Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
The
electrochemical
conversion
of
harmful
pollutant
nitrite
(NO
2
−
)
in
wastewater
to
NH
3
is
an
effective
strategy
for
water
remediation
and
production
value‐added
chemicals.
However,
achieving
high
yield
selectivity
challenging
due
the
low
catalyst
activity
competitive
H
N
4
byproducts.
Herein,
first
time,
Cu
single‐atom
electrocatalysts
on
TiO
(Cu
1
/TiO
are
designed
reduction
a
neutral
aqueous
electrolyte.
optimal
exhibits
exceptional
rate
21.2
mg
h
−1
cat
Faradaic
efficiency
96.0%
at
−1.0
V
(vs
RHE),
representing
one
best
electrocatalytic
performance
ever
achieved.
Impressively,
NO
(0.1
mol
L
can
be
completely
conversed
8
electrolysis.
experimental
studies
theoretical
calculations
uncover
that
single
atoms
narrows
bandgap
improves
electron
transfer
,
synergistically
activate
stabilize
*NO
intermediate,
reduce
energy
barrier
rate‐determining
step
(*NH
→NH
),
thus
resulting
remarkable
.
This
study
provides
new
simultaneous
ambient
conditions
by
using
catalysis.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(26)
Published: April 22, 2024
Abstract
The
controlled
synthesis
of
metal
nanomaterials
with
unconventional
phases
is
significant
importance
to
develop
high‐performance
catalysts
for
various
applications.
However,
it
remains
challenging
modulate
the
atomic
arrangements
nanomaterials,
especially
alloy
nanostructures
that
involve
different
metals
distinct
redox
potentials.
Here
we
report
general
one‐pot
IrNi,
IrRhNi
and
IrFeNi
nanobranches
hexagonal
close‐packed
(hcp)
phase.
Notably,
as‐synthesized
hcp
IrNi
demonstrate
excellent
catalytic
performance
towards
electrochemical
nitrite
reduction
reaction
(NO
2
RR),
superior
NH
3
Faradaic
efficiency
yield
rate
98.2
%
34.6
mg
h
−1
cat
(75.5
Ir
)
at
0
−0.1
V
(vs
reversible
hydrogen
electrode),
respectively.
Ex/in
situ
characterizations
theoretical
calculations
reveal
Ir−Ni
interactions
within
improve
electron
transfer
benefit
both
activation
active
generation,
leading
a
stronger
trend
NO
RR
by
greatly
reducing
energy
barriers
rate‐determining
step.
Energy & Fuels,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
With
the
increasing
demand
for
downstream
ammonia
products,
research
on
fuel
has
received
growing
attention.
Therefore,
under
"dual
carbon"
context,
it
is
crucial
to
develop
an
energy-efficient
and
environmentally
friendly
method
synthesis.
Current
indicates
that
electrocatalytic
synthesis
one
of
most
promising
methods.
This
study
systematically
summarizes
three
major
factors
influencing
nitrogen
reduction
reaction
(eNRR)
catalysts
synthesis:
material
optimization,
structural
design,
engineering.
In
terms
materials,
precious-metal-based,
non-precious-metal-based,
metal-free
eNRR
are
classified
listed.
By
examination
properties
catalytic
effects
various
metals
non-metals
in
synthesis,
materials
with
highest
activity
can
be
further
identified.
To
enhance
efficiency,
strategies,
such
as
vacancy
creation,
doping,
interface
engineering,
facet
changes
size
morphology
active
sites,
have
been
summarized.
integration
reactions,
including
microscale
activation,
proton
transfer,
electron
efficiency
was
discussed
depth.
Finally,
urgent
issues
need
addressed
current
were
discussed,
unique
insights
future
development
provided.
review
aims
provide
innovative
ideas
design
improve
rate
selectivity
catalysts.
Advanced Healthcare Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 26, 2025
Nitric
oxide
(NO)
is
an
essential
molecule
in
biomedicine,
recognized
for
its
antibacterial
properties,
neuronal
modulation,
and
use
inhalation
therapies.
The
effectiveness
of
NO-based
treatments
relies
on
precise
control
NO
concentrations
tailored
to
specific
therapeutic
needs.
Electrochemical
generation
(E-NOgen)
via
nitrite
(NO2
-)
reduction
offers
a
scalable
efficient
route
controlled
production,
while
also
addressing
environmental
concerns
by
reducing
NO2
-
pollution
maintaining
nitrogen
cycle
balance.
Recent
developments
catalysts
E-NOgen
devices
have
propelled
conversion,
enabling
on-demand
production.
This
review
provides
overview
pathways,
with
focus
cutting-edge
Fe/Cu-based
catalysts,
explores
the
development
biomedical
use.
Challenges
future
directions
advancing
technologies
are
discussed.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 9, 2025
Abstract
The
electrochemical
conversion
of
harmful
pollutant
nitrite
(NO
2
−
)
in
wastewater
to
NH
3
is
an
effective
strategy
for
water
remediation
and
production
value‐added
chemicals.
However,
achieving
high
yield
selectivity
challenging
due
the
low
catalyst
activity
competitive
H
N
4
byproducts.
Herein,
first
time,
Cu
single‐atom
electrocatalysts
on
TiO
(Cu
1
/TiO
are
designed
reduction
a
neutral
aqueous
electrolyte.
optimal
exhibits
exceptional
rate
21.2
mg
h
−1
cat
Faradaic
efficiency
96.0%
at
−1.0
V
(vs
RHE),
representing
one
best
electrocatalytic
performance
ever
achieved.
Impressively,
NO
(0.1
mol
L
can
be
completely
conversed
8
electrolysis.
experimental
studies
theoretical
calculations
uncover
that
single
atoms
narrows
bandgap
improves
electron
transfer
,
synergistically
activate
stabilize
*NO
intermediate,
reduce
energy
barrier
rate‐determining
step
(*NH
→NH
),
thus
resulting
remarkable
.
This
study
provides
new
simultaneous
ambient
conditions
by
using
catalysis.
