Catalysts,
Год журнала:
2024,
Номер
14(12), С. 844 - 844
Опубликована: Ноя. 22, 2024
Nanocomposites
containingTiO2
and
activated
carbon
were
obtained
by
the
sol-gel
method
in
presence
of
Brij
58
surfactant.
The
sample
with
a
higher
surface
area
(185.6
m2/g)
was
promoted
Fe
impregnating
it
aqueous
solution
Fe(NO3)3.
iron
loadings,
measured
using
X-ray
fluorescence,
0.83%,
3.30%
7.17%.
TiO2
anatase
identified
all
samples
diffraction
Raman
spectroscopy,
but
oxides
could
not
be
detected.
However,
infrared
spectroscopy
indicated
existence
Fe-O
Fe-O-Ti
bonds.
photoelectron
revealed
Fe2+
for
lower
content
mixture
Fe3+
7.17%
Fe.
UV-Vis
photoluminescence
showed
alongside
TiO2.
This
combination
led
to
new
properties
due
generation
intermediate
energy
levels
defects,
contributing
an
enhancement
photocatalytic
performance.
highest
photodegradation
efficiency
Congo
red
(84.46%)
under
visible
light
irradiation
acidic
conditions.
synergistic
contribution
dye
adsorption
demonstrated,
taking
into
account
ZPC
values
nanocomposites.
Kinetic
studies
completed
reaction
mechanisms
based
on
results
scavengers.
Journal of King Saud University - Science,
Год журнала:
2024,
Номер
36(5), С. 103158 - 103158
Опубликована: Март 7, 2024
The
current
study
uses
an
economical
and
ecologically
friendly
method
to
produce
gold
(Au)
nanoparticles
(NPs)
using
Polygala
elongata
leaf
(PEL)
extract
as
a
reducing
stabilizing
agent.
synthesized
materials
were
characterized
range
of
methods,
including
BET
analysis,
TEM-SAED,
FT-IR,
UV–Vis,
XRD.
Biogenic
AuNPs'
spherical
form
was
shown
by
SEM
TEM
investigations,
which
also
showed
that
the
particles'
size
10–20
nm,
their
distribution
homogeneous,
there
observed
minimal
aggregation.
production
biogenic
AuNPs
confirmed
observation
surface
plasmon
resonance
peak
in
absorption
spectra,
detected
at
540
nm.
Additionally,
studies
conducted
on
catalytic,
cytotoxic,
antioxidant,
anticancer
characteristics
AuNPs.
exhibited
adaptable
applications
heterogeneous
catalyst,
achieving
percentage
degradations
73
%
88
under
UV
light
irradiation,
particularly
catalyzing
reduction
Methylene
Blue
(MeB).
Furthermore,
antioxidant
properties
evaluated
DPPH
free
radical
scavenging
assay
regarding
rutin,
widely
used
antioxidant.
With
cytotoxicity
value
500
µg/ml,
produced
had
strong
dose-dependent
inhibitory
effect
development
lung
cancer
cell
line
(A549).
Therefore,
hold
potential
across
various
research
domains,
spanning
biological
industrial
sectors,
well
removal
harmful
contaminants
water
purification.
Materials,
Год журнала:
2024,
Номер
17(2), С. 431 - 431
Опубликована: Янв. 16, 2024
Acetaminophen
(C8H9NO2,
also
called
paracetamol)
is
an
active
metabolite
of
phenacetin
with
antipyretic
and
analgesic
effects
has
been
extensively
used
as
a
painkiller.
Currently,
the
problem
pharmaceuticals
in
water
sewage
common,
especially
highly
urbanized
countries.
Laboratory-scale
experiments
were
carried
out
using
adsorbent—granulated
activated
carbon
(WD-extra)—to
remove
acetaminophen
(ACT)
from
water.
The
initial
concentration
was
20
mg
ACT/dm3.
adsorption
kinetics,
influence
pH
on
dose
adsorbent
determined
under
batch
conditions.
ACT
more
efficient
when
solution
acidic
(at
2,
it
most
effective).
highest
percentage
removal
(99%)
obtained
for
WD-extra
10.0
g/dm3.
time
taken
to
establish
dynamic
equilibrium
system
60
min.
effectiveness
based
Freundlich
Langmuir
isotherms.
It
found
that
effectively
removed
solutions.
Crystals,
Год журнала:
2025,
Номер
15(4), С. 319 - 319
Опубликована: Март 27, 2025
Enhancing
the
photocatalytic
efficiency
of
oxide
materials
under
Vis
light
remains
a
significant
challenge
within
scientific
community.
Natural
zeolite–metal
composites
exhibit
enhanced
properties,
especially
due
to
zeolite’s
large
active
surface
area,
which
facilitates
incorporation
metal
nanoparticles
into
its
structure,
thereby
significantly
increasing
efficiency.
The
present
study
presents
synthesis
Na-zeolite-decorated
black-TiO2
by
impregnation
method,
in
order
improve
structural
characteristics
absorb
visible
light.
experimental
protocol
involves
two
main
steps:
first,
and
white-TiO2
nanocrystals
using
sol-gel
second,
preparation
hybrid
materials,
consisting
Na-zeolite
decorated
with
white-TiO2,
through
followed
thermal
treatment.
morpho-structural
optical
properties
as-synthesized
were
investigated
XRD,
SEM/EDX,
FTIR,
DRUV-VIS
analysis.
characterization
results
indicated
that
natural
zeolite
has
good
stabilization,
lamellar
texture
spherical
form
anatase-TiO2
being
highlighted
SEM.
In
case
black-TiO2,
adsorption
edge
is
slightly
shifted
range,
while
absorbs
only
ultraviolet
region.
above
showed
these
are
adequate
for
application
processes.
