Green Energy and Environmental Technology,
Год журнала:
2024,
Номер
3
Опубликована: Авг. 12, 2024
Nitrate
widely
exists
in
industrial
wastewater
and
polluted
groundwater
as
an
environmental
pollutant,
resulting
severe
risks.
The
nitrate-to-ammonia
electrochemical
reduction
reaction
(NO3RR)
is
recognized
the
most
compelling
solution
for
reducing
pollutants
(NO)
into
value-added
product
ammonia
(NH3)
due
to
compatibility
with
renewable
energy.
In
recent
years,
copper-based
electrocatalysts
have
emerged
one
of
promising
methods
NO3RR
owing
their
relatively
high
catalytic
activity
cost-effectiveness,
also
minimizing
impact.
From
this
perspective,
we
summarize
function
catalysts
NO3RR.
We
provide
overview
current
achievements
different
Furthermore,
perspective
raises
future
challenges
designing
highly
effective
long-term
stable
industrial-scale
applications
well
clarifying
pathways
by
theoretical
experimental
characterization
tools.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 5, 2025
Abstract
The
renewable‐energy‐powered
electroreduction
of
nitrate
(NO
3
RR)
to
ammonia
emerges
as
a
generalist
for
contamination
remediation,
green
synthesis,
and
even
advanced
energy
conversion,
garnering
significant
interest.
However,
it
comes
across
limited
yield
selectivity
due
the
imbalance
active
hydrogen
(H
*
)
supply
within
cutting‐edge
single‐center
Cu‐based
materials.
Herein,
secondary
Ce
entity
is
engineered
into
Cu/MoO
2
@C
substrate
by
thermal
treatment
Ce‐doping
NENU‐5
precursors
provide
H
effectively.
A
high
NH
rate
(20.3
±
0.7
mg
h
−1
cat.
NO
−
−to−NH
Faradaic
efficiency
(92
3%)
at
−0.4
V
(vs
RHE)
can
be
reached
in
5%Ce‐Cu/MoO
@C,
ranking
among
recently
reported
state‐of‐the‐art
catalysts.
core
this
boosting
performance
lies
dual‐site
tandem
catalysis,
which
Cu
site
adsorbs
activates
,
dissociates
water
generate
respectively.
And
spillover
from
vicinal
x
intermediates
on
promotes
hydrogenation
generation
with
selectivity.
Theoretical
calculations
further
indicate
that
engineering
optimizes
electronic
properties,
activation
adsorbed
decreases
barrier
rate‐determining
step
catalysis.
These
findings
consolidate
positive
role
rare
earth
center
highlight
its
corresponding
catalysis
sustainable
synthesis.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 8, 2025
Abstract
Nitrate
pollution
from
agricultural
runoff
and
industrial
discharge
poses
severe
environmental
health
risks,
necessitating
sustainable
remediation.
Electrocatalytic
nitrate
reduction
reaction
(NO
3
RR)
offers
a
promising
solution
by
converting
to
ammonia,
where
catalysts
with
high
activity
selectivity
are
needed.
Here,
it
is
reported
that
layered
double
hydroxides
(LDHs)
can
achieve
highly
efficient
NO
RR
performance
through
composition
engineering
in
situ
reconstruction.
It
shown
ternary
CuZnFe
LDH
catalyst
leverage
synergistic
effects
controlled
surface
reconstruction
for
stable
of
ammonia.
During
RR,
copper
compound
reduced
metallic
state
enhanced
activity,
reconstructed
iron
oxide
stabilizes
the
structure
improves
zinc
selectively
leached
expose
active
sites.
In
ATR‐FTIR
spectroscopy
reveals
initiates
nitrate‐to‐nitrite
conversion,
while
drives
ammonia
formation.
As
result,
achieves
Faraday
efficiency
95%
an
yield
51
mg
h⁻
1
cm⁻
2
,
current
density
0.64
A
at
−0.9
V
vs.
RHE,
stability.
The
findings
provide
insightful
understanding
on
mechanism,
novel
strategies
design
tandem
advanced
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
NO
3
−
and
H
2
O
molecules
adsorbed
on
the
surface
of
Co–N–C-500
are
activated
dissociated.
The
generated
active
hydrogen
species
(*H)
can
promote
hydrogenation
intermediates
thus
increase
NH
yield.
