Current Progress in Layered Double Hydroxide-Based Electrocatalyst for Urea Oxidation: Insights into Strategies and Mechanisms
Chemical Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
The
urea
oxidation
reaction
(UOR)
presents
a
more
favorable
alternative
to
the
conventional
oxygen
evolution
(OER)
for
hydrogen
production
due
its
lower
thermodynamic
potential.
This
method
offers
advantages
over
traditional
approaches
operating
conditions
and
potentially
costs.
However,
complex
6-electron
transfer
process
in
UOR
limits
performance.
Researchers
are
tackling
this
challenge
by
designing
advanced
electrocatalysts
with
optimized
properties,
such
as
porosity,
heterostructures,
controlled
defects,
surface
functionalization,
fine-tuned
electronic
structures.
significant
progress
catalyst
design
holds
promise
future
of
clean
energy
technologies.
In
view
this,
layered
double
hydroxides
(LDHs)
attracting
interest
their
potential
role
electrolysis
synergistic
cooperation
metals,
flexible
configuration,
tunable
composition
unique
structure.
review
examines
recent
advancements
synthesis
LDH-based
catalysts.
Beyond
highlighting
breakthroughs
catalysts,
critically
stresses
strategies
challenges
towards
conversion.
Moreover,
comprehensive
approach
provides
valuable
forward-looking
perspective
on
research
directions.
Язык: Английский
Triphenylamine-Substituted Ni(II) Porphyrins for Urea Electro-oxidation
Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 23, 2024
Porphyrin-based
molecular
catalysts
possess
a
typical
aromatic
macrocyclic
structure
regarding
their
metal
centers
and
coordination
frameworks,
allowing
for
the
development
of
promising
electrocatalysts
through
precise
selection
porphyrin
ligand.
However,
reports
on
metalloporphyrins
as
electrocatalytic
urea
oxidation
reaction
(UOR)
remain
scarce.
With
these
considerations
in
mind,
triphenylamine-Ni(II)
(NiPor-TPA)
was
synthesized
solvothermal
approach
from
5,10,15,20-tetrakis
[4-(diphenylamino)phenyl]porphyrin
nickel(II)
acetate
this
work.
Experimental
results
reveal
that
introduction
Ni
species
can
serve
active
sites
activate
efficiently,
thus
prepared
deliver
better
activity
than
metal-free
TPA.
The
NiPor-TPA
electrode
delivers
lowest
potential
1.34
V
versus
reversible
hydrogen
(RHE)
at
10
mA
cm
Язык: Английский
Ball-milled Ni@Mo2C/C nanocomposites as efficient electrocatalysts for urea oxidation
Environmental Science and Pollution Research,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
Язык: Английский
Sub-3 nm Pt3Ni nanoparticles for urea-assisted water splitting
Advanced Composites and Hybrid Materials,
Год журнала:
2025,
Номер
8(2)
Опубликована: Фев. 24, 2025
Язык: Английский
Carbon-constrained heterogeneous Ni-Mo telluride for efficient urea oxidation
Chinese Chemical Letters,
Год журнала:
2025,
Номер
unknown, С. 110999 - 110999
Опубликована: Фев. 1, 2025
Язык: Английский
Insight into the High Activity of Nickel Phosphide Precatalysts for Urea Oxidation
The Journal of Physical Chemistry C,
Год журнала:
2024,
Номер
128(45), С. 19436 - 19444
Опубликована: Ноя. 4, 2024
The
quest
for
advanced
Ni-based
(pre)catalysts
the
urea
oxidation
reaction
(UOR)
has
been
significantly
impeded
by
a
lack
of
understanding
regarding
catalytic
structures
and
mechanisms
after
surface
reconstruction,
particularly
metalloid
compounds
like
nickel
phosphide.
This
study
systematically
investigates
UOR
performance
Ni(OH)2,
phosphate
(Ni–Pi),
Ni2P,
shedding
light
on
role
electronic
structure
morphology
in
dictating
activity.
Through
electrochemical
experiments
situ
spectroscopic
techniques,
we
demonstrate
that
superior
activity
Ni2P
originates
from
its
unique
conductivity
presence
residual
ions,
which
facilitate
formation
highly
active,
coordinatively
unsaturated
sites
following
reconstruction
as
well
faster
electron
transport.
