Small,
Journal Year:
2024,
Volume and Issue:
20(25)
Published: Jan. 14, 2024
Abstract
High‐entropy
alloys
nanoparticles
(HEAs
NPs)
have
gained
considerable
attention
due
to
their
extensive
compositional
tunability
and
intriguing
catalytic
properties.
However,
the
synthesis
of
highly
dispersed
ultrasmall
HEAs
NPs
remains
a
formidable
challenge
inherent
thermodynamic
instability.
In
this
study,
(
ca
.
2
nm)
PtCuGaFeCo
are
synthesized
using
one‐pot
solution‐based
method
at
160
°C
atmospheric
pressure.
The
exhibit
good
activity
for
oxygen
reduction
reaction
(ORR).
half‐wave
potential
relative
reversible
hydrogen
electrode
(RHE)
reaches
0.88
V,
mass
specific
approximately
six
times
four
higher
than
that
commercial
Pt/C
catalyst.
Based
on
X‐ray
photoelectron
spectroscopy
(XPS)
absorption
(XAS)
analyses,
surface
strain
optimized
coordination
environments
led
high
ORR
activities
in
acidic
media.
Moreover,
size
also
plays
an
important
role
enhancing
performance.
work
presents
facile
viable
strategy
preparing
NPs,
offering
great
energy
electrocatalysis
applications
through
entropy
engineering.
Analytical Chemistry,
Journal Year:
2024,
Volume and Issue:
96(33), P. 13663 - 13671
Published: Aug. 10, 2024
Rapid
and
accurate
detection
of
human
epidermal
growth
factor
receptor
2
(HER2)
is
crucial
for
the
early
diagnosis
prognosis
breast
cancer.
In
this
study,
we
reported
an
iron-manganese
ion
N-doped
carbon
single-atom
catalyst
(FeMn-NC
Advanced Science,
Journal Year:
2023,
Volume and Issue:
10(33)
Published: Oct. 23, 2023
Strong
substrate
affinity
and
high
catalytic
efficiency
are
persistently
pursued
to
generate
high-performance
nanozymes.
Herein,
with
unique
surface
atomic
configurations
distinct
d-orbital
coupling
features
of
different
metal
components,
a
class
highly
efficient
MnFeCoNiCu
transition
high-entropy
nanozymes
(HEzymes)
is
prepared
for
the
first
time.
Density
functional
theory
calculations
demonstrate
that
improved
between
metals
increases
electron
density
near
Fermi
energy
level
(EF
)
shifts
position
overall
d-band
center
respect
EF
,
thereby
boosting
site-to-site
transfer
while
also
enhancing
adsorption
oxygen
intermediates
during
catalysis.
As
such,
proposed
HEzymes
exhibit
superior
affinities
efficiencies
comparable
natural
horseradish
peroxidase
(HRP).
Finally,
superb
(POD)-like
activity
used
in
biosensing
antibacterial
applications.
These
results
suggest
have
great
potential
as
new-generation
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(19), P. 12049 - 12095
Published: May 2, 2024
Cancer,
as
one
of
the
leading
causes
death
worldwide,
drives
advancement
cutting-edge
technologies
for
cancer
treatment.
Transition-metal-based
nanozymes
emerge
promising
therapeutic
nanodrugs
that
provide
a
reference
therapy.
In
this
review,
we
present
recent
breakthrough
First,
comprehensively
outline
preparation
strategies
involved
in
creating
transition-metal-based
nanozymes,
including
hydrothermal
method,
solvothermal
chemical
reduction
biomimetic
mineralization
and
sol–gel
method.
Subsequently,
elucidate
catalytic
mechanisms
(catalase
(CAT)-like
activities),
peroxidase
(POD)-like
oxidase
(OXD)-like
activities)
superoxide
dismutase
(SOD)-like
along
with
their
activity
regulation
such
morphology
control,
size
manipulation,
modulation,
composition
adjustment
surface
modification
under
environmental
stimulation.
