Single-atom
catalysts
offer
exceptional
performance
but
face
practical
challenges
due
to
complex
synthesis
and
low
efficiency
caused
by
mass
transfer
resistance.
In
this
study,
based
on
a
simple
one-step
pyrolysis
method,
we
designed
Cu
single-atom
catalyst
with
high
active
site
exposure
locally
electron-deficient
environment
(HE
Cu1-N4)
achieve
maximum
utilization
in
electrocatalytic
nitrate
reduction
(NO3RR).
Using
advanced
characterization
techniques,
confirmed
that
its
unique
3D
structure
enhances
atom
reduces
(NO3-)
Synchrotron
radiation
DFT
calculations
showed
adjusting
the
coordination
induces
local
effect
atoms,
increasing
electrostatic
attraction
NO3-.
HE
Cu1-N4
achieved
100%
NH3
selectivity
across
wide
range
of
NO3-
concentrations,
an
yield
(5.09
mg
h-1
mgcat-1)
nearly
7-fold
higher
than
conventional
unmodified
(Cu1-N2,
0.73
mgcat-1).
Under
pilot-scale
conditions,
demonstrated
strong
resistance
interference
excellent
stability
water
systems.
A
modification
method
enhanced
single
atoms
catalysts,
significantly
improving
catalytic
activity
material.
Moreover,
straightforward
strategy
holds
promise
for
large-scale
production
paving
way
engineering
applications.
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.
Analytical Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
field
of
electrochemical
ammonia
synthesis
has
made
rapid
advancements,
attracting
a
large
number
scientists
to
contribute
this
area
research.
Accurate
detection
is
crucial
in
process
for
evaluating
the
efficiency
and
selectivity
electrocatalysts.
In
study,
we
systematically
investigate
indophenol
blue
method
detection,
examining
effects
key
factors
such
as
solution
pH,
nitrate
concentration,
metal
ion
concentration
on
measurement
accuracy.
Based
experimental
optimization
mathematical
algorithms,
propose
an
iterative
refinement
supported
by
custom-developed
code.
This
automates
generation
adjustment
calibration
curves,
reduces
errors,
enhances
precision,
offering
valuable
framework
quantitative
other
small
molecules
synthesis.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Abstract
Developing
sustainable
technologies
for
ammonia
production
through
electrochemical
reactions
offers
a
promising
alternative
by
leveraging
renewable
energy
sources
to
produce
under
ambient
conditions.
These
methods
include
nitrogen
reduction
reaction
(NRR),
nitric
oxide
(NORR),
nitrite
(NO
2
RR),
and
nitrate
3
RR).
Optimizing
efficiency
(EE)
in
synthesis
has
become
increasingly
crucial
as
commercialization
approaches.
Herein,
this
work
comprehensive
study
of
system
EE
improvements
the
theoretical
voltage
calculations
based
on
pH
expansion
bifunctional
catalysts
like
transition
metal
dichalcogenides
(TMDs),
which
can
efficiently
catalyze
oxygen
evolution
(OER)
synthesis.
The
review
summarizes
pH‐dependent
redox
potential
Pourbaix
diagrams
NRR,
NO
RR,
offering
insights
into
potential‐pH
regions
where
oxides
are
reduced
NH
.
Incorporating
design
enables
researchers
minimize
losses
better
improve
overall
performance.
Finally,
wraps
up
exploring
roles
TMD
different
mechanisms
identifying
areas
improvement.
broader
impact
lies
its
transform
alignment
with
global
efforts
reduce
greenhouse
gas
emissions.
ChemElectroChem,
Journal Year:
2025,
Volume and Issue:
12(4)
Published: Jan. 31, 2025
Abstract
Electrochemical
nitrate
reduction
reaction
(NO
3
−
RR)
represents
a
promising
ammonia
(NH
)
production
approach
and
has
garnered
significant
attention
in
recent
years.
Owing
to
the
highly
tunable
electronic
structures
physicochemical
properties,
alloy
materials
have
emerged
as
efficient
catalysts
for
electrochemical
NO
RR.
This
review
systematically
examines
advancements
including
binary
alloys
multi‐metal
RR,
comprehensively
analyzing
their
structure,
catalytic
activity,
mechanisms
In
addition,
relationship
between
catalysts′
composition,
active
sites,
activity
are
described,
aiming
elucidate
underlying
principles
high
guide
rational
design
of
future
catalysts.
Finally,
this
addresses
challenges
proposes
directions
research
development.
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
crucial
role
of
heteroatom
doping-induced
coordination
symmetry
breaking
in
SACs
is
reported
and
provides
vital
insights
into
the
impact
microenvironments
on
electrocatalytic
mechanisms
rational
design
NO
3
RR
catalysts.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 31, 2025
It
is
still
challenging
to
develop
an
effective
strategy
simultaneously
enhance
the
activity
and
stability
of
electrocatalysts
for
electrocatalytic
nitrate
reduction
reaction
(eNO3RR).
Herein,
taking
metallic
cobalt
as
example,
it
demonstrated
that
construction
low-coordinated
nanosheets
(L-Co
NSs)
by
H2
plasma
etching
electrodeposited
(Co
can
greatly
eNO3RR.
Compared
with
Co
NSs,
at
-0.4
V
versus
RHE,
removal
rate,
ammonia
partial
current
density,
yield
are
increased
L-Co
NSs
from
82.14%
98.57%,
476
683
mA
cm-2,
2.11
2.54
mmol
h-1
respectively.
In
addition,
demonstrate
negligible
decay
after
30
cycles
test,
while
show
significant
decline.
situ
electrochemical
characterizations
theoretical
calculations
verify
abundance
vacancies
in
not
only
contribute
optimized
electronic
structure
enhanced
desorption
key
intermediate
boost
but
also
facilitate
transformation
Co(OH)2
Co0
promote
stability.
Furthermore,
exhibit
favorable
performance
removing
simulated
wastewater
air
discharge-electrocatalytic
cascade
system
produce
ammonia.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Abstract
The
rational
design
and
development
of
application‐oriented
advanced
functional
catalysts
is
crucial
for
facilitating
the
conversion
nitrogen
oxides
into
high‐value
ammonia.
Herein,
biomass
derived
from
pomelo
peel,
which
rich
in
metal
complex
groups
exhibits
a
metallic
foam‐like
framework,
utilized
as
precursor.
Iron
carbide
(Fe
3
C)
active
sites
are
incorporated
locally
2D,
globally
3D
biochar
structure,
enabling
multi‐scenario
green
synthesis
ammonia
integrated
energy
utilization.
As
catalyst,
Fe
C‐BC
achieved
an
yield
rate
up
to
102120.53
µg
h⁻¹
mg
cat
⁻¹,
with
maximum
selectivity
100%.
A
flow‐based
electrolysis
system
featuring
not
only
facilitated
continuous
but
also
enhanced
solar
harvesting.
Additionally,
nitrate
battery
employing
anode
exhibited
high
output
enabled
self‐driven
synthesis,
offering
novel
insights
operational
solutions
future
production.
Density‐functional‐theory
calculations
confirmed
that
C
actively
reduces
barrier
key
steps
eNitRR
process
while
accelerating
water
dissociation
promote
sustained
proton
supply.
These
findings
collectively
provide
promising
foundation
advancing
ammonia,
emphasizing
both
efficient
catalytic
performance
sustainable
integration.
