Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 20, 2025
Abstract
Electrocatalytic
nitrate
reduction
(NO
3
RR)
offers
a
promising
approach
to
address
pollution
by
converting
harmful
nitrates
into
environment‐benign
or
valuable
products
like
nitrogen
gas
(N
2
)
ammonia
(NH
).
This
review
explores
the
mechanisms,
challenges,
and
catalysts
involved
in
NO
RR,
highlighting
role
of
catalyst
selectivity,
stability,
external
reaction
conditions.
The
discussion
also
covers
environmental
economic
benefits
RR
for
water
treatment,
alongside
potential
future
directions
scaling‐up,
system
integration,
expanding
research
tackling
related
nitrogen‐based
pollutants
as
well
real
world
applications.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(17)
Published: June 9, 2023
Natural
nitrogen
cycle
has
been
severely
disrupted
by
anthropogenic
activities.
The
overuse
of
N-containing
fertilizers
induces
the
increase
nitrate
level
in
surface
and
ground
waters,
substantial
emission
oxides
causes
heavy
air
pollution.
Nitrogen
gas,
as
main
component
air,
used
for
mass
ammonia
production
over
a
century,
providing
enough
nutrition
agriculture
to
support
world
population
increase.
In
last
decade,
researchers
have
made
great
efforts
develop
processes
under
ambient
conditions
combat
intensive
energy
consumption
high
carbon
associated
with
Haber-Bosch
process.
Among
different
techniques,
electrochemical
reduction
reaction
(NO
Small,
Journal Year:
2023,
Volume and Issue:
19(10)
Published: Jan. 22, 2023
Electrochemical
nitrate
(NO3-
)
reduction
to
ammonia
(NH3
offers
a
promising
pathway
recover
NO3-
pollutants
from
industrial
wastewater
that
can
balance
the
nitrogen
cycle
and
sustainable
green
NH3
production.
However,
efficiency
of
electrocatalytic
synthesis
remains
low
for
most
electrocatalysts
due
complex
reaction
processes
severe
hydrogen
precipitation
reaction.
Herein,
high
performance
RR)
is
demonstrated
on
self-supported
Pd
nanorod
arrays
in
porous
nickel
framework
foam
(Pd/NF).
It
provides
lot
active
sites
H*
adsorption
activation
leading
remarkable
yield
rate
1.52
mmol
cm-2
h-1
Faradaic
78%
at
-1.4
V
versus
RHE.
Notably,
it
maintains
over
50
cycles
25
h
showing
good
stability.
Remarkably,
large-area
Pd/NF
electrode
(25
cm2
shows
174.25
mg
,
be
candidate
device
application.
In
situ
FTIR
spectroscopy
density
functional
theory
calculations
analysis
confirm
enrichment
effect
nanorods
encourages
H
species
following
hydrogenation
mechanism.
This
work
brings
useful
strategy
designing
RR
catalysts
with
customizable
compositions.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2023,
Volume and Issue:
11(21), P. 7965 - 7985
Published: May 16, 2023
Excessive
discharge
of
nitrate
pollutants
has
caused
an
imbalance
in
the
nitrogen
cycle,
which
threatened
human
health
and
ecosystems.
Clean
electrocatalytic
reduction
technology
can
convert
into
high
value-added
ammonia
to
control
water
pollution,
truly
realizing
"turning
waste
treasure".
This
review
highlights
latest
mechanisms
proposed
by
combining
situ
characterization
discusses
various
intermediates
produced
during
reaction
process
key
steps
that
determine
rate.
Meanwhile,
four
common
catalyst
synthesis
strategies
are
systematically
summarized.
These
have
exhibited
preeminent
results
terms
conductivity
active
sites
inhibition
side
effects.
Finally,
challenges
difficulty
(NRA)
development
main
direction
future
discussed.
The
engineering
for
increasing
stability
performance
also
aims
provide
guidance
efficient
conversion
promotes
advancement
sustainable
chemistry.
ACS Catalysis,
Journal Year:
2025,
Volume and Issue:
15(3), P. 1672 - 1683
Published: Jan. 16, 2025
The
electrochemical
nitrate
reduction
reaction
to
ammonia
(NRA)
is
gaining
increasing
attention
as
an
eco-friendly
approach
convert
harmful
pollutants
into
high-value
product
ammonia.
NRA
involves
two
critical
rate-determining
steps:
hydrogenation
of
the
*NO
and
*NOH
intermediates.
composite
Ni
Cu
has
been
demonstrated
exhibit
synergistic
catalytic
effects;
however,
research
on
combination
CuO
remains
limited.
Herein,
advanced
Ni-doped
copper
oxide
catalyst
with
a
hollow
square
morphology
(Ni–CuO)
reported
Faradaic
efficiency
95.26%
at
−0.8
V
vs
RHE
high
yield
rate
0.94
mmol
h–1
cm–2,
demonstrating
selectivity
stability.
Complementary
analyses
that
active
hydrogen
generated
sites
facilitates
*NOx
adsorbed
sites.
Theoretical
computations
further
confirm
thermodynamic
viability
this
bimetallic
mechanism.
Furthermore,
Al–NO3–
battery
open-circuit
voltage
was
constructed
by
using
Ni–CuO
cathode.
This
work
presents
synergistically
modulated
for
complex
processes
introduces
highly
efficient
capable
simultaneous
NH3
synthesis
electrical
energy
conversion,
underscoring
its
potential
in
catalysis
development
chemical
industries.
