Celal Bayar Üniversitesi Fen Bilimleri Dergisi,
Journal Year:
2023,
Volume and Issue:
19(4), P. 323 - 332
Published: Dec. 10, 2023
Nanomaterials
have
been
used
in
catalytic
degradation
of
organic
pollutants
also
act
as
catalysts
for
many
years.
Due
to
excellent
performances
metal-based
nanoparticles,
these
materials
extensively
various
hybrid
catalyst
synthesis.
The
main
subject
this
study,
heterogeneous
catalysis
is
a
low
cost
and
multi-purpose
process
pollutants.
Catalytic
such
as;
2-Nitrophenol,
Quinolin
Yellow
Rhodamine
B
was
investigated
by
using
Ni,
Co,
Pd
nanoparticles
modified
SiO2
based
nanomaterials.
co-doping
effect
on
the
prepared
nanomaterials
has
with
different
characterization
methods
terms
structural
morphological
features:
scanning
electron
microscopy,
UV/Vis
absorption
spectroscopy,
energy-dispersive
X-ray
spectroscopy
foruier-transform
infrared
spectroscopy.
highest
reduction
efficiencies
(97.6%
97.5%)
2-nitrophenol
obtained
Pd-PEG-AP@SiO2
respectively.
synthesized
Co-PEG-AP@SiO2
illustrated
higher
efficiency
(70.1%)
at
end
60s.
M-PEG-AP@SiO2
nanomaterial
(M:
Pd,Co,Ni)
can
be
able
utilized
contaminants
effectively.
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(41), P. 30127 - 30139
Published: Jan. 1, 2024
The
treatment
of
toxic
nitrophenols
in
industrial
wastewater
is
urgently
needed
from
environmental,
health,
and
economic
points
view.
current
study
addresses
the
synthesis
crosslinked
vinyl
polymer
poly(acrylonitrile-
Molecules,
Journal Year:
2024,
Volume and Issue:
29(8), P. 1842 - 1842
Published: April 18, 2024
Membrane
materials
with
osmium
nanoparticles
have
been
recently
reported
for
bulk
membranes
and
supported
composite
membrane
systems.
In
the
present
paper,
a
catalytic
material
based
on
dispersed
in
n-decanol
(nD)
or
n-dodecanol
(nDD)
is
presented,
which
also
works
as
an
emulsion
membrane.
The
hydrogenation
of
p-nitrophenol
(PNP)
carried
out
reaction
separation
column
acid-receiving
phase
nanodispersion
n-alcohols.
variables
PNP
conversion
process
p-aminophenol
(PAP)
transport
are
follows:
nature
alcohol,
flow
regime,
pH
difference
between
source
receiving
phases
number
operating
cycles.
results
all
cases
better
nD
than
nDD.
counter-current
regime
superior
to
co-current
flow.
Increasing
amplifies
process.
cycles
limited
five,
after
regeneration
dispersion
required.
apparent
rate
constant
(
ACS Omega,
Journal Year:
2024,
Volume and Issue:
9(49), P. 48014 - 48031
Published: Nov. 21, 2024
Water
contamination
by
nitro
compounds
from
various
industrial
processes
has
significantly
contributed
to
environmental
pollution
and
severely
threatened
aquatic
ecosystems.
Inexpensive,
efficient,
environmentally
benign
catalysts
are
required
for
the
catalytic
reduction
of
such
compounds.
This
study
reports
fabrication
nanocomposites
(NCs)
copper
oxide
nanoparticles
(CuO
NPs)
supported
on
a
kaolin
sheet
using
straightforward
simple
one-pot
synthesis
procedures
that
control
metal
precursor
ratios.
The
selected
as-synthesized
CuO/kaolin
NC
was
characterized
range
advanced
spectroscopic
microscopic
methods,
as
X-ray
diffraction
(XRD),
Fourier
transform
infrared
spectroscopy
(FT-IR),
ultraviolet–visible
(UV–vis)
spectroscopy,
field
emission
scanning
electron
microscopy
(FE-SEM),
transmission
(TEM),
energy
dispersive
(EDX),
high-angle
annular
dark-field
TEM
(HAADF-STEM),
N2
adsorption/desorption
analysis.
characterization
results
confirmed
successful
incorporation
CuO
NPs
into
sheets,
which
had
an
average
size
about
18.7
nm.
fabricated
used
heterogeneous
catalyst
efficient
4-nitrophenol
(4-NP)
4-aminophenol
(4-AP)
in
presence
sodium
borohydride
(NaBH4)
aqueous
system
at
room
temperature.
demonstrated
superior
performance
with
high
4-NP
conversion
4-AP
(>99%)
phase
(50
mL,
20
mg
L–1)
within
6
min.
In
addition,
reaction
kinetics
also
investigated,
followed
pseudo-first-order
equation
apparent
rate
constant
1.76
min–1.
Furthermore,
Arrhenius
Eyring
parameters
hydrogenation
were
calculated
order
investigate
process
more
detail.
Moreover,
exhibited
excellent
reusability
stability
over
seven
repeated
test
cycles
without
any
noticeable
decline
activity.
Therefore,
this
paper
could
provide
novel,
promising
clay-based
non-noble
nanocatalyst
reduce
system.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 13, 2025
To
minimize
the
use
of
chemicals
that
have
traditionally
been
needed
to
treat
toxic
organic
compounds,
a
WO3
electron
exchange
matrix
(EEMWO3),
which
requires
fewer
chemical
solvents
in
line
with
green
chemistry
engineering
principles,
was
developed
for
waste
degradation.
The
EEMWO3
tested
its
ability
remove
4-nitrophenol
and
2-nitrophenol,
were
chosen
as
models
common
oxidizing
compounds.
nitrophenol
added
an
initial
amount
7.19
×
10-5
mol,
is
larger
concentration
than
reported
cause
health
problems.
conversion
values
∼(10-50)%,
depending
on
type
substrate
used.
Ca.
10%
units
observed
be
reduced
by
BH4
-
W(V),
value
orders
magnitude
better
previously
EEM.
results
indicate
structure
surface
area
are
important
parameters
degradation
process.
monoclinic
hydrotungstite
(WO2(OH)2·H2O)
reactive
species.
same
also
affected
recyclability
process,
three
cycles
possible
commercial
WO3.
tungsten
oxide
functioned
active
EEM
without
entrapped
redox
species
skeleton,
indicating
one
does
not
worry
about
number
can
matrix.
It
concluded
efficient
treatment
method
toxic,
compounds
it
greener
whose
conventional
methods.
