Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
Abstract
Ambient
electrocatalytic
reduction
of
NO
2
−
to
NH
3
(NO
RR)
provides
a
reliable
route
for
migrating
pollutants
and
simultaneously
generating
valuable
3.
However,
the
RR
involves
multistep
electron
transfer
complex
intermediates,
rendering
achievement
high
selectivity
major
challenge.
In
this
contribution,
heterostructured
Cu
O/NiO
nanoflowers
are
explored
incorporating
advantages
dual
active
sites
as
highly
selective
catalyst.
Combined
theoretical
calculations
in
situ
FTIR/EPR
spectroscopy
analysis,
it
is
revealed
synergistic
effect
O
NiO
promote
energetics
heterostructure
electrocatalyst
through
tandem
catalysis
pathway,
where
activates
initial
absorption
deoxygenation
boosting
*
formation,
while
generated
on
then
transferred
substrate
with
abundant
hydrogen
conversion.
Moreover,
formation
enhances
H
retention
capacity,
promoting
consumed
inhibiting
inter‐
species
binding.
As
result,
equipped
flow
cell
displays
superior
yield
rate
128.2
mg
h
−1
cm
−2
Faradaic
efficiency
97.1%
at
current
density
−1.25
A
.
Further,
designed
system
proven
be
adaptable
other
electrochemical
production
reactions
including
reduction.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 10, 2025
Abstract
The
integration
of
glucose
oxidation
reaction
(GOR)
and
nitrate
reduction
(NO
3
−
RR)
in
an
electrolyzer
affords
a
sustainable
approach
to
produce
high
value‐added
products
remove
pollutants.
Herein,
3D
hierarchical
architecture
consisting
defect‐rich
copper–cobalt
nanosheets
immobilized
by
cobalt
phosphide‐modified
nickel
foam
(D‐CuCo/CoP/NF)
is
rationally
designed
as
bifunctional
electrocatalyst
for
GOR
NO
RR.
resulting
self‐standing
electrode
displayed
remarkable
activity.
Only
1.29
V
vs.
RHE
required
yield
current
density
100
mA
cm
−2
.
Glucose
efficiently
converted
into
formate
with
selectivity
value
93.4%
Faraday
efficiency
(FE)
90.3%.
as‐prepared
D‐CuCo/CoP/NF
also
capable
transforming
nitrates
valuable
ammonia,
leading
FE
96.9%
rate
802.9
µmol
h
−1
Such
performance
renders
it
the
best
electrocatalysts
Mechanistic
studies
revealed
that
defects
catalyst
greatly
facilitated
adsorption
both
Cu(OH)
2
Co
3+
‐O/Co
4+
‐O
species
served
active
sites
reaction.
A
GOR||NO
RR
hybrid
flow
cell
constructed
using
electrode,
at
voltage
1.35
V.
Materials Horizons,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
A
paired
electrolysis
system
was
constructed
to
synchronously
valorize
nitrate
wastewater
and
upgrade
polyethylene
terephthalate,
utilizing
oxygen-vacancy-rich
Co
3
O
4
as
the
cathode
Cu-doped
Ni(OH)
2
anode,
respectively.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(6), P. 1271 - 1271
Published: March 12, 2025
The
electrocatalytic
reduction
of
nitrate
to
ammonia
(NH3)
under
mild
environmental
conditions
is
attracting
increasing
attention,
in
which
efficient
and
inexpensive
transition
metal
catalysts,
with
the
advantages
abundancy
low
cost,
play
a
key
role.
However,
synergistic
activity
selectivity
promotion
are
still
highly
challenging.
Herein,
we
developed
hydrogel-assisted
strategy
prepare
FeNi
nanoparticles
via
situ
adsorption
Fe/Ni
precursors
on
polypyrrole
hydrogel.
After
optimization,
maximum
NH3
yield
reached
0.166
mmol
h−1
cm−2,
Faradaic
efficiency
88.9%
86.6%.
This
excellent
electrochemical
performance
was
attributed
mesoporous
hydrophilic
structure
hydrogel,
facilitates
homogeneous
loading
provides
channel
for
both
charge
mass
transfer
during
reduction,
important
conversion
NO3−
NH3.
Electrochemical
active
surface
area
determination
impedance
spectroscopy
showed
that
introduction
hydrogel
increased
sites
improved
transfer.
study
an
effective
improving
electrocatalysts
by
utilizing
three-dimensional
network
electrical
conductivity.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 18, 2025
Abstract
Ambient
electrocatalytic
reduction
of
NO
2
−
to
NH
3
(NO
RR)
provides
a
reliable
route
for
migrating
pollutants
and
simultaneously
generating
valuable
3.
However,
the
RR
involves
multistep
electron
transfer
complex
intermediates,
rendering
achievement
high
selectivity
major
challenge.
In
this
contribution,
heterostructured
Cu
O/NiO
nanoflowers
are
explored
incorporating
advantages
dual
active
sites
as
highly
selective
catalyst.
Combined
theoretical
calculations
in
situ
FTIR/EPR
spectroscopy
analysis,
it
is
revealed
synergistic
effect
O
NiO
promote
energetics
heterostructure
electrocatalyst
through
tandem
catalysis
pathway,
where
activates
initial
absorption
deoxygenation
boosting
*
formation,
while
generated
on
then
transferred
substrate
with
abundant
hydrogen
conversion.
Moreover,
formation
enhances
H
retention
capacity,
promoting
consumed
inhibiting
inter‐
species
binding.
As
result,
equipped
flow
cell
displays
superior
yield
rate
128.2
mg
h
−1
cm
−2
Faradaic
efficiency
97.1%
at
current
density
−1.25
A
.
Further,
designed
system
proven
be
adaptable
other
electrochemical
production
reactions
including
reduction.
