Journal of Advanced Ceramics,
Journal Year:
2023,
Volume and Issue:
12(10), P. 1889 - 1901
Published: Aug. 3, 2023
Two-dimensional
MXenes
are
generally
prepared
by
the
etching
of
acid
solutions.
The
as-synthesized
terminated
group
anions
(F–,
Cl–,
et
al.),
which
affect
electrochemical
performance
MXenes.
Here,
we
report
a
novel
method
to
prepare
Mo2C
MXene
from
Mo2Ga2C
hydrothermal
alkali
Highly
pure
was
successfully
synthesized
NaOH,
while
etchings
LiOH
and
KOH
were
failed.
concentration
temperature
time
strongly
purity
as-prepared
MXene.
Pure
could
be
20
M
NaOH
at
180
°C
for
24
h.
After
intercalation
hexadecyl
trimethyl
ammonium
bromide
90
96
h,
few-layer
obtained.
made
after
exhibited
excellent
as
anode
lithium-ion
battery,
compared
with
general
HF
reported
in
literature.
final
discharge
specific
capacity
266.73
mAh·g-1
0.8
A·g-1,
is
52%
higher
than
that
(175.77
mAh·g-1).
This
because
has
lager
surface
area,
lower
resistance,
O/OH
termination
without
anion
termination.
first
make
samples
this
significantly
better
etching.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(21)
Published: Jan. 20, 2022
Abstract
Energy
harvesting
modules
play
an
increasingly
important
role
in
the
development
of
autonomous
self‐powered
microelectronic
devices.
MXenes
(i.e.,
2D
transition
metal
carbide/nitride)
have
recently
emerged
as
promising
candidates
for
energy
applications
due
to
their
excellent
electronic
conductivity,
large
specific
surface
area,
and
tunable
properties.
Herein,
a
perspective
on
using
harvest
from
various
sources
environment
is
presented.
First,
characteristics
that
facilitate
capturing
are
systematically
introduced
preparation
strategies
derived
nanostructures
tailored
toward
such
summarized.
Subsequently,
mechanism
different
(e.g.,
solar
energy,
thermoelectric
triboelectric
piezoelectric
salinity‐gradient
electrokinetic
ultrasound
humidity
energy)
discussed.
Then,
recent
progress
MXene‐based
harvesting,
well
applications,
introduced.
Finally,
opinions
existing
challenges
future
directions
nanostructure
Nano-Micro Letters,
Journal Year:
2022,
Volume and Issue:
14(1)
Published: Feb. 9, 2022
Abstract
Lightweight,
ultra-flexible,
and
robust
crosslinked
transition
metal
carbide
(Ti
3
C
2
MXene)
coated
polyimide
(PI)
(C-MXene@PI)
porous
composites
are
manufactured
via
a
scalable
dip-coating
followed
by
chemical
crosslinking
approach.
In
addition
to
the
hydrophobicity,
anti-oxidation
extreme-temperature
stability,
efficient
utilization
of
intrinsic
conductivity
MXene,
interfacial
polarization
between
MXene
PI,
micrometer-sized
pores
composite
foams
achieved.
Consequently,
show
satisfactory
X-band
electromagnetic
interference
(EMI)
shielding
effectiveness
22.5
62.5
dB
at
density
28.7
48.7
mg
cm
−3
,
leading
an
excellent
surface-specific
SE
21,317
g
−1
.
Moreover,
exhibit
electrothermal
performance
as
flexible
heaters
in
terms
prominent,
rapid
reproducible,
stable
effect
low
voltages
superior
heat
more
uniform
distribution
compared
with
commercial
composed
alloy
plates.
Furthermore,
well
attached
on
human
body
check
their
electromechanical
sensing
performance,
demonstrating
sensitive
reliable
detection
motions
wearable
sensors.
The
EMI
multifunctionalities,
along
facile
easy-to-scalable
manufacturing
techniques,
imply
promising
perspectives
C-MXene@PI
next-generation
electronics,
aerospace,
smart
devices.
Journal of Advanced Ceramics,
Journal Year:
2022,
Volume and Issue:
11(9), P. 1431 - 1444
Published: Aug. 4, 2022
Abstract
Nowadays,
photocatalytic
technologies
are
regarded
as
promising
strategies
to
solve
energy
problems,
and
various
photocatalysts
have
been
synthesized
explored.
