Nano Letters,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
The
magnetic
heating
effect
under
alternating
fields
(AMFs)
has
recently
gained
attention
in
catalysis
due
to
its
potential
greatly
boost
catalytic
activities
by
providing
localized
around
nanoparticles.
However,
nanoparticles
still
suffer
from
low
efficiency
their
anisotropy
and
thermal
fluctuation,
which
is
a
key
barrier
the
wide
application
of
AMF-assisted
catalysis.
Herein,
introducing
pinning
ferromagnetic/antiferromagnetic
(FM/AFM)
coupling,
NiO/NiOOH
(AFM/FM)
core-shell
exhibit
significantly
enhanced
oxygen
evolution
reaction
activity
resistance
fluctuations
AMF,
compared
NiOOH
Notably,
magnetized
provide
an
overpotential
186
mV
at
10
mA
cm
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 29, 2024
The
heterostructure
strategy
is
currently
an
effective
method
for
enhancing
the
catalytic
activity
of
materials.
However,
challenge
that
how
to
further
improve
their
performance,
based
on
principles
material
modification
must
addressed.
Herein,
a
introduced
magnetically
regulating
enhance
hydrogen
evolution
reaction
(HER)
Co
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(46)
Published: Aug. 6, 2024
Abstract
The
rational
manipulation
of
the
surface
reconstruction
catalysts
is
a
key
factor
in
achieving
highly
efficient
water
oxidation,
but
it
challenge
due
to
complex
reaction
conditions.
Herein,
we
introduce
novel
situ
strategy
under
gradient
magnetic
field
form
catalytically
active
species
on
ferromagnetic/paramagnetic
CoFe
2
O
4
@CoBDC
core–shell
structure
for
electrochemical
oxygen
evolution
(OER).
We
demonstrate
that
Kelvin
force
from
cores’
local
modulates
shells’
reconstruction,
leading
higher
proportion
Co
2+
as
sites.
These
sites
with
optimized
electronic
configuration
exhibit
more
favorable
adsorption
energy
oxygen‐containing
intermediates
and
lower
activation
overall
catalytic
reaction.
As
result,
significant
enhancement
OER
performance
achieved
large
current
density
increment
about
128
%
at
1.63
V
an
overpotential
reduction
by
28
mV
10
mA
cm
−2
after
reconstruction.
Interestingly,
removing
external
field,
activity
could
persist
over
100
h.
This
work
showcases
directional
enhanced
oxidation.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 8, 2024
Abstract
Enhancement
of
an
alkaline
water
splitting
reaction
in
Pt‐based
single‐atom
catalysts
(SACs)
relies
on
effective
metal‐support
interactions.
A
Pt
single
atom
(Pt
SA
)‐immobilized
three‐phased
@VP‐Ni
3
P‐MoP
heterostructure
nickel
foam
is
presented,
demonstrating
high
catalytic
performance.
The
existence
triphasic
metal
phosphides
gives
outstanding
performance
toward
overall
splitting.
performs
a
low
overpotential
28
and
261
mV
for
hydrogen
evolution
(HER)
oxygen
(OER)
at
current
density
10
25
mA
cm
−2
,
respectively.
(+,−)
electrolyzer
achieves
minimum
cell
voltage
1.48
V
Additionally,
the
electrocatalyst
exhibits
substantial
Faradaic
yield
≈98.12%
H
2
98.47%
O
50
.
Consequently,
this
study
establishes
connection
understanding
active
role
atoms
substrate
configuration
It
also
facilitates
successful
synthesis
SACs,
with
loading
transition
maximal
atomic
utilization,
providing
more
sites
and,
thereby
enhancing
electrocatalytic
activity.
ChemElectroChem,
Journal Year:
2024,
Volume and Issue:
11(15)
Published: July 3, 2024
Abstract
In
response
to
the
climate
goal
of
achieving
carbon
neutrality
by
2050,
efficient
electrochemical
energy
conversion
devices
are
garnering
increasing
attention.
However,
enhancement
performance
using
noble
metal
electrocatalysts,
along
with
cost
reduction
and
electrode
fabrication,
remain
significant
challenges.
Noble
hybrid
nanostructures,
possessing
multiple
surface
functionalities,
lead
outstanding
electrocatalytic
performances
low‐cost
potential.
Strain
effects
can
bolster
bonding
strength
between
layers
substrate
or
core
layers,
while
simultaneously
affecting
through
tuning
binding
catalytically
active
sites
reactants,
including
intermediates.
This
review
encapsulates
research
efforts
directed
towards
improving
electrocatalysts
provides
an
overview
latest
advancements
in
controlling
state
metals
incorporating
a
secondary
component.
We
discuss
systematic
approaches
adjusting
strain
on
metals,
characterization
techniques,
application
case
studies,
extracting
key
design
indicators
for
readers
consider
from
macroscopic
perspective.
Further,
we
outline
challenges
encountered
current
solutions
when
advancing
catalysts
theoretical
mechanisms
practical
use.
Finally,
perspectives
future
layer
control
techniques
were
also
provided.
Applied Physics Letters,
Journal Year:
2024,
Volume and Issue:
125(11)
Published: Sept. 9, 2024
Magnetic
field
effects
have
received
widespread
attention
due
to
their
ability
enhance
the
process
of
water
splitting
at
multiple
scales.
However,
a
systematic
and
comprehensive
understanding
source
magnetic
effect
modulation
catalysts
is
lacking.
This
perspective
focuses
on
recent
advancements
in
harnessing
external
improve
electrocatalytic
suggests
future
directions.
First,
mechanism
several
are
elaborated
detail,
including
magnetohydrodynamic
effect,
magnetothermal
spin
polarization
magnetoresistance
effect.
Then,
classification
construction
strategies
summarized,
primarily
divided
into
single
metal/alloy
catalysts,
metal
oxide-based
other
catalysts.
Finally,
challenges
potential
field-enhanced
discussed,
study,
situ
characterization,
multi-field
synergy
effects.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
The
magnetic
heating
effect
under
alternating
fields
(AMFs)
has
recently
gained
attention
in
catalysis
due
to
its
potential
greatly
boost
catalytic
activities
by
providing
localized
around
nanoparticles.
However,
nanoparticles
still
suffer
from
low
efficiency
their
anisotropy
and
thermal
fluctuation,
which
is
a
key
barrier
the
wide
application
of
AMF-assisted
catalysis.
Herein,
introducing
pinning
ferromagnetic/antiferromagnetic
(FM/AFM)
coupling,
NiO/NiOOH
(AFM/FM)
core-shell
exhibit
significantly
enhanced
oxygen
evolution
reaction
activity
resistance
fluctuations
AMF,
compared
NiOOH
Notably,
magnetized
provide
an
overpotential
186
mV
at
10
mA
cm