Furthermore,
elaborate
on
diverse
applications
anticancer
therapies
encompassing
radiotherapy
(RT),
chemodynamic
therapy
(CDT),
photodynamic
(PDT),
photothermal
(PTT),
sonodynamic
(SDT),
immunotherapy,
synergistic
Finally,
challenges
faced
by
are
discussed
alongside
future
research
directions.
The
purpose
review
is
to
offer
scientific
guidance
will
enhance
clinical
based
transition
metals.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(26)
Published: April 9, 2024
Metal
nanoparticle
(NP)
cocatalysts
are
widely
investigated
for
their
ability
to
enhance
the
performance
of
photocatalytic
materials;
however,
practical
application
is
often
limited
by
inherent
instability
under
light
irradiation.
This
challenge
has
catalyzed
interest
in
exploring
high-entropy
alloys
(HEAs),
which,
with
increased
entropy
and
lower
Gibbs
free
energy,
provide
superior
stability.
In
this
study,
3.5
nm-sized
noble-metal-free
NPs
composed
a
FeCoNiCuMn
HEA
successfully
synthesized.
With
theoretic
calculation
experiments,
electronic
structure
augmenting
catalytic
CO
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(24)
Published: March 4, 2024
Abstract
High‐entropy
(HE)
materials,
celebrated
for
their
extraordinary
chemical
and
physical
properties,
have
garnered
increasing
attention
broad
applications
across
diverse
disciplines.
The
expansive
compositional
range
of
these
materials
allows
nuanced
tuning
properties
innovative
structural
designs.
Recent
advances
been
centered
on
versatile
photothermal
conversion
capabilities,
effective
the
full
solar
spectrum
(300–2500
nm).
HE
effect,
coupled
with
hysteresis
diffusion,
imparts
desirable
thermal
stability.
These
attributes
position
as
a
revolutionary
alternative
to
traditional
signifying
transformative
shift
in
technology.
This
review
delivers
comprehensive
summary
current
state
knowledge
regarding
emphasizing
intricate
relationship
between
compositions,
structures,
light‐absorbing
mechanisms,
optical
properties.
Furthermore,
outlines
notable
contributions
areas,
such
water
evaporation,
personal
management,
thermoelectric
generation,
catalysis,
biomedical
applications.
culminates
presenting
roadmap
that
prospective
directions
future
research
this
burgeoning
field,
also
fruitful
ways
develop
advanced
expand
promising
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(33)
Published: July 1, 2024
Abstract
Modifying
the
coordination
or
local
environments
of
single‐,
di‐,
tri‐,
and
multi‐metal
atom
(SMA/DMA/TMA/MMA)‐based
materials
is
one
best
strategies
for
increasing
catalytic
activities,
selectivity,
long‐term
durability
these
materials.
Advanced
sheet
supported
by
metal
atom‐based
have
become
a
critical
topic
in
fields
renewable
energy
conversion
systems,
storage
devices,
sensors,
biomedicine
owing
to
maximum
utilization
efficiency,
precisely
located
centers,
specific
electron
configurations,
unique
reactivity,
precise
chemical
tunability.
Several
offer
excellent
support
are
attractive
applications
energy,
medical
research,
such
as
oxygen
reduction,
production,
hydrogen
generation,
fuel
selective
detection,
enzymatic
reactions.
The
strong
metal–metal
metal–carbon
with
metal–heteroatom
(i.e.,
N,
S,
P,
B,
O)
bonds
stabilize
optimize
electronic
structures
atoms
due
interfacial
interactions,
yielding
activities.
These
provide
models
understanding
fundamental
problems
multistep
This
review
summarizes
substrate
structure‐activity
relationship
different
active
sites
based
on
experimental
theoretical
data.
Additionally,
new
synthesis
procedures,
physicochemical
characterizations,
biomedical
discussed.
Finally,
remaining
challenges
developing
efficient
SMA/DMA/TMA/MMA‐based
presented.
