Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 22, 2024
By
utilizing
Metal-organic
framework
(MOF)
materials
as
a
base,
constructing
electrocatalysts
with
heterogeneous
structures
offers
advantages
for
catalyzing
water
splitting.
In
this
study,
hollow
nanocatalyst,
Ir-MIL-88A@NiFe-LDHs,
was
prepared
by
growing
layered
double
hydroxides
(LDHs)
shell
on
MIL-88A
substrate.
The
catalyst
shows
excellent
oxygen
evolution
reaction
(OER)
performance
in
1.0
M
KOH
solution,
requiring
only
217
mV
overpotential
to
achieve
current
density
of
10
mA
cm
Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 17, 2024
Abstract
Electrochemical
nitrate
reduction
reaction
(NO
3
−
RR)
has
promising
prospects
for
green
synthesis
of
ammonia
and
environmental
remediation.
However,
the
performance
catalysts
at
high
current
density
usually
suffers
from
energy
barrier
)
to
nitrite
2
competitive
hydrogen
evolution.
Herein,
we
proposed
a
two‐step
relay
mechanism
through
spontaneous
redox
followed
electrochemical
by
introducing
low‐valence
Fe
species
into
Ni
P
nanosheets
significantly
enhance
NO
RR
industrial
density.
The
existence
bypasses
step
with
produce
O
,
regulates
electronic
structure
reduce
NH
thirdly
prohibits
evolution
consuming
excess
active
recover
species.
triple
regulations
via
during
reactions
guarantee
Fe‐Ni
P@NF
yield
120.1
mg
h
−1
cm
−2
Faraday
efficiency
more
than
90%
over
wide
potential
window
long‐term
stability
130
~1000
mA
.
This
work
provides
new
strategy
realize
design
electrocatalysts
densities.
Nanomaterials,
Год журнала:
2024,
Номер
14(8), С. 698 - 698
Опубликована: Апрель 17, 2024
Hydrogen
is
one
of
the
most
promising
green
energy
alternatives
due
to
its
high
gravimetric
density,
zero-carbon
emissions,
and
other
advantages.
In
this
work,
a
CoFeBP
micro-flower
(MF)
electrocatalyst
fabricated
as
an
advanced
water-splitting
by
hydrothermal
approach
for
hydrogen
production
with
highly
efficient
evolution
reaction
(HER)
oxygen
(OER).
The
fabrication
process
MF
systematically
optimized
thorough
investigations
on
various
synthesis
post-annealing
parameters.
best
electrode
demonstrates
HER/OER
overpotentials
20
mV
219
at
mA/cm2.
MFs
also
exhibit
low
2-electrode
(2-E)
cell
voltage
1.60
V
50
mA/cm2,
which
comparable
benchmark
electrodes
Pt/C
RuO2.
demonstrate
excellent
2-E
stability
over
100
h
operation
under
harsh
industrial
operational
conditions
60
°C
in
6
M
KOH
current
density
1000
flower-like
morphology
can
offer
largely
increased
electrochemical
active
surface
area
(ECSA),
systematic
lead
improved
crystallinity
MFs.
Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 22, 2024
By
utilizing
Metal-organic
framework
(MOF)
materials
as
a
base,
constructing
electrocatalysts
with
heterogeneous
structures
offers
advantages
for
catalyzing
water
splitting.
In
this
study,
hollow
nanocatalyst,
Ir-MIL-88A@NiFe-LDHs,
was
prepared
by
growing
layered
double
hydroxides
(LDHs)
shell
on
MIL-88A
substrate.
The
catalyst
shows
excellent
oxygen
evolution
reaction
(OER)
performance
in
1.0
M
KOH
solution,
requiring
only
217
mV
overpotential
to
achieve
current
density
of
10
mA
cm
