Research Square (Research Square),
Год журнала:
2022,
Номер
unknown
Опубликована: Июнь 13, 2022
Abstract
In
the
present
study,
modified
Fe
3
O
4
nanoparticles
were
fabricated
by
surface
coating
with
tryptophan
and
Iridium
co-precipitation
method
to
afford
@trp@Ir
magnetic
nanoparticles.
As-prepared
are
environmentally
benign
efficient
catalysts
for
reducing
organic
pollutants
such
as
4-nitrophenol
(4-NP),
4-nitroaniline
(4-NA),
1-bromo-4-nitrobenzene
(1-B-4-NB).
The
key
parameters
that
affect
catalytic
activity
like
temperature,
catalyst
loading,
concentration
of
agent
NaBH
optimized.
obtained
results
proved
is
an
nitroaromatics
at
ambient
temperature
a
minimal
loading
0.0025%.
complete
conversion
4-aminophenol
took
only
20
seconds
0.0025%
rate
constant
0.0522
s
−
1
.
high
factor
(1.040
mg
)
turnover
frequency
(9
min
nanocatalyst
highlight
possible
synergistic
effect
two
metals
(Fe
Ir).
visible-light
photocatalytic
degradation
4-NP
was
also
investigated
in
presence
@trp@Ir.
completed
95.15%
efficiency,
photodegradation
(0.1507
about
twice
dark
(0.0755
).
recycled
reused
five
cycles
without
significant
reduction
efficiency
catalyst.
Chemical Engineering Journal,
Год журнала:
2024,
Номер
489, С. 151241 - 151241
Опубликована: Апрель 12, 2024
2D/2D
heterojunctions
between
ultrathin
NiFe-CO3
layered
double
hydroxide
(LDH)
and
varying
amounts
of
birnessite
(δ-MnO2)
were
prepared
using
an
environmentally
friendly
cost-effective
self-assembly
method.
The
samples
have
proven
to
be
efficient
in
their
application,
mitigating
NOx
emissions
via
a
photooxidative
process.
effective
creation
NiFe–LDH/MnO2
has
been
verified
through
variety
characterisation
techniques,
such
as
XRD,
FT-IR,
TGA,
XFR,
N2
adsorption–desorption
isotherms,
HRTEM
SEM
images,
EDX,
XPS.
Photocatalytic
measurements
indicated
that
the
heterojunction
formed
NiFe-LDH
MnO2
modifies
its
photoconductive
behaviour,
significantly
enhancing
visible
light
photocatalytic
performance
partners.
Finally,
optimal
relationship
process
was
studied.
It
found
ratio
10:1,
respectively,
exhibited
superior
properties
compared
other
composites,
highlighting
best
degradation
NO
under
notable
stability
during
recycling
Separations,
Год журнала:
2023,
Номер
10(2), С. 77 - 77
Опубликована: Янв. 22, 2023
Photocatalysis
is
a
remarkable
methodology
that
popular
and
applied
in
different
interdisciplinary
research
areas
such
as
the
degradation
of
hazardous
organic
contaminants
wastewater.
In
recent
years,
clay-based
photocatalyst
composites
have
attracted
significant
attention
field
photocatalysis
owing
to
their
abundance,
excellent
light
response
ability,
stability.
This
review
describes
combination
clay
with
focusing
photocatalysts
TiO2,
g-C3N4,
Bi-based
compounds
for
degrading
pollutants
Clay-based
more
active
surface
sites,
resulting
inhibited
particle
agglomeration.
Moreover,
enhances
creation
radicals
pollutant
by
separating
photogenerated
electrons
holes.
Thus,
functions
are
not
only
act
template
inhibit
agglomeration
main
but
also
suppress
charge
recombination,
which
may
lengthen
electron–hole
pair’s
lifespan
boost
activity.
several
types
photocatalysts,
type
photocatalyst,
were
compared
understand
function
interaction
photocatalyst.
this
study
summarizes
wastewater
remediation
concludes
considerable
potential
low-cost,
solar-powered
environmental
treatment.
Catalysts,
Год журнала:
2024,
Номер
14(12), С. 897 - 897
Опубликована: Дек. 6, 2024
This
study
focuses
on
the
synthesis
of
a
novel
layered
double
hydroxide
and
its
application
in
two
environmental
remediation
processes.
Graphene
oxide,
two-dimensional
material,
has
potential
applications
this
field.
However,
tendency
to
agglomerate
restricts
usability.
Our
objective
was
increase
morphology
performance
(LDH)
by
combining
GO
with
hydrotalcite.
The
LDH/GO
nanohybrids
were
utilized
as
photocatalysts
for
degradation
methylene
blue
(MB)
dye
investigated
sorbents
acid
red
(A.R)
water.
In
order
achieve
objective,
ZnAl-NO3
LDH
synthesized
using
co-precipitation
method,
Zn:Al
ratio
~3.
Subsequently,
intercalated
varying
ratios
as-received
graphene
oxide.
An
array
analytical
techniques,
including
X-ray
diffraction
(XRD),
Fourier
transform
infrared
spectroscopy
(FT-IR),
photoelectron
(XPS)
measurements,
N2
physisorption,
scanning
electron
microscopy–energy-dispersive
analysis
(SEM-EDX),
diffuse
reflectance
UV–vis
spectra
(DR
UV-vis),
employed
examine
physicochemical
properties
LDH.
These
techniques
confirmed
that
obtained
material
is
zinc-aluminum
hydrotalcite
GO.
addition
oxide
(GO)
structure
improved
As
result,
composite
ZnAl-LDH-10
shows
significant
field
photocatalytic
MB.
Additionally,
incorporation
enhanced
absorption
light
visible
region
spectra,
leading
elimination
A.R
compared
without
or
other
