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.
Reactive and Functional Polymers,
Год журнала:
2024,
Номер
202, С. 106000 - 106000
Опубликована: Июнь 26, 2024
To
enhance
the
anticorrosive
performance
of
coatings
in
harsh
corrosive
environments,
a
graphene/isophorone
diisocyanate
(IPDI)
microcapsule
is
prepared
by
in-situ
polymerization.
The
self-healing
and
based
on
these
microcapsules
are
studied.
with
cross-linked
shells
this
study
solves
problems
excessive
size
insufficient
strength
traditional
microcapsules.
addition
improves
coatings.
shape
form
round
balls,
average
particle
thickness
range
17–23
μm
0.5–3.4
μm,
which
conducive
to
preparation
20.64
MPa
wrap-around
rate
reaches
68%.
have
an
initial
evaporation
temperature
231.3
°C,
graphene
organic
cross-linking
shell
enhances
thermal
stability
electrochemical
impedance
spectroscopy
(EIS)
indicates
that
|Z|f=0.01
Hz
value
coating
10
wt%
after
168
h
immersion
about
9.4
×
109
Ω
cm2,
nearly
three
orders
magnitude
higher
than
without
(6.9
106
cm2).
Monitoring
artificial
scratches
using
scanning
electron
microscope
(SEM)
for
24
reveals
repairs
cracks
well.
It
demonstrated
incorporation
graphene/IPDI
anti-corrosive
coating.