A
novel
descriptor
based
reversibility
Ni3+/Ni2+
redox
couple
is
proposed
to
underscore
importance
NiOOH
regeneration
kinetics
process.
findings
reveal
rapid
dynamics
results
minimal
accumulation
intermediates,
indicative
high
efficiency.
research
not
only
elucidates
metal-nonmetal
but
also
offers
strategic
framework
design
efficient
electrocatalysts
sustainable
energy
applications.
Язык: Английский
An efficient NiCoSe4/NiCo-LDH/CF catalyst for the co-production of value-added formate and hydrogen via selective methanol electro-oxidation
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(38), С. 25791 - 25800
Опубликована: Янв. 1, 2024
An
enhanced
catalytic
performance
for
selective
methanol
electrooxidation
to
formate
was
achieved
derived
from
the
“shuttle-like”
role
of
Se
and
bimetallic
synergism
in
NCS/CF.
Язык: Английский
Coordination tuning of FeNi‐HMT Framework derived effective hybrid catalysts for water oxidation
ChemSusChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 27, 2024
FeNi-based
hybrid
materials
are
promising
oxygen
evolution
reaction
(OER)
catalysts
for
water
electrolysis
in
hydrogen
generation.
In
this
work,
the
coordination
tuning
of
FeNi-HMT
frameworks
was
achieved
by
simply
changing
Fe/Ni
ratios
using
hexamethylenetetramine
(HMT)
as
an
organic
ligand,
and
derived
FeNi
with
varied
compositions
were
probed
OER.
Incorporating
varying
amounts
Fe
Язык: Английский
Deciphering Doping Effects in a V-Doped Ni Catalyst for Hydrogen Electrooxidation
Inorganic Chemistry,
Год журнала:
2024,
Номер
63(44), С. 21293 - 21302
Опубликована: Окт. 23, 2024
The
improved
performance
of
soluble
metal-doped
Ni
catalysts
is
perplexed
by
the
evolvable
surface
structures
in
alkaline
electrolytes
for
hydrogen
oxidation
reaction
(HOR).
Herein,
V-doped
nanoparticles,
as
a
proof
concept,
were
carefully
evaluated
to
explore
intrinsic
function
enthetic
V-species
assisting
HOR
kinetic
improvement.
As
expected,
it
exhibits
mass-normalized
current
density
50.34
mA
mgNi–1,
more
than
12
times
that
counterpart
without
introduction
V.
Systematic
investigations
prove
V-species,
including
V-oxides
and
doped
V
atoms
at
outmost
layer,
would
be
dissolved
into
during
process.
remaining
V-dopants
inside
nanoparticles
rationally
weaken
hydroxyl
binding
energy
(OHBE)
Ni-based
surfaces,
thereby
accelerating
formation
water
molecules.
We
also
uncover
located
overstrong
branch
OHBE-described
volcano
plot
through
theoretical
calculations
alkali-metal
cation
probe
experiments,
weakening
OHBE
internal
V-doping
can
leave
activity
volcanic
apex.
Язык: Английский
Enhanced Urea Oxidation Reaction Through Layered Double Hydroxides: Insights From ZIF‐67‐Derived Nanostructures
EcoMat,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 10, 2024
ABSTRACT
Layered
double
hydroxides
(LDHs)
are
ionic
layered
compounds
characterized
by
anion‐containing
intermediate
regions
within
positively
charged
brucite‐like
layers.
LDHs
have
shown
high
electrochemical
activity
in
energy
conversion
systems
such
as
batteries
and
fuel
cells.
In
this
study,
we
developed
a
hierarchically
porous
nanostructure
derived
from
zeolitic
imidazolate
framework‐67,
which
was
subsequently
transformed
into
an
LDH
structure
with
varying
Ni
concentrations.
We
precisely
controlled
the
Ni‐to‐Co
ratio
investigated
how
different
mole
fractions
of
Co
influence
catalytic
selectivity
for
urea
oxidation
reaction
(UOR).
structures
low
content
(up
to
40%)
demonstrated
O
2
due
their
structural
instability
predominant
oxygen
evolution
(OER)
originating
ZIF‐67.
contrast,
(over
60%)
supressed
OER
exhibited
enhanced
UOR.
The
resulting
hollow
expanded
electrochemically
active
surface
could
improve
mass
transport
diffusion
at
electrode
interface,
leading
better
kinetics
higher
current
densities.
These
findings
provide
foundational
design
guideline
metal–organic
framework‐derived
image
Язык: Английский