Palladium Married with MBene Multilayers: Enabling Intensified Hydrogen Spillover for Efficient Nitrite‐to‐Ammonia Electroreduction
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 8, 2025
Abstract
Electrochemical
nitrite
reduction
reaction
(NO
2
RR)
has
emerged
as
a
promising
alternative
approach
for
ammonia
(NH
3
)
production,
offering
both
energy
efficiency
and
environmental
sustainability.
The
rational
regulation
of
active
hydrogen
(*H)
is
pivotal
NO
−
‐to‐NH
conversion,
yet
it
remains
significant
challenge
in
the
context
RR.
In
this
study,
molybdenum
boride
(MBene)
multilayers
are
introduced
an
electronic
support
to
integrate
with
palladium
(Pd)
nanoparticles,
creating
dual
catalytic
sites
that
effectively
balance
adsorption
*H
*NO
,
thereby
enabling
synergistic
catalysis
Theoretical
experimental
analyses
revealed
efficiently
generated
on
Pd
subsequently
undergoes
spillover
‐adsorbed
MBene
surfaces,
facilitating
accelerated
hydrogenation
NH
synthesis.
Consequently,
Pd/MBene
catalyst
demonstrated
exceptional
performance,
achieving
high
Faradaic
89%,
yield
rate
16.9
mg
h
−1
cat
remarkable
cycling
stability
at
low
applied
potential
‐0.3
V
versus
RHE.
Motivated
by
outstanding
RR
further
utilized
cathode
construct
Zn‐nitrite
formaldehyde‐nitrite
batteries.
These
systems
functionality
simultaneous
production
electricity
generation,
highlighting
versatile
efficient
sustainable
conversion.
Язык: Английский
A-Site Deficiency-Mediated Creation of Oxygen Vacancies in LaMnO3-δ Nanofibers for Efficient Nitrate Reduction
ACS Catalysis,
Год журнала:
2025,
Номер
unknown, С. 8094 - 8102
Опубликована: Май 1, 2025
Язык: Английский
Multiscopic Microenvironment Engineering in Nitrate Electrocatalytic Reduction
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 15, 2025
Abstract
The
electrocatalytic
reduction
of
nitrate
(NO
3
RR)
is
essential
for
environmental
remediation
and
the
nitrogen
cycle,
yet
effects
local
microenvironment
at
multiple‐level
on
catalysis
remain
largely
unclear.
This
review
focuses
analyzing
impact
microenvironmental
engineering
NO
RR
from
multiscopic.
Four
aspects
are
detailed
understanding
regulation
in
RR,
that
are,
electronic/molecular
interactions
(theory
simulations),
catalysts/reactants
(intrinsic
activity
modulation),
solution
(anion/cation
effect)
diffusion
(electrocatalytic
reactor
design).
Additionally,
relevant
situ
characterization
techniques
various
material
systems
(metals,
compounds,
carbon
composites,
organic
composites)
discussed
detail
can
modulate
reaction
microenvironment.
Given
potential
large‐scale
applications,
necessary
designs
also
summarized
industrial
level
optimized
performance.
concludes
by
outlining
future
research
directions
enhancing
microenvironment,
which
will
be
crucial
developing
efficient
catalysts
expanding
application
microenvironments.
Язык: Английский
Electronic structure modulation of lanthanum-doped Cu2O supported by GO to accelerate C–C coupling for electrocatalytic CO2 reduction towards multicarbon products
Chemical Engineering Science,
Год журнала:
2025,
Номер
313, С. 121744 - 121744
Опубликована: Апрель 29, 2025
Язык: Английский
Tunable Surface Charge Redistribution via Lattice Strain Engineering in B/Mo Co‐Doped NiV2O6 for High‐Power Supercapacitors
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 12, 2025
Abstract
The
pursuit
of
high‐energy‐density
supercapacitors
remains
challenged
by
the
irreversible
surface
charge
accumulation
and
sluggish
ion
dynamics
in
conventional
vanadate
cathodes.
To
address
these
limitations,
a
lattice
strain
engineering
strategy
is
devised
through
B/Mo
co‐doping
NiV
2
O
6
,
which
enables
dynamic
regulation
distribution
via
atomic‐level
stress
manipulation.
Density
functional
theory
(DFT)
calculations
demonstrate
that
high‐valence
Mo
6+
induces
compressive
(–4.4%)
to
strengthen
metal‐oxygen
covalency,
while
low‐electronegativity
B
3+
generates
tensile
(+
2.9%)
enhances
hydroxyl
affinity.
This
dichotomy
optimizes
OH
−
adsorption
energetics
0.28
eV
creates
gradient
oxygen
vacancy.
cooperative
dopant
effects
significantly
enhance
charge‐transfer
kinetics,
endowing
B/Mo‐NiV
/NF
electrode
with
superior
specific
capacitance
2850
F
g
−1
(1
140
C
)
at
1
A
.
In
situ
Raman
reveals
reversible
vacancy
migration
along
(004)
crystallographic
planes
during
cycling,
dynamically
dissipates
structural
stress.
solid‐state
asymmetric
supercapacitor
delivers
1.8
V
operational
window
remarkable
energy/power
density
(38.35
Wh
kg
/900
W
75%
capacity
retention
after
10
000
cycles.
Practical
viability
demonstrated
powering
20
parallel‐connected
light‐emitting
diodes
(LEDs).
work
pioneers
strain‐mediated
paradigm
for
durable
high‐power
energy
storage.
Язык: Английский
CuO/Bi2CuO4 Heterostructured Electrocatalyst for the Efficient Reduction of Nitrate to Ammonia
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 16, 2025
The
electrochemical
reduction
of
nitrate
to
ammonia
(NH3)
not
only
provides
an
effective
approach
balance
the
perturbed
nitrogen
cycle
for
addressing
environmental
issues
but
also
a
potential
technology
green
NH3
synthesis.
However,
process
is
limited
by
produced
intermediate-nitrite
that
tends
accumulate
on
cathode
surfaces
and
multiple
competing
reactions.
Herein,
CuO/Bi2CuO4-450
heterostructures
are
reported
as
efficient
electrocatalysts
reaction
with
extraordinary
catalytic
activities
selectivities
production.
optimized
catalyst
achieves
remarkable
Faradaic
efficiency
(96.49%)
exceptional
yield
rate
(9.17
mg
h-1
mgcat.-1)
at
-0.5
V
versus
RHE,
surpassing
most
Cu-based
systems.
characterization
results
theoretical
evidence
reveal
interface
effect
originating
from
strong
interaction
between
Bi2CuO4
CuO
tunes
electronic
structures
Cu
Bi
active
sites
intermediate
adsorption
lowers
rate-determining
step
barriers,
resulting
in
improved
performance.
This
work
offers
strategy
flexibly
develop
catalysts
promote
electrocatalytic
techniques
production
reduction.
Язык: Английский