Multi-Functional Amorphous Nickel Phosphide Electrocatalytic Reduction of Nitrate for Ammonia Production: Unraveling the Anode-Driven Enhancement Mechanism
Sustainability,
Год журнала:
2025,
Номер
17(9), С. 3835 - 3835
Опубликована: Апрель 24, 2025
The
electrocatalytic
reduction
of
nitrate
(ERN)
to
ammonia
offers
a
promising
route
address
energy
shortages
and
environmental
pollution,
but
its
practical
application
is
hindered
by
low
selectivity
due
complex
eight-electron
transfer
pathways
high
consumption
(EC)
from
the
kinetically
sluggish
oxygen
evolution
reaction
(OER).
This
study
proposes
dual
strategy:
(1)
designing
multi-functional
self-supported
ANP
electrode
via
vapor
deposition
enhance
ERN
activity
(2)
replacing
OER
with
thermodynamically
favorable
anodic
reactions
(urea
oxidation
(UOR),
sodium
metabisulfite
(S(IV)OR),
sulfite
urea
(S(IV)/UOR))
reduce
EC.
cathode
achieved
removal
rate
(R%)
97.7%,
(SE%)
91.8%,
Faradaic
efficiency
(FE)
97.3%
at
−1.2
V,
an
yield
0.0616
mmol
h−1
mg−1
EC
8.239
kWh/kg,
while
in
situ-generated
atomic
hydrogen
(*H)
was
identified
as
key
improving
selectivity.
Replacing
alternative
significantly
improved
system
efficiency:
UOR
reduced
17.5%,
S(IV)OR
saved
27.6%
7.1%
higher
yield,
hybrid
S(IV)/UOR
32.1%
lower
12.6%
greater
than
OER.
These
differences
stemmed
variations
cell
voltage
production
rates.
work
provides
viable
approach
for
selective
nitrate-to-ammonia
conversion
guides
design
energy-efficient
systems
sustainable
nitrogen
recovery.
Язык: Английский
Hydrogen Spillover Mediated Nitrite Hydrogenation for Ultralow-Potential Ammonia Electrosynthesis over Platinum Nanoparticles Anchored on Cu Hydroxide Nanowires
Applied Catalysis B Environment and Energy,
Год журнала:
2025,
Номер
unknown, С. 125435 - 125435
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