Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 7, 2025
This
study
reports
fabrication
of
graphene-titanium
dioxide
(G-TiO2)
nanocomposites
with
varying
graphene
content
(0%,
25%,
50%,
and
75%)
through
a
sonication-assisted
co-precipitation
method.
The
synthesized
materials
were
analyzed
FTIR,
DRS,
SEM,
XRD
techniques,
which
confirmed
the
successful
formation
an
anatase-phase
TiO2
tetragonal
structure
crystallite
sizes
ranging
from
10
to
25
nm
after
calcination
at
600
°C
for
4
h.
addition
resulted
in
significant
reduction
bandgap
energy
3.2
eV
1.55
eV,
enhancing
material's
absorption
visible-light
spectrum.
nanocomposite
50%
loading
exhibited
strong
adsorption
highest
photocatalytic
efficiency,
achieving
98.29%
degradation
cationic
methylene
blue
dye
under
irradiation.
exceptional
performance
is
attributed
synergistic
effects
graphene,
including
improved
light
absorption,
enhanced
charge
carrier
separation,
increased
electron
transfer
efficiency.
Kinetic
analysis
revealed
that
followed
pseudo-first-order
reaction
kinetics.
Furthermore,
recycling
tests
demonstrated
structural
stability
reusability
(up
5
cycles)
nanocomposite,
indicating
its
potential
as
effective
photocatalyst
environmental
applications.
effectiveness
G-TiO2
mitigating
industrial
pollutants
also
underscores
significance
approach.
Results in Engineering,
Journal Year:
2024,
Volume and Issue:
23, P. 102597 - 102597
Published: July 22, 2024
This
study
aims
to
investigate
the
performance
of
corona
discharge
plasma
in
removing
textile
dyes,
especially
those
with
large
molecular
weight
and
complexity.
Reactive
Blue
21
was
selected
as
a
model
contaminant
due
size
exceeding
1000
g/mol,
contains
heavy
metals,
nonbiodegradable,
is
widely
used
industry
for
turquoise
blue,
but
rarely
studied,
its
removal
using
technology.
In
this
study,
generated
by
kV
voltage
generator
connected
point-to-plane
electrode,
adding
O2
gas
flow.
The
effects
pH,
dye
concentration,
exposure
time,
catalyst
addition
were
analyzed
based
on
color
COD
from
solution.
results
showed
that
time
affected
efficiencies.
For
60
minutes,
colour
efficiency
73.83
%
without
catalyst.
Fe2+
increased
100
within
50
degradation
82.93
%,
energy
yield
0.27
g/kWh
at
minutes.
research
proved
could
remove
complex
weight,
indicating
potential
eliminate
all
types
dyes.
Materials Research Express,
Journal Year:
2024,
Volume and Issue:
11(5), P. 055601 - 055601
Published: May 1, 2024
Abstract
TiO
2
/
g
-C
3
N
4
/biochar
(TCNBC)
catalysts
were
prepared
by
the
hydrolysis
method
for
photocatalytic
degradation
of
doxycycline
antibiotic
(DC),
with
biochar
obtained
from
pyrolysis
Phragmites
australis.
The
examined
using
scanning
electron
microscope
(SEM),
transmission
microscopy
(TEM),
energy
dispersive
x-ray
spectrometer
(EDX),
photoelectron
spectroscopy
(XPS),
diffraction
(XRD),
Fourier-transform
infrared
(FTIR),
photoluminescence
(PL),
and
ultraviolet-visible
diffuse
reflectance
(UV–Vis
DRS)
nitrogen
adsorption/desorption.
activity
results
showed
that
TCNBC
catalyst
exhibited
higher
catalytic
than
pure
or
.
Its
peak
activity,
achieving
a
decomposition
efficiency
91.93%
mineralization
81.50%,
can
be
attributed
to
synergistic
effect
biochar,
,
Even
after
four
cycles
use,
still
maintained
relatively
high
DC.
decreased
86.30%
recycling
events.
