Applied Organometallic Chemistry,
Год журнала:
2024,
Номер
39(1)
Опубликована: Дек. 18, 2024
ABSTRACT
As
a
renewable
new
material
with
high
void
ratio,
large
adsorption
surface
area,
and
rate,
biomass
carbon
(BC)
is
promising
adsorbent,
which
has
received
wide
attention
for
the
degradation
of
dyes.
However,
physical
cannot
completely
remove
dyes,
there
also
risk
secondary
pollution.
ZnAl‐layered
double
hydroxide
(ZnAl‐LDH)
semiconductor
photocatalyst
abundant
active
sites
excellent
efficiency.
In
this
paper,
we
have
designed
oxide@biomass
(ZnAl‐LDO@BC)
formed
by
in
situ
grown
LDH
on
waste
poplar
wood
as
synergistic
photocatalytic
system.
BC
support
could
enhance
dispersity
layered
oxide
(LDO),
whereas
LDO
provide
photodegradation
function
to
BC.
Our
studies
indicate
that
prepared
ZnAl‐LDO@BC
presents
lower
bandgap
energy,
higher
complexation
efficiency
holes
electrons
than
delignified
(DB).
result,
increased
removal
rate
malachite
green
(MG)
85.8%,
3.5
times
DB.
The
maximum
was
close
98%,
capacity
1954
mg
g
−1
under
an
initial
concentration
200
L
MG
dye,
possible
mechanism
investigated.
study,
conversion
agroforestry
wastes
into
high‐value
materials
applied
dye
provides
pathway
production
stable,
sustainable,
superior
material.
Chemical Physics Impact,
Год журнала:
2024,
Номер
8, С. 100587 - 100587
Опубликована: Март 27, 2024
The
preparation
of
MgAl
Layer
Double
Hydroxide
(LDH)
was
performed
using
the
coprecipitation
method.
Pristine
LDH
calcined
at
500°C
to
produce
Oxide
(LDO).
two
materials
were
modified
via
restacking-delaminating
bioactive
compounds
from
flower
extract
Clitoria
ternatea
(CT)
LDH-CT
and
LDO-CT.
Modifications
are
enhance
stability
catalyst
structure,
allowing
its
higher
photocatalytic
activities
regeneration
use.
prepared
catalysts
characterized
XRD,
FT-IR,
UV-DRS,
BET,
SEM-EDX.
XRD
diffraction
pattern
showed
that
three
have
typical
patterns
commonly
observed
in
LDH-based
materials.
FT-IR
spectra
confirmed
LDO-CT
combined
precursor
has
lowest
bandgap
energy
with
highest
degradation
kinetics.
BET
SEM-EDX
characterization
shows
uniform
surface
pore
size
on
used
ciprofloxacin
photodegradation
under
UV
light.
optimal
dose
5
mg,
while
pH
5.
LDO-CT,
LDH-CT,
capacity
up
73.300%,
65.739%,
71.320%,
respectively,
within
120
minutes.
Repeated
use
third
cycle
resulted
%R
reaching
80.871%,
74.003%,
52.025%,
by
LDH.
Compared
pristine
LDH,
CT
intercalated
exhibited
more
excellent
stability.
Science & Technology Indonesia,
Год журнала:
2024,
Номер
9(2), С. 457 - 469
Опубликована: Апрель 2, 2024
Layered
Double
Hydroxide
(LDH)-derived
materials
exhibited
different
characteristics
from
LDH
precursors.
The
conversion
of
ZnAl
into
its
derivative
material
has
been
carried
out
to
find
the
best
catalyst
for
TC
degradation.
(LDH)-based
catalysts
in
this
study
have
effectively
synthesized
using
coprecipitation,
calcination,
and
restacking
procedures.
Oxide
(LDO)
is
derived
calcination
at
500°C.
was
also
modified
by
adding
Garcinia
mangostana
pericarp
extract
(GME).
XRD,
FT-IR,
UV-DRS,
SEM-EDX
were
used
investigate
catalyst.
typical
FT-IR
spectra,
whereas
LDO
showed
metal
oxide-like
ZnAl-GME
composite
displayed
combination
spectra
precursor
material.
