Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(43), P. 20697 - 20704
Published: Oct. 19, 2024
High-entropy
alloy
(HEA)
electrocatalysts
have
exhibited
remarkable
catalytic
performance
because
of
their
synergistic
interactions
among
multiple
metals.
However,
the
growth
mechanism
HEAs
remains
elusive,
primarily
due
to
constraints
imposed
by
current
synthesis
methodologies
for
HEAs.
In
this
work,
an
innovative
electrodeposition
method
was
developed
fabricate
Pt-based
nanocomposites
(Pt
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 10, 2024
Abstract
High
entropy
alloys
(HEAs)
are
promising
heterocatalysts
because
of
their
unique
physicochemical
properties,
but
research
on
HEA‐catalyzed
tandem
reactions
is
lacking.
Moreover,
limited
HEAs
for
molecular
transformation
has
hindered
development.
Herein,
an
unsupported
nanoporous
HEA
Al‐Pt‐Pd‐Ru
(HEANPore)
prepared
using
a
top‐down
dealloying
method
reported.
The
Lewis
acidity
and
electron
redistribution
the
noble
metals
Pt,
Pd,
Ru
identified
to
be
intrinsic
high
activity
selectivity
HEANPore
in
one‐pot
reductive
amination
nitroarenes.
competitive
adsorption
reactant
corresponding
reaction
mechanism
investigated
DFT.
This
study
demonstrates
exceptional
performance
reactions,
presenting
new
possibilities
application
field
catalysis.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 28, 2024
Abstract
Dielectric
oxides
with
robust
relaxation
responses
are
fundamental
for
electronic
devices
utilized
in
energy
absorption,
conversion,
and
storage.
However,
the
structural
origins
governing
dielectric
response
remain
elusive
due
to
involvement
of
atomically
complex
compositional
environments.
Herein,
configurational
entropy
is
introduced
as
a
regulatory
factor
precisely
control
heterogeneity
representative
perovskite
oxides.
Through
advanced
electric
field
visualization
studies,
novel
quantitative
relationship
established
between
atomic‐level
disorder‐induced
polarization
macroscopic
properties.
The
results
indicate
that
degree
atomic
delocalization
exhibits
near‐parabolic
trend
increasing
entropy,
reaching
maximum
medium‐entropy
perovskite.
Correspondingly,
vectors
display
significant
asymmetrical
distribution,
thus
greatly
enhancing
angstrom‐scale
polarization.
Then,
it
experimentally
proven
entropy‐driven
can
improve
behavior
characterized
by
broader
frequency
stronger
intensity
electromagnetic
improvements
approximately
160%
413%
compared
structurally
homogeneous
control.
This
study
unveils
correlation
oxides,
offering
perspective
exploring
structure–property
materials.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(43), P. 20697 - 20704
Published: Oct. 19, 2024
High-entropy
alloy
(HEA)
electrocatalysts
have
exhibited
remarkable
catalytic
performance
because
of
their
synergistic
interactions
among
multiple
metals.
However,
the
growth
mechanism
HEAs
remains
elusive,
primarily
due
to
constraints
imposed
by
current
synthesis
methodologies
for
HEAs.
In
this
work,
an
innovative
electrodeposition
method
was
developed
fabricate
Pt-based
nanocomposites
(Pt
