Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 6, 2024
Abstract
Electrochemical
nitrate
reduction
reaction
(NO
3
RR)
is
emerging
as
a
promising
strategy
for
removal
and
ammonia
(NH
)
production
using
renewable
electricity.
Although
great
progresses
have
been
achieved,
the
crystal
phase
effect
of
electrocatalysts
on
NO
RR
remains
rarely
explored.
Here,
epitaxial
growth
unconventional
2H
Cu
hexagonal
close‐packed
(
hcp
IrNi
template,
resulting
in
formation
three
IrNiCu@Cu
nanostructures,
reported.
IrNiCu@Cu‐20
shows
superior
catalytic
performance,
with
NH
Faradaic
efficiency
(FE)
86%
at
−0.1
(vs
reversible
hydrogen
electrode
[RHE])
yield
rate
687.3
mmol
g
−1
h
,
far
better
than
common
face‐centered
cubic
Cu.
In
sharp
contrast,
IrNiCu@Cu‐30
IrNiCu@Cu‐50
covered
by
shell
display
high
selectivity
toward
nitrite
2
−
),
FE
above
60%
0.1
RHE).
Theoretical
calculations
demonstrated
that
has
optimal
electronic
structures
due
to
highest
d‐band
center
strongest
trend
lowest
energy
barriers.
The
electroactivity
originates
from
abundant
low
coordination
sites
surface,
which
guarantees
fast
electron
transfer
accelerate
intermediate
conversions.
This
work
provides
feasible
tactic
regulate
product
distribution
engineering
electrocatalysts.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(26)
Published: April 21, 2022
Controlling
the
architectures
and
crystal
phases
of
metal@semiconductor
heterostructures
is
very
important
for
modulating
their
physicochemical
properties
enhancing
application
performances.
Here,
a
facile
one-pot
wet-chemical
method
to
synthesize
three
types
amorphous
SnO2
-encapsulated
crystalline
Cu
heterostructures,
i.e.,
hemicapsule,
yolk-shell,
core-shell
nanostructures,
in
which
unconventional
(e.g.,
2H,
4H,
6H)
defects
stacking
faults
twin
boundaries)
are
observed
cores,
reported.
The
hemicapsule
Cu@SnO2
with
voids
that
not
only
expose
core
but
also
retain
interface
between
,
show
an
excellent
electrocatalytic
CO2
reduction
reaction
(CO2
RR)
selectivity
toward
production
CO
formate
high
Faradaic
efficiency
(FE)
above
90%
wide
potential
window
from
-1.05
-1.55
V
(vs
reversible
hydrogen
electrode
(RHE)),
highest
FE
RR
(95.3%)
obtained
at
-1.45
RHE).
This
work
opens
up
new
way
synthesis
heterostructured
nanomaterials
promising
catalytic
application.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(23)
Published: Jan. 9, 2023
The
collective
oscillation
of
free
electrons
at
the
nanoscale
surface
gold
nanostructures
is
closely
modulated
by
tuning
size,
shape/morphology,
phase,
composition,
hybridization,
assembly,
and
nanopatterning,
along
with
surroundings
plasmonic
located
a
dielectric
interface
air,
liquid,
solid.
This
review
first
introduces
physical
origin
intrinsic
optical
properties
further
summarizes
stimuli-responsive
changes
in
properties,
metal-field-enhanced
signals,
luminescence
spectral
shaping,
chiroptical
response,
photogenerated
hot
carriers.
current
success
landscape
nanoscience
nanotechnology
mainly
originates
from
abundant
thermodynamically
stable
face-centered
cubic
(fcc)
phase.
It
has
been
extended
crystal
phase
engineering
to
prepare
unfavorable
phases
(e.g.,
kinetically
stable)
heterophases
modulate
their
intriguing
phase-dependent
properties.
A
broad
range
promising
applications,
including
but
not
limited
full-color
displays,
solar
energy
harvesting,
photochemical
reactions,
sensing,
microscopic/biomedical
imaging,
have
fostered
parallel
research
on
multitude
effects
occurring
nanostructures.
The Chemical Record,
Journal Year:
2023,
Volume and Issue:
23(4)
Published: Feb. 20, 2023
Abstract
Ru‐based
materials
hold
great
promise
for
substituting
Pt
as
potential
electrocatalysts
toward
water
electrolysis.
Significant
progress
is
made
in
the
fabrication
of
advanced
electrocatalysts,
but
an
in‐depth
understanding
engineering
methods
and
induced
effects
still
their
early
stage.
Herein,
we
organize
a
review
that
focusing
on
strategies
substantial
improvement
electrocatalytic
OER
HER
performance
catalysts,
including
geometric
structure,
interface,
phase,
electronic
size,
multicomponent
engineering.
Subsequently,
enhancement
catalytic
by
these
are
also
elucidated.
Furthermore,
some
representative
applications
well
presented.
Finally,
challenges
prospects
elaborated
future
synthesis
more
effective
catalysts
boost
application.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 6, 2024
Abstract
Electrochemical
nitrate
reduction
reaction
(NO
3
RR)
is
emerging
as
a
promising
strategy
for
removal
and
ammonia
(NH
)
production
using
renewable
electricity.
Although
great
progresses
have
been
achieved,
the
crystal
phase
effect
of
electrocatalysts
on
NO
RR
remains
rarely
explored.
Here,
epitaxial
growth
unconventional
2H
Cu
hexagonal
close‐packed
(
hcp
IrNi
template,
resulting
in
formation
three
IrNiCu@Cu
nanostructures,
reported.
IrNiCu@Cu‐20
shows
superior
catalytic
performance,
with
NH
Faradaic
efficiency
(FE)
86%
at
−0.1
(vs
reversible
hydrogen
electrode
[RHE])
yield
rate
687.3
mmol
g
−1
h
,
far
better
than
common
face‐centered
cubic
Cu.
In
sharp
contrast,
IrNiCu@Cu‐30
IrNiCu@Cu‐50
covered
by
shell
display
high
selectivity
toward
nitrite
2
−
),
FE
above
60%
0.1
RHE).
Theoretical
calculations
demonstrated
that
has
optimal
electronic
structures
due
to
highest
d‐band
center
strongest
trend
lowest
energy
barriers.
The
electroactivity
originates
from
abundant
low
coordination
sites
surface,
which
guarantees
fast
electron
transfer
accelerate
intermediate
conversions.
This
work
provides
feasible
tactic
regulate
product
distribution
engineering
electrocatalysts.