XRD
diffraction
pattern
attributes
a
layered
material,
other
three
did
not.
Calcination
destroyed
structure
LDH,
addition
GME
generated
single-layered
composite.
decrease
both
particle
size
bandgap
energy.
At
an
ideal
pH
5,
batch
system
photodegradation
5
mg/L
Tetracycline
(TC),
employing
solar
light
irradiation.
holds
most
significant
catalytic
activity
structural
stability
through
fifth
regeneration
cycle,
degraded
up
100%
90
minutes.
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY (CHINESE VERSION),
Год журнала:
2024,
Номер
52(4), С. 100385 - 100385
Опубликована: Апрель 1, 2024
Wastewater
contaminated
with
antibiotics
requires
innovative
solutions
to
remove
such
pollutants
efficiently.
In
this
work,
Zn-Al
layered
double
hydroxide
(LDH)
adsorbent
supported
on
polyurethane
(PU)
(Zn-Al
LDH/PU)
was
synthesized
using
a
simple
co-precipitation
method.
The
material
characterized
XRD,
FTIR,
SEM,
TEM,
TGA,
zeta
potential,
and
hydrodynamic
size.
This
investigated
for
the
removal
of
cefixime
(CFX),
which
is
model
third-generation
cephalosporin
antibiotic.
LDH
phase
showed
typical
hexagonal
morphology
layer
sizes
larger
than
200
nm
in
diameter.
CFX
adsorption
PU,
LDH/PU
maximum
capacity
94.43,
57.17
mg/g
115.69
mg/g,
respectively.
Redlich-Peterson
Baudu
isotherm
models
were
found
be
best
fit
Zn-Al/PU,
equilibrium
time
175
min
250
kinetics
fitted
pseudo-second
order
indicating
chemisorption
diffusion
limited
process.
Numerous
types
bonding
between
functional
groups
both
PU
could
explain
mechanism.
selectivity
study
Sulfamethoxazole
Ciprofloxacin
different
concentrations
discussed.
.
recyclability
also
studied.
Also,
effect
temperature
at
(23,
35,
45,
55°C)
thermodynamic
parameters
(∆H°,
∆S°
∆G°)
calculated
showing
exothermic
spontaneous
process.The
MTT
assay
indicated
that
biocompatibility
nanostructures
enhanced
following
modification
demonstrating
regulated
minimal
cytotoxic
effects
towards
normal
liver
cell
line
(WRL-68).The
can
considered
as
promising
low-cost
antibiotic
from
wastewater
streams.
Indonesian Journal of Material Research,
Год журнала:
2024,
Номер
2(2), С. 40 - 46
Опубликована: Июль 26, 2024
The
removal
of
hazardous
anionic
dyes
from
wastewater
is
a
critical
environmental
challenge
due
to
their
toxic
effects
and
persistence
in
aquatic
systems.
This
study
investigates
the
adsorption
performance
new
composite
material,
consisting
MgAl
layered
double
hydroxide
(LDH)
Lignin
(MgAl
LDH/Lignin),
remove
three
different
dyes:
congo
red,
direct
yellow,
procion
red.
material
was
synthesized
thoroughly
examined
using
various
techniques,
including
X-ray
diffraction,
Fourier
transform
infrared
spectroscopy,
Brunauer-Emmett-Teller,
Barrett-Joyner-Halenda.
isotherm
studies
indicate
that
red
onto
LDH/Lignin
follows
Langmuir
model,
suggesting
monolayer
on
uniform
surface.
On
other
hand,
yellow
conforms
Freundlich
indicating
possibility
multiple
layers
being
adsorbed
surface
with
varying
properties.
maximum
capacities
for
were
found
be
75.76
mg/g,
51.55
74.63
respectively.
results
this
demonstrate
promising
capabilities
composites
as
highly
efficient
adsorbents
treatment
contaminated
dyes.
research
provides
valuable
insights
into
potential
these
address
pressing
issue
water
pollution
sustainable
manner.