Interfacial Engineering of Pillared Co(II) Metal–Organic Framework@NiMn-Layered Double Hydroxide Nanocomposite for Oxygen Evolution Reaction Electrocatalysis
Inorganic Chemistry,
Год журнала:
2025,
Номер
64(1), С. 361 - 370
Опубликована: Янв. 2, 2025
Clean
energy
conversion
and
storage
require
simple,
economical,
effective
electrode
materials
to
achieve
promising
results.
The
development
of
high-performance
electrocatalysts
with
adequate
stability
cost-effectiveness
is
essential
ensure
low
overpotentials
toward
the
oxygen
evolution
reaction
(OER).
Herein,
a
cobalt-based
metal-organic
framework
4,4,4-6T14
topology
in
combination
various
ratios
NiMn-layered
double
hydroxide
(Co-MOF@X%NiMn-LDH,
X
=
5,
10,
20,
40%)
applied
as
an
electrocatalyst
for
oxidation
water.
optimum
sample,
Co-MOF@20%NiMn-LDH
nanocomposite,
showed
overpotential
174
mV
at
current
density
10
mA
cm-2
reduced
Tafel
slope
64
dec-1
1
M
KOH,
which
makes
it
excellent
candidate,
significantly
superior
commercial
IrO2
most
MOF-
LDH-based
electrocatalysts.
Chronopotentiometry
tests
OER
over
several
hours
confirmed
that
these
have
been
sufficiently
stable.
Pillared
MOFs
can
obstruct
active
entities
from
NiMn-LDH
cubic
agglomeration,
thus
facilitating
mass
transportation
ensuring
continuous
exposure
sites.
Accordingly,
synthesized
composite
demonstrates
considerable
electrocatalytic
efficiency
OER,
consequence
porous
structure,
external
surface
area,
synergistic
effects
among
Co-MOF
samples.
Язык: Английский
A bimetallic CuFe layered double hydroxide supported on carbon black: An efficient and sustainable electrocatalyst for the electrochemical detection of Ornidazole
Journal of environmental chemical engineering,
Год журнала:
2025,
Номер
unknown, С. 115578 - 115578
Опубликована: Янв. 1, 2025
Язык: Английский
Simultaneous electrochemical detection of ascorbic acid, dopamine and uric acid using Au decorated carbon nanofibers modified screen printed electrode
P. Sakthivel,
K. Ramachandran,
K. Maheshvaran
и другие.
Carbon letters,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 11, 2024
Язык: Английский
Synthesis of CoTMPyP/electrochemical reduction modified multi-walled carbon nanotubes nanocomposites for the detection of purines and uric acid
Journal of Materials Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 30, 2025
Язык: Английский
Simultaneous Electrochemical Detection of Dopamine and Uric Acid Using Zn/Al-Layered Double Hydroxide-Modified Carbon Paste Electrodes
Journal of The Electrochemical Society,
Год журнала:
2025,
Номер
172(5), С. 057513 - 057513
Опубликована: Май 1, 2025
Here,
a
carbon
paste
modified
electrode
(CPME)
with
Zn/Al-layered
double
hydroxide
(Zn/Al-LDH)
was
developed
for
the
simultaneous
electrochemical
detection
of
dopamine
(DA)
and
uric
acid
(UA).
The
surface
morphology
structural
features
synthesized
Zn/Al-LDH
were
analyzed
using
scanning
electron
microscopy
X-ray
diffraction
analysis.
LDH-modified
sensor
exhibited
enhanced
adsorptive
properties,
significantly
improving
preconcentration
targets.
Electrochemical
characterization
square
wave
voltammetry
demonstrated
that
structure
plays
crucial
role
in
increasing
sensitivity
due
to
its
high
area
favorable
electrostatic
interactions
by
separate
from
cell.
Under
optimized
conditions
(preconcentration
pH
6.0
an
cell
7.0),
excellent
linearity
across
biologically
relevant
concentrations,
ranging
0.2
20
μM,
phosphate-buffered
saline
(PBS),
synthetic
urine,
cerebrospinal
fluid,
limits
68
nM
UA
71
DA.
Recovery
studies
confirmed
sensor’s
reliability
complex
biological
matrices,
recoveries
90%
120%.
Compared
existing
sensors,
Zn/Al
CPE
offers
promising,
selective,
efficient
platform
neurotransmitter
metabolite
analysis
samples.
Язык: Английский