Nano Express,
Год журнала:
2024,
Номер
5(4), С. 045005 - 045005
Опубликована: Окт. 8, 2024
Abstract
The
Sol–gel
method
was
used
to
synthesize
Cd-doped
ZnO
nanoparticles
at
different
doping
concentrations.
nanomaterials
crystal
structure
and
microstructure
were
explained
by
XRD
SEM
analysis
of
the
materials.
absorption
transmission
spectra
analyzed
explore
optical
properties
thin
films.
band
gap
decreases
from
3.26
3.12
eV
with
increase
Cd
concentration
in
ZnO.
shows
an
increasing
trend
electrical
conductivity
mobility
ZnO-based
MAPbI
3
photodetectors
show
substantial
responsivity
wavelength
range
365
635
nm.
highest
for
devices
FTO/
Zn
1-x
x
O/MAPbI
/Al,
having
=
0.05,
0.10
0.15,
upon
465
nm
(4
mW
cm
−2
)
illumination
are
∼0.192,
0.272,
2.1
μA
W
−1
,
respectively.
LDR
0.15
photodetector
is
two
times
higher
than
0.05
doped
photodetectors.
Our
studies
confirm
that
creates
narrowing
may
be
suitable
perovskite
photodetector.
Catalysts,
Год журнала:
2025,
Номер
15(1), С. 71 - 71
Опубликована: Янв. 14, 2025
In
this
study,
seeded
zinc
oxide
(Z-ZnO)
thin
films
were
fabricated
by
a
two-step
electrochemical
deposition
process.
Different
annealing
temperatures
(300,
400,
500,
and
600
°C)
investigated
to
determine
the
most
effective
temperature
for
photocatalytic
activity.
Comprehensive
analyses
conducted
using
X-Ray
Diffraction
(XRD),
scanning
electron
microscopy
(SEM),
UV–visible
spectrophotometry.
The
XRD
results
confirmed
formation
of
wurtzite
hexagonal
structure,
with
highest
crystallinity
observed
at
400
°C.
lowest
band
gap
value,
3.29
eV,
was
also
recorded
Z-ZnO
film
annealed
SEM
images
revealed
that
treated
°C
exhibited
well-defined
uniform
contributing
its
enhanced
properties.
efficiency
ZnO
(without
seeding
layer)
evaluated
through
degradation
tetracycline
hydrochloride
(TCH)
prove
effect
presence
primary
layer
on
efficiency.
without
69.8%.
By
applying
in
film,
has
been
increased
75.8%.
On
other
hand,
achieved
high
82.6%
over
300
min
photoelectrocatalytic
system.
obtained
are
highly
photocatalysts
photoelectrocatalysts,
offering
significant
potential
pharmaceuticals
pollutants
water.
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Май 7, 2025
Abstract
This
study
investigates
the
synthesis
and
photocatalytic
performance
of
CeO2/porphyrin
nanocomposites,
created
by
self-assembling
porphyrin
monomers
onto
CeO2
nanoparticles,
which
were
green-synthesized
using
Cleistocalyx
operculatus
leaf
extract.
The
resulting
composite
showed
enhanced
efficiency
for
degrading
organic
pollutants,
such
as
methylene
blue
rhodamine
B,
compared
to
individual
nanoparticles
free
aggregates.
characterized
SEM,
XRD,
FTIR,
EDX,
UV-Vis,
confirming
successful
their
crystalline
integrity.
TCPP
(Tetrakis(4-carboxyphenyl)porphyrin)
was
integrated
via
a
reprecipitation
method,
SEM
XRD
analysis
verified
uniform
incorporation
preserving
nanofiber
morphology
structure
with
an
average
size
9
nm.
CeO2/TCPP
exhibited
extended
visible
light
absorption,
shown
in
UV-Vis
diffuse
reflectance
spectra,
indicating
its
potential
applications
under
light.
Photocatalytic
tests
simulated
sunlight
demonstrated
significant
improvement
performance,
95.9%
degradation
Rhodamine
B
after
120
minutes,
particularly
at
CeO2:TCPP
ratio
10:1.
research
highlights
effective
synergy
between
materials,
providing
novel
approach
developing
efficient,
nanocomposites
environmental
remediation
light,
marking
contribution
technology.
