Radial Dielectric Gradient Core–Shell Ce/NiCo@C Composites for Simultaneous Electromagnetic Wave Absorption and Antibacterial Activity via Ce3+/Ce4+ Valence Modulation
Weiran Yan,
Jiaxun Hu,
Cong Yi
и другие.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 4, 2025
Abstract
The
increasing
demand
for
multifunctional
materials
that
combine
electromagnetic
wave
(EMW)
absorption
and
antibacterial
properties
has
driven
the
development
of
novel
capable
meeting
these
challenges.
Here,
a
core–shell
Ce/NiCo@C
composite
with
radial
dielectric
gradient
structure
is
presented,
designed
to
enhance
EMW
exhibit
potent
activity.
material's
unique
architecture,
which
includes
multilayered
configuration
distribution
Ce
3+
/Ce
4+
valence
states,
modulates
constant
promotes
electron
migration
polarization
under
exposure.
This
design
results
in
broad
effective
bandwidth
7.12
GHz,
minimum
reflection
loss
(RL
min
)
−67.2
dB
at
thickness
1.94
mm.
Additionally,
reversible
transition
between
generates
reactive
oxygen
species
(ROS),
disrupt
microbial
cell
membranes
inhibit
bacterial
growth.
demonstrates
sterilization
rate
exceeding
99%
against
E.
coli
significant
bactericidal
effect
S.
aureus
.
work
highlights
potential
integrating
valence‐modulated,
advanced
antimicrobial
applications,
offering
promising
approach
future
diverse
technological
fields.
Язык: Английский
Co-Ni doped lignin-derived carbon-based materials with “mosaic” structure for efficient microwave absorption
Materials Letters,
Год журнала:
2025,
Номер
unknown, С. 138215 - 138215
Опубликована: Фев. 1, 2025
Язык: Английский
Rational design of microwave absorbing cryogels using microcrystalline cellulose and cellulose-derived nutshell/metal nanoparticles
Industrial Crops and Products,
Год журнала:
2025,
Номер
229, С. 120954 - 120954
Опубликована: Апрель 5, 2025
Язык: Английский
Carbon Foam with In Situ Fe-Catalyzed Dense CNT@Graphite Core–Shell Fiber on Skeletons for High-Performance Radar-Infrared Stealth
ACS Applied Nano Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 10, 2025
Язык: Английский
MOF-Derived Hollow Fe/FeN/C Heterogeneous Composites for Broad-Band and Efficient Microwave Absorption
Langmuir,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 16, 2025
The
construction
of
hollow
structures
and
the
incorporation
metal
nanoparticles
have
been
shown
to
be
two
potential
approaches
achieving
high-performance
microwave
absorption.
In
this
study,
a
polyhedron
material
featuring
an
FeN/Fe-doped
carbon
matrix
was
synthesized
by
acidification
corrosion
pyrolysis
strategy.
formation
heterojunctions,
coupled
with
design
structures,
significantly
improved
dielectric
loss
capacity
material.
Furthermore,
magnetic
not
only
increased
but
also
enriched
mechanisms
material,
leading
overall
improvement
in
loss.
Under
synergistic
effects
these
factors,
exhibited
exceptional
absorption
properties.
particular,
at
thickness
2.3
mm,
minimum
reflection
value
FeN/Fe@HC
nanocomposite
reached
-64.5
dB
effective
bandwidth
5.1
GHz.
These
results
further
highlight
importance
structure
atom
doping
improving
performance.
Язык: Английский