In
this
paper,
a
novel
CdS/MoO
2
@Mo
C-MXene
photocatalyst
for
H
production
was
constructed
by
two-step
hydrothermal
method,
where
MoO
acted
binary
co-catalyst.
the
first
step,
crystals
with
an
egged
shape
grew
on
surface
of
two-dimensional
(2D)
Mo
C
MXene
via
oxidation
process
in
HCl
aqueous
solution.
second
CdS
nanorods
were
uniformly
assembled
ethylenediamine
inorganic
cadmium
source
organic
sulfur
source.
The
composite
5
wt%
exhibits
ultrahigh
visible-light
activity
22,672
µmol/(g·h),
which
is
∼21%
higher
than
that
CdS/Mo
C-MXene.
composite,
metallic
nature
separates
MXene,
acts
electron-transport
bridge
between
accelerate
photoinduced
electron
transferring.
Moreover,
band
structure
changed
suppress
recombination
photogenerated
carriers.
This
compound
delivers
upgraded
evolution
performance
new
pathway
preparing
low-cost
problems
future.
Materials Reports Energy,
Journal Year:
2022,
Volume and Issue:
2(1), P. 100080 - 100080
Published: Feb. 1, 2022
Two-dimensional
(2D)
materials
have
received
tremendous
attention
because
they
possess
a
set
of
merits
not
available
in
bulk
materials,
such
as
large
specific
surface
area,
low
energy
barrier
for
electron
transportation
and
short
ion
diffusion
path.
These
advantages
are
desirable
especially
the
electrodes
electrochemical
storage
devices.
MXenes,
first
synthesized
2011
by
etching
their
MAX
phase
precursors,
plural
reasons
to
represent
new
family
2D
materials.
Their
rich
diversity
structure
composition
together
with
uncommon
combination
good
electrical
conductivity
hydrophilicity
makes
themselves
outstand
whole
world.
Based
on
these
advantages,
MXenes
hold
great
promise
various
technologically
important
applications,
particularly
developing
techniques
advanced
smart
systems,
portable
flexible
electronics.
There
been
remarkable
research
achievements
synthesis
application
MXene-based
While
routes
being
continuously
reported,
novel
also
routinely
discovered,
which
will
undoubtedly
help
understand
fundamental
properties
expand
scope
MXenes.
As
storage-related
cope
intrinsic
weakness
many
endeavors
made
doping,
structure-tuning
compositing
hybrid
ingredients.
In
this
review,
current
status
up-to-date
progress
applications
supercapacitors,
metal-ion
batteries
lithium
sulfur
summarized
discussed,
typical
work
aforementioned
three
categories
is
respectively
tabulated
reference
comparison.
Journal of Materials Chemistry A,
Journal Year:
2022,
Volume and Issue:
10(15), P. 8283 - 8292
Published: Jan. 1, 2022
The
MoO
3
/TiO
2
/Ti
C
T
x
composite
was
synthesized
by
a
simple
one-step
hydrothermal
method.
Due
to
the
formation
of
more
active
centers
and
heterojunctions,
sensor
has
excellent
performance
for
VOCs
unique
response
isopropanol.
Surface Science and Technology,
Journal Year:
2023,
Volume and Issue:
1(1)
Published: Sept. 27, 2023
Abstract
Aero-engine
is
a
key
part
of
aircraft,
the
operating
temperature
which
being
pushed
to
unprecedented
levels
for
higher
engine
efficiency
and
performance.
To
accomplish
gas-inlet
aero-engines,
applying
thermal
barrier
coatings
(TBCs)
on
hot-section
metallic
components,
or
even
replacing
some
components
in
aero-engines
with
ceramic-matrix
composites
(CMCs)
environmental-barrier
(EBCs)
them,
are
effective
methods
have
been
widely
accepted.
On
other
hand,
increasing
causes
aircraft
more
easily
be
detected,
thus
stealth
necessary
engines.
Except
hottest
parts
may
not
need
TBCs
EBCs
due
relatively
low
temperature,
but
they
still
protection
from
oxidation
corrosion.
Hence,
corrosion-resistant
essential.
In
this
paper,
latest
progress
above
high-temperature
protective
coatings,
i.e.,
TBCs,
EBCs,
reviewed,
mainly
including
their
materials,
fabrication
technologies
addition,
harsh
environment,
these
face
many
threats
such
as
calcia-magnesia-aluminosilicates
(CMAS)
attack,
causing
premature
failure
also
concerned
paper.
The
work
would
provide
comprehensive
understanding
guidance
developing
advanced
next-generation
aero-engines.
