Abstract
Layered
double
hydroxides
(LDHs)
with
unique
layered
structure
and
atomic
composition
are
limited
in
the
field
of
electromagnetic
wave
absorption
(EMA)
due
to
their
poor
electrical
conductivity
lack
dielectric
properties.
In
this
study,
EMA
performance
anticorrosion
hollow
derived
LDH
composites
improved
by
temperature
control
design
using
ZIF‐8
as
a
sacrifice
template.
Diverse
regulation
modes
result
different
mechanisms
for
EMA.
process,
chemical
reactions
tune
products
construct
refined
optimize
LDHs
loss.
Additionally,
phase
interfaces
generated
components
impedance
matching
enhance
interfacial
polarization.
The
results
show
that
prepared
NCZ
(Ni3ZnC0.7/Co3ZnC@C)
has
minimum
reflection
loss
(RL
min
)
‐58.92
dB
thickness
2.4
mm
maximum
effective
bandwidth
(EAB
max
7.36
GHz
mm.
Finally,
its
special
composition,
sample
exhibits
excellent
This
work
offers
essential
knowledge
designing
engineering
materials
from
metal
organic
framework
(MOF)
cutting‐edge
nanostructures.
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Май 28, 2023
Although
multifunctional
aerogels
are
expected
to
be
used
in
applications
such
as
portable
electronic
devices,
it
is
still
a
great
challenge
confer
multifunctionality
while
maintaining
their
inherent
microstructure.
Herein,
simple
method
proposed
prepare
NiCo/C
with
excellent
electromagnetic
wave
absorption
properties,
superhydrophobicity,
and
self-cleaning
by
water-induced
NiCo-MOF
self-assembly.
Specifically,
the
impedance
matching
of
three-dimensional
(3D)
structure
interfacial
polarization
provided
CoNi/C
well
defect-induced
dipole
primary
contributors
broadband
absorption.
As
result,
prepared
have
width
6.22
GHz
at
1.9
mm.
Due
presence
hydrophobic
functional
groups,
improve
stability
humid
environments
obtain
hydrophobicity
large
contact
angles
>
140°.
This
aerogel
has
promising
absorption,
resistance
water
or
environments.
Nano-Micro Letters,
Год журнала:
2023,
Номер
15(1)
Опубликована: Авг. 25, 2023
The
development
of
wearable
multifunctional
electromagnetic
protective
fabrics
with
multifunctional,
low
cost,
and
high
efficiency
remains
a
challenge.
Here,
inspired
by
the
unique
flower
branch
shape
"Thunberg's
meadowsweet"
in
nature,
nanofibrous
composite
membrane
hierarchical
structure
was
constructed.
Integrating
sophisticated
0D@2D@1D
structures
multiple
heterointerfaces
can
fully
unleash
application
potential
membrane.
targeted
induction
method
used
to
precisely
regulate
formation
site
morphology
metal-organic
framework
precursor,
intelligently
integrate
heterostructures
enhance
dielectric
polarization,
which
improves
impedance
matching
loss
mechanisms
wave
absorbing
materials.
Due
synergistic
enhancement
electrospinning-derived
carbon
nanofiber
"stems",
MOF-derived
nanosheet
"petals"
transition
metal
selenide
nano-particle
"stamens",
CoxSey/NiSe@CNSs@CNFs
(CNCC)
obtains
minimum
reflection
value
(RLmin)
-68.40
dB
at
2.6
mm
maximum
effective
absorption
bandwidth
(EAB)
8.88
GHz
thin
thickness
2.0
filling
amount
only
5
wt%.
In
addition,
multi-component
heterostructure
endow
fibrous
excellent
flexibility,
water
resistance,
thermal
management,
other
properties.
This
work
provides
perspectives
for
precise
design
rational
fabrics.
