ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(13)
Published: March 30, 2025
Abstract
This
research
investigates
the
influence
of
functionalized
reduced
Graphene
Oxide
(
f
‐rGO)
on
thermo‐physical
properties
nano
Calcium
carbonate
(CaCO
3
).
The
nanocomposite
was
developed
by
altering
wt.
%
‐rGO
(3
%,
4
and
5
%)
as
filler
into
CaCO
through
an
in‐house
portable
ball
mill
that
is
a
novel
environmentally
friendly
method.
Numerous
characterizations
were
employed
to
determine
effect
morphological,
structural,
thermal,
optical
characteristics
‐rGO/CaCO
nanocomposite.
doped
with
shows
minimum
bandgap
energy
1.49
eV.
Furthermore,
thermal
degradation
shifts
toward
higher
temperature
range
566–702
°C,
crystallinity
improved
incorporating
.
Nano
has
average
crystallite
size
86.08
nm
while
doping
reduces
67.99,
54.92,
49.81
nm,
respectively.
Thermal
conductivity
40.90
diffusivity
enhanced
1.924
mm
2
/s
when
‐rGO.
Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Dec. 14, 2023
Abstract
Industrial
chemical
pollutants
such
as
methylene
blue
(MB)
dye
are
released
into
the
water
body
and
potentially
cause
harm
to
human
aquatic
biosphere.
Therefore,
this
study
aims
synthesize
eco-friendly
nanocatalysts,
i.e.,
reduced
graphene
oxide
(rGO),
zinc
(ZnO),
oxide-zinc
(rGO@ZnO)
nanocomposites,
for
efficient
photocatalytic
degradation
of
MB
dye.
A
graphite
rod
was
obtained
from
waste
dry
cell
batteries
electrochemical
exfoliation
synthesis
(GO)
rGO.
For
ZnO
rGO@ZnO
Croton
macrostachyus
leaf
extract
used
a
reducing
capping
agent.
The
synthesized
nanocatalysts
were
characterized
using
UV–Vis
spectrophotometer,
Fourier
transform
infrared
spectroscopy,
X-ray
diffraction,
scanning
electron
microscopy
with
energy-dispersive
X-ray.
rGO,
ZnO,
applied
direct
sunlight
irradiation.
At
optimum
parameters,
efficiency
reached
up
66%,
96.5%,
99.0%,
respectively.
Furthermore,
kinetics
photodegradation
reaction
based
on
follow
pseudo-first-order
rate
constant
2.16
×
10
–3
min
−1
,
4.97
−3
5.03
Lastly,
promotes
low
catalyst
load
(20
mg)
Micromachines,
Journal Year:
2024,
Volume and Issue:
15(7), P. 849 - 849
Published: June 29, 2024
Transition
metal
sulfides
are
widely
used
in
supercapacitor
electrode
materials
and
exhibit
excellent
performance
because
of
their
rich
variety,
low
price,
high
theoretical
specific
capacity.
At
present,
the
main
methods
to
prepare
transition
include
hydrothermal
method
electrochemical
method.
In
order
further
improve
performance,
two
aspects
can
be
addressed.
Firstly,
by
controllable
synthesis
nanomaterials,
porous
structures
large
surface
areas
achieved,
thereby
improving
ion
transport
efficiency.
Secondly,
combining
with
other
energy
storage
materials,
such
as
carbon
oxides,
synergy
between
different
fully
utilized.
However,
future
research
still
needs
address
some
challenges.
guide
in-depth
research,
it
is
necessary
combine
current
research-derived
knowledge
propose
a
direction
for
development
sulfide
materials.
Results in Engineering,
Journal Year:
2024,
Volume and Issue:
23, P. 102748 - 102748
Published: Aug. 16, 2024
The
discharge
of
synthetic
dyes
into
water
bodies
poses
severe
environmental
risks
due
to
their
toxic
and
recalcitrant
nature.
This
study
explores
the
enhancement
photocatalytic
properties
cerium
dioxide
(CeO2)
nanorods
by
doping
with
lanthanum
(La)
improve
efficacy
in
degrading
aqueous
solutions
Congo
red
dye.
CeO2
were
synthesized
via
a
hydrothermal
method
subsequently
doped
varying
concentrations
La.
scanning
electron
microscopy
(SEM)
images
confirmed
rod-like
structures
(nanorods)
observed
for
all
samples,
while
energy-dispersive
X-ray
spectroscopy
(EDX)
homogeneous
incorporation
La
matrix.
diffraction
(XRD)
spectra
demonstrate
lattice
distortion
substitutional
defect.
Photocatalytic
experiments
revealed
that
La-doped
exhibited
significantly
enhanced
degradation
capabilities
compared
undoped
counterparts,
achieving
up
3-fold
kinetics
((30
±
2)
×
10−3
min−1)
counterparts
((11.5
0.4)
min−1).
Influence
various
parameters
affect
photocatalysis
performance
(i.e.,
contact
time,
initial
dye
concentration,
catalyst
dosage,
solution
pH
value)
also
investigated.
Radical
scavenger
reveal
superoxide
radicals
play
dominant
role
process.
Collectively,
these
findings
confirm
strategic
not
only
enhances
overall
efficiency
but
tailors
activity
towards
specific
pollutants
through
radical-mediated
pathways.
ACS Omega,
Journal Year:
2023,
Volume and Issue:
8(33), P. 30681 - 30693
Published: Aug. 8, 2023
Cationic
dyes
present
in
industrial
effluents
significantly
reduce
the
effectiveness
of
remediation
operations.
Considering
terrible
impact
these
pollutants
on
environment
and
biodiversity,
investigating
strategies
to
remove
potentially
harmful
compounds
from
water
is
becoming
an
increasingly
intriguing
issue.
In
this
work,
we
employed
a
simple
hydrothermal
technique
synthesize
Fe-doped
CdO
(2,
4,
6
wt
%)
nanostructures
assessed
their
efficacy
degrading
methylene
blue
(MB)
dye
inhibiting
growth
Staphylococcus
aureus
Escherichia
coli,
respectively.
Structural,
morphological,
optical
characterization
produced
nanomaterials
was
also
performed
using
X-ray
diffraction,
TEM,
UV
absorption
spectra.
The
photocatalytic
decomposition
MB
enhanced
(58.8%)
by
Fe
(6
%)-doped
catalysts
for
80
min
under
irradiation.
addition,
2.05–5.05
mm
inhibitory
zones
were
seen
against
Gram-positive
bacteria
(S.
aureus),
whereas
range
Gram-negative
(E.
coli)
1.65–2.75
mm.
These
shown
be
very
effective
inhibitors
beta-lactamase,
d-alanine-d-alanine
ligase
B,
fatty
acid
synthase
inhibitor
silico
molecular
docking
investigations.
