Minerals,
Journal Year:
2024,
Volume and Issue:
14(12), P. 1268 - 1268
Published: Dec. 13, 2024
This
study
presents
the
synthesis
of
a
CuO-TiO2–saponite
ternary
nanocomposite
via
hydrothermal
method,
designed
to
efficiently
remove
bromocresol
green
dye.
Characterization
techniques,
including
X-ray
diffraction,
Fourier
transform
infrared
spectroscopy,
and
scanning
electron
microscopy,
confirmed
significant
interactions
between
metal
oxide
nanoparticles
clay
mineral
matrix.
Diffuse
reflectance
photoluminescence
analyses
revealed
narrow
band
gap
surface
defects,
such
as
oxygen
vacancies,
enhancing
material’s
photocatalytic
properties.
Under
UV
irradiation,
achieved
83%
discoloration
dye
within
150
min.
The
inhibitor
studies
identified
hydroxyl
superoxide
radicals
key
species
in
degradation
mechanism.
work
underscores
potential
clay-mineral-based
nanocomposites,
where
minerals
function
both
structural
support
enhancers
semiconductor’s
activity.
In
this
study,
varying
percentages
of
dysprosium
(Dy)
doped
zinc
oxide
(ZnO)
nanoparticles
(NPs)
were
synthesized
via
a
green
chemistry
approach
employing
the
co-precipitation
method.
The
effect
dopant
concentrations
(1%,
3%,
and
5%)
was
studied
with
help
various
structural,
morphological,
optical
studies.
elemental
composition,
morphological
properties
comprehensively
investigated
using
X-ray
photoelectron
spectroscopy
(XPS),
energy
dispersive
(EDX),
diffraction
(XRD),
Fourier-transform
infrared
(FTIR),
high-resolution
transmission
electron
microscopy
(HRTEM),
field
emission
scanning
(FESEM).
EDX
confirmed
presence
zinc,
oxygen,
in
samples,
while
XPS
analysis
indicated
Dy
+3
oxidation
state
all
dysprosium-doped
(Dy-ZnO)
nanoparticles.
XRD
done
Rietveld
refinement
χ2
value
1.91
for
3%
Dy-ZnO
1.56
5%
NPs
agglomerated
flower-like
morphology
observed
FESEM
images.
UV
absorption
studies
displayed
red
shift
maxima
increasing
Dy3+
concentration,
indicating
improved
light
capacity
enhanced
photocatalytic
activity.
Remarkably,
decoloration
efficiency
novacron
brown
reached
90%
Dy-ZnONPs
Dy.
This
research
highlights
promising
potential
as
efficient
photocatalysts
environmental
remediation
applications,
particularly
textile
dyes.
