Electrospun Cu-Co ferrite nanofibers: synthesis, structure, optical and magnetic properties, and anti-cancer activity
In this study, we investigated Cu-Co ferrite nanofibers (NFs) that were synthesized for the first time employing the electrospinning technique. The structure, phase purity and crystallite size of all the prepared NFs were revealed by powder X-ray diffraction (PXRD) analysis. The NFs crystallized in...
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Published in | RSC advances Vol. 14; no. 11; pp. 754 - 755 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
29.02.2024
The Royal Society of Chemistry |
Subjects | |
Online Access | Get full text |
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Summary: | In this study, we investigated Cu-Co ferrite nanofibers (NFs) that were synthesized for the first time employing the electrospinning technique. The structure, phase purity and crystallite size of all the prepared NFs were revealed by powder X-ray diffraction (PXRD) analysis. The NFs crystallized in the
Fd
3&cmb.macr;
m
(no. 227) space group and the cation distribution arrangement over distinct sites in their structure was analyzed. Scanning electron microscopy (SEM) together with energy-dispersive X-ray (EDX) spectroscopy analysis showed the microstructure of the NFs and verified their expected chemical compositions. High-resolution transmission electron microscopy (TEM) images confirmed the fibrous nature and the construction of the NFs. The band gap energies derived from the UV-vis reflectance spectra showed a blue shift with an increase in the amount of Cu in the sample from 1.42 eV to 1.86 eV. Magnetization (
M
) as a function of magnetic field (
H
) measurements performed at ambient and low temperatures showed the ferrimagnetic behavior of all the NFs. The magnetic parameters including coercivity (
H
c
), saturation magnetization (
M
s
), remanent magnetization (
M
r
), and squareness ratio were determined from the recorded magnetization curves. At 300 K,
M
s
was reduced from 78.8 to 42.4 emu g
−1
,
M
r
reduced from 22.8 to 7.6 emu g
−1
and the Bohr magneton reduced from 3.3 to 1.8
μ
B
with an increase in the content of Cu in the samples. The same trend was observed at 10 K, where
M
s
was reduced from 93.7 to 50.9 emu g
−1
,
M
r
reduced from 60.9 to 35.9 emu g
−1
and the Bohr magneton reduced from 3.94 to 2.16
μ
B
. Alternatively,
H
c
has the highest values for
x
= 0 (850 Oe at 300 K and 5220 Oe at 10 K) and
x
= 0.6 (800 Oe at 300 K and 5400 Oe at 10 K). The anti-cancer activity of the NFs was evaluated using the MTT cell viability assay, showing a reduction in the viability of both HCT-116 and HeLa cancer cells compared to non-cancerous HEK-293 cells after treatment with the NFs. Apoptotic activity was examined by DAPI staining, where treatment with the NFs induced chromatin condensation and nuclear disintegration in HCT-116 cells.
In this study, we investigated Cu-Co ferrite nanofibers (NFs) that were synthesized for the first time employing the electrospinning technique. |
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Bibliography: | https://doi.org/10.1039/d3ra08087k Electronic supplementary information (ESI) available. See DOI ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2046-2069 2046-2069 |
DOI: | 10.1039/d3ra08087k |