Carbon
nanoparticles
(CNPs)
derived
from
metal-organic
frameworks
(ZIF-8)
are
synthesized,
which
further
self-assembled
into
mono-
or
bilayer
superstructures
for
electromagnetic
(EM)
wave
absorption.
Furthermore,
the
effect
of
ZIF-8
morphology
(cubic
rhombic
dodecahedral)
on
superstructure
and
EM
absorption
performance
CNPs
is
investigated.
The
as-prepared
cubic
exhibits
a
higher
BET
surface
area
526.1
m
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
Unique
structural
design
and
precise
compositional
adjustment
are
universally
accepted
as
effective
methods
for
the
enhancement
of
microwave
absorption
capacity.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 10, 2025
Abstract
The
flexible
manipulation
of
the
position
and
type
metal
cations
in
spinel
ferrites
gives
possibility
tuning
its
dielectric
magnetic
properties,
thus
opening
up
broad
design
space
for
broadband
low‐frequency
absorption.
However,
there
are
still
challenges
how
to
ensure
that
diverse
designs
can
be
effectively
introduced
into
ferrite
lattice
form
homogeneous
entropy‐stable
compounds,
further
engender
stable
compounds
with
special
multi‐interface
hollow
micro‐nano
structures
achieve
lightweight
efficient
performance.
In
this
paper,
opened‐hollow
multi‐shell
high‐entropy
(FeCoNiZnMg)Fe
2
O
4
@C
microspheres
a
controllable
carbon‐coated
triple‐shell
composition
constructed.
designed
structure
enhances
interactions
between
shells
regulates
domain
effective
fields.
an
incredibly
high
absorption
strengths
(−60.5
dB)
wide
(9.3
GHz).
Meanwhile,
entropy
effect
adjusts
anisotropic
field
size,
significantly
improving
4–8
GH
band,
far
exceeding
performance
ferrite@C
materials
without
forming
phase.
This
unique
composite
based
on
strategy
offers
exciting
prospects
rational
accurate
construction
polarization
design.
