Advanced Science,
Journal Year:
2022,
Volume and Issue:
9(20)
Published: April 15, 2022
High-performance
flexible
pressure
sensors
have
attracted
a
great
deal
of
attention,
owing
to
its
potential
applications
such
as
human
activity
monitoring,
man-machine
interaction,
and
robotics.
However,
most
high-performance
are
complex
costly
manufacture.
These
cannot
be
repaired
after
external
mechanical
damage
lack
tactile
feedback
applications.
Herein,
sensor
based
on
MXene/polyurethane
(PU)/interdigital
electrodes
is
fabricated
by
using
low-cost
universal
spray
method.
The
sprayed
MXene
the
spinosum
structure
PU
other
arbitrary
substrates
(represented
polyimide
membrane
filter)
act
sensitive
layer
interdigital
electrodes,
respectively.
shows
an
ultrahigh
sensitivity
(up
509.8
kPa-1
),
extremely
fast
response
speed
(67.3
ms),
recovery
(44.8
good
stability
(10
000
cycles)
due
interaction
between
electrodes.
In
addition,
hydrogen
bond
endows
device
with
self-healing
function.
can
also
integrated
circuit,
which
realize
This
MXene-based
sensor,
along
designing/fabrication,
expected
widely
used
in
detection,
electronic
skin,
intelligent
robots,
many
aspects.
Small,
Journal Year:
2021,
Volume and Issue:
17(42)
Published: Sept. 14, 2021
With
the
rapid
development
and
popularization
of
smart,
portable,
wearable
flexible
electronic
devices,
urgent
demands
have
been
raised
for
electromagnetic
interference
(EMI)
shielding
films
to
solve
related
pollution
problems.
polyvinyl
alcohol
(PVA)
as
polymer
matrix,
sandwich-structured
EMI
nanocomposite
are
prepared
via
electrospinning-laying-hot
pressing
technology,
where
Fe3
O4
/PVA
composite
electrospun
nanofibers
in
top
bottom
layers
Ti3
C2
Tx
middle
layer.
Owing
electrospinning
process
successful
construction
sandwich
structure,
when
amounts
respectively
only
13.3
26.7
wt%,
effectiveness
(EMI
SE)
reach
40
dB
with
thickness
75
µm,
higher
than
that
(Fe3
/Ti3
)/PVA
(21
dB)
based
on
blending-electrospinning-hot
under
same
fillers.
Furthermore,
possess
excellent
thermal
conductivities
mechanical
properties.
This
novel
kind
performances,
conductivities,
properties
presents
broad
application
prospects
fields
protection
high-power,
devices.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
31(22)
Published: March 8, 2021
Abstract
In
recent
decades,
flexible
and
wearable
devices
have
been
extensively
investigated
due
to
their
promising
applications
in
portable
mobile
electronics
human
motion
monitoring.
MXene,
a
novel
growing
family
of
2D
nanomaterials,
demonstrates
superiorities
such
as
outstanding
electrical
conductivity,
abundant
terminal
groups,
unique
layered‐structure,
large
surface
area,
hydrophilicity,
making
it
be
potential
candidate
material
for
devices.
Numerous
pioneering
works
are
devoted
develop
MXene‐based
composites
with
various
functions
designed
structures.
Therefore,
the
latest
progress
is
summarized
this
review,
focusing
on
preparation
strategies,
working
mechanisms,
performances,
sensors,
supercapacitors,
electromagnetic
interference
shielding
materials.
Moreover,
current
challenges
future
outlooks
also
discussed.
ACS Nano,
Journal Year:
2022,
Volume and Issue:
16(9), P. 13370 - 13429
Published: Sept. 12, 2022
Photocatalytic
water
splitting,
CO2
reduction,
and
pollutant
degradation
have
emerged
as
promising
strategies
to
remedy
the
existing
environmental
energy
crises.
