic Zn 2+ ions increases the magnetic behavior in the mixed CZF samples. The antimicrobial activity of the ZnFe 2 O 4 and Co 0.6 Zn 0.4 Fe 2 O 4 nanoferrites was tested against harmful microbes.