Digest Journal of Nanomaterials and Biostructures,
Journal Year:
2023,
Volume and Issue:
18(3), P. 1051 - 1063
Published: Sept. 20, 2023
In
this
research,
various
concentrations
of
manganese
dioxide
(MnO2)
is
composed
by
polyvinyl
alcohol
(PVA)
to
forming
PVA
/MnO2
films.
The
XRD
and
SEM
are
respectively
demonstrated
the
structure
morphological
characteristics
results
show
that
PVA/MnO2
films
fabricated
successfully.
demonstrate
MnO2
dispersed
evenly
along
polymeric
chains.
conductivity,
impedance
energy
density
were
measured
via
an
LCR
bridge
with
frequency
102
106
Hz.
There
increase
in
dielectric
from
64
for
95
PVA/0.06MnO2
at
105
Hz,
also
conductivity
increases
3.61x10-3
S/cm
5.33x10-3
PVA/0.06MnO2.
optical
recorded
UV/Vis
spectroscopy.
band
gap
reduced
5.01
eV
4.85,
4.71,
4.59
PVA/0.02MnO2,
PVA/0.04MnO2,
And
Urbach
tail
modified
1.72
3.12,
3.453,
3.66
respectively.
present
work
open
possibility
applied
different
devices
as
storage
systems
optoelectronics.
Journal of Ovonic Research,
Journal Year:
2023,
Volume and Issue:
19(2), P. 175 - 186
Published: March 1, 2023
Different
contents
of
manganese
oxide
(MnO2)
and
zinc
(ZnO)
were
combined
with
polyvinyl
alcohol
(PVA)
to
form
flexi
MnO2/PVA
as
well
ZnO/PVA
nanocomposite
films.
XRD
SEM
methodologies
are
used
evaluate
the
properties
fabricated
The
analysis
demonstrates
that
composites
effectively
fabricated.
pictures
show
MnO2
ZnO
uniformly
dispersed
throughout
PVA
polymeric
chains.
Furthermore,
electrical
conductivities,
dielectric
permittivity,
electric
moduli
behaviors,
impedances
PVA,
MnO2/PVA,
films
recorded
using
LCR
method
in
frequencies
102
106
Hz.
At
105
Hz,
enhanced
from
2.05
for
5.5
on
PVA/5%ZnO
4.15
PVA/10%MnO2,
while
conductivities
increase
1.05x10-7
S/cm
4.01x10-7
5.4x10-7
PVA/10%MnO2.
current
work
pave
way
a
different
uses
including
battery,
super-capacitors,
storage
devices.
Physica Scripta,
Journal Year:
2024,
Volume and Issue:
99(11), P. 115967 - 115967
Published: Sept. 19, 2024
Abstract
The
core-shell
approach
was
used
to
synthesize
MnO@Fe
2
O
3
,
while
the
solution
casting
method
performed
produce
a
blend
of
poly
(vinyl
alcohol)
and
pyrrolidone)
(70/30
wt%).
Subsequently,
employed
as
nanofillers
(nFs)
in
at
0,
0.06,
0.3,
0.6,
3,
6
wt%
concentrations.
Fourier
transform
infrared
spectroscopy
(FTIR),
scanning
electron
microscopy
(SEM),
x-ray
diffraction
(XRD)
were
characterize
synthesized
polymeric
nanocomposite
(PNC)
films.
XRD
FTIR
confirm
probable
interactions
between
nanoparticles
SEM
images
surface
show
that
entire
film’s
is
uniformly
homogeneously
distributed
for
0.6
nFs.
composite
tensile
strength
enhanced
by
adding
nFs,
from
9.45
MPa
pure
(PVA-PVP)
film
22.35
MPa.
This
addition
also
reduced
indirect
optical
band
gap
4.84
eV
(PVA/PVP)
4.71
eV.
Two
laser
sources
(He-Ne
632.8
nm
green
533
nm)
determine
limiting
behavior
output
power
lasers
with
wavelengths
532
650
drops
5.49
2.4
mW
19.8
9.4
mW,
respectively,
matrix’s
nFs
concentration
rises
wt%.
Also,
impact
temperature
on
dielectric
properties
PNC
examined.
constant
gradually
increased
rising
decreased
linearly
increasing
frequency
temperature.
findings
suggest
nanocomposites
exist
are
widely
recommended
optoelectronics,
microelectronics,
radiation
detection.
Digest Journal of Nanomaterials and Biostructures,
Journal Year:
2023,
Volume and Issue:
18(3), P. 1051 - 1063
Published: Sept. 20, 2023
In
this
research,
various
concentrations
of
manganese
dioxide
(MnO2)
is
composed
by
polyvinyl
alcohol
(PVA)
to
forming
PVA
/MnO2
films.
The
XRD
and
SEM
are
respectively
demonstrated
the
structure
morphological
characteristics
results
show
that
PVA/MnO2
films
fabricated
successfully.
demonstrate
MnO2
dispersed
evenly
along
polymeric
chains.
conductivity,
impedance
energy
density
were
measured
via
an
LCR
bridge
with
frequency
102
106
Hz.
There
increase
in
dielectric
from
64
for
95
PVA/0.06MnO2
at
105
Hz,
also
conductivity
increases
3.61x10-3
S/cm
5.33x10-3
PVA/0.06MnO2.
optical
recorded
UV/Vis
spectroscopy.
band
gap
reduced
5.01
eV
4.85,
4.71,
4.59
PVA/0.02MnO2,
PVA/0.04MnO2,
And
Urbach
tail
modified
1.72
3.12,
3.453,
3.66
respectively.
present
work
open
possibility
applied
different
devices
as
storage
systems
optoelectronics.