However,
grafting
of
expensive
less
abundant
noble-metal
cocatalysts
on
photocatalyst
materials
is
a
mandatory
practice
achieve
enhanced
photocatalytic
performance
owing
ability
extract
electrons
efficiently
from
enable
rapid/enhanced
catalytic
reaction.
Hence,
developing
highly
efficient,
inexpensive,
noble-metal-free
composed
earth-abundant
elements
considered
noteworthy
step
toward
considering
photocatalysis
more
economical
strategy.
Recently,
MXenes
(two-dimensional
(2D)
transition-metal
carbides,
nitrides,
carbonitrides)
shown
huge
potential
alternatives
for
cocatalysts.
several
excellent
properties,
including
atomically
thin
2D
morphology,
metallic
electrical
conductivity,
hydrophilic
surface,
high
specific
surface
area.
In
addition,
they
exhibit
Gibbs
free
intermediate
H
atom
adsorption
close
zero
than
that
commercial
Pt-based
cocatalyst,
Fermi
level
position
above
H2
generation
potential,
an
capture
activate
molecules.
Therefore,
there
growing
interest
in
MXene-based
various
events.
this
review,
we
focus
recent
advances
synthesis
with
0D
morphologies,
stability
MXenes,
photocatalysts
evolution,
degradation.
The
challenges
possible
future
directions
enhance
are
also
discussed.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
34(13)
Published: Nov. 24, 2021
Abstract
As
an
emerging
star
of
2D
nanomaterials,
transition
metal
carbides
and
nitrides,
named
MXenes,
present
a
large
potential
in
various
research
areas
owing
to
their
intrinsic
multilayer
structure
intriguing
physico‐chemical
properties.
However,
the
fabrication
application
functional
MXene‐based
devices
still
remain
challenging
as
they
are
prone
oxidative
degradation
under
ambient
environment.
Within
this
review,
preparation
methods
MXenes
focusing
on
recent
investigations
thermal
structure–stability
relationships
inert,
oxidizing,
aqueous
environments
systematically
introduced.
Moreover,
key
factors
that
affect
oxidation
such
as,
atmosphere,
temperature,
composition,
microstructure,
environment,
reviewed.
Based
different
scenarios,
strategies
for
avoiding
or
delaying
proposed
encourage
utilization
complicated
environments,
especially
at
high
temperature.
Furthermore,
chemistry
MXene‐derived
oxides
is
analyzed,
which
can
offer
perspectives
further
design
novel
composites
with
unique
structures
being
preserved.
ACS Nano,
Journal Year:
2020,
Volume and Issue:
14(8), P. 10633 - 10647
Published: Aug. 10, 2020
Various
wearable
aerogel
sensors
are
emerging
for
their
light
weight,
fairly
wide
sensing
range,
and
sensitive
ability.
Aramid
nanofibers
(ANFs)
as
a
kind
of
burgeoning
building
blocks
realize
multifunctional
applications
in
diversified
fields
innate
extinguished
mechanical
property
thermal
stability.
Limited
by
high
insulating
property,
this
work
ANFs
were
designed
to
integrate
with
2D
MXene
sheet
distinct
conductive
property.
Herein,
we
report
an
MXene/ANFs
composite
through
feasible
controllable
vacuum
filtration
followed
freeze-drying
process.
Benefiting
from
the
inerratic
3D
hierarchical
"mortar-brick"
porous
structure
ultralow
density
25
mg/cm3,
aerogels
proved
possess
compressible
resilience
appealing
performance
up
1000
times.
Importantly,
verified
series
simulation
experiments,
sensor
shows
detection
range
(2.0-80.0%
compression
strain),
(128
kPa-1),
limit
(100
Pa),
which
still
play
flexible
role
detecting
human
movement
even
vigorous
sports
after
undergoing
ultrahigh
devastating
pressures
(∼623
kPa).
In
addition,
can
withstand
harsh
temperature
200
°C
excellent
flame
resistance.
The
integrated
especially
highly
stability,
presents
great
potential
behavior
monitoring
under
certain
extreme
conditions.
