Gas
detection
has
become
a
popular
research
topic
in
the
field
of
environmental
protection
and
disease
because
concerning
increase
pollution
human
health
problems.
2D
MXenes
are
promising
candidates
for
room-temperature
gas
sensors
their
flexible
adjustable
material
compositions,
high
conductivities,
signal-to-noise
ratios,
surface
terminations.
This
paper
presents
prospects
sensors,
structure
MXenes,
potential
sensing
mechanisms
MXenes-based
sensors.
Applications
Ti3C2Tx,
V2CTx,
Nb2CTx,
Mo2CTx
different
gases
reviewed,
challenges
directions
applying
discussed.
review
provides
ideas
designing
novel
sensitive
materials
by
analyzing
value
sensor
field.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(33), С. 12683 - 12694
Опубликована: Авг. 6, 2024
Herein,
hollow
mesoporous
carbon
sphere
(HMCS)/Mxene/rGO
aerogels
were
fabricated
by
simple
hydrothermal
reduction
self-assembly
and
freeze-drying
treatment.
Owing
to
the
unique
architecture,
HMCS
nanoparticles
can
offer
additional
incident
channels
absorption
cavities,
enhancing
electromagnetic
wave
(EMW)
loss
capacity.
Moreover,
fabrication
of
3D
porous
structures
synergy
multiple
losses
extremely
reduce
impedance
mismatching,
resulting
in
more
EMWs
into
matrix
for
consumption.
In
addition,
abundant
heterointerfaces
between
rGO,
Mxene,
HMCSs
lead
formation
polarization
losses,
which
further
improve
interference
shielding
efficiency
(EMI
SE).
Therefore,
benefiting
from
hierarchical
cooperative
mechanism,
heterointerfaces,
resultant
EMI
SE
rGO-Mxene-HMCS
aerogel
reaches
80
dB
at
8.2–12.4
GHz,
is
2.5
times
that
pure
rGO
aerogel.
More
interestingly,
owing
their
hydrophobicity
promising
structure,
composites
efficiently
select
adsorb
various
oils
organic
solvents
oil/water
mixtures
realize
separation.
Remarkably,
exhibits
an
impressive
capacity
up
100–160
its
weight,
it
also
shows
admirable
recyclability.
Thus,
great
potential
application
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(36), С. 47973 - 47987
Опубликована: Сен. 3, 2024
Owing
to
the
correlation
between
acetone
in
human′s
exhaled
breath
(EB)
and
blood
glucose,
development
of
EB
gas-sensing
devices
is
important
for
early
diagnosis
diabetes
diseases.
In
this
article,
a
noninvasive
glucose
detection
device
through
sensing
EB,
based
on
an
α-Fe2O3-multiwalled
carbon
nanotube
(MWCNT)
nanocomposite,
was
successfully
developed.
Different
amounts
α-Fe2O3
were
added
MWCNTs
by
simple
solution
method.
The
optimized
gas
sensor
showed
response
5.15
10
ppm
at
200
°C.
Also,
fabricated
very
good
properties
even
atmosphere
with
high
relative
humidity.
Since
has
humidity,
proposed
promising
exactly
detect
amount
powered
3200
mAh
battery
possibility
charging
using
mains
electricity.
To
increase
reliability
calibration
device,
practical
test
taken
from
50
volunteers,
deep
learning
algorithm
(DLA)
used
effect
various
factors
each
person's
EB.
±15
errors
had
almost
85%
correct
responses.
excellent
response,
short
time,
selectivity,
repeatability,
leading
it
be
suitable
candidate
sensing.
Molecules,
Год журнала:
2025,
Номер
30(2), С. 219 - 219
Опубликована: Янв. 7, 2025
Based
on
density
functional
theory
calculations,
this
study
analyzed
the
gas-sensing
performance
of
Ti3C2Tx
(T=O,
F,
OH)
monolayers
modified
with
precious
metal
atoms
(Ag
and
Au)
for
HCHO
C6H6
gas
molecules.
Firstly,
stable
structures
Ag-
Au-single-atom
doped
surfaces
were
constructed
then
molecules
set
to
approach
at
different
initial
positions.
The
most
adsorption
structure
was
selected
further
analysis
energy,
distance,
charge
transfer,
deformation
density,
total
states,
partial
states.
results
show
that
Ag
Au
modifications
improved
Ti3C2O2
C6H6.
In
comparison,
effect
modification
better
than
Ag.
For
Ti3C2F2,
doping
did
not
significantly
change
effects
However,
decreased
Ti3C2(OH)2
HCHO,
while
there
no
significant
in
above
serve
as
a
theoretical
foundation
design
new
sensors
Recently,
increasing
research
attention
has
been
directed
toward
detecting
the
distribution
of
hazardous
gases
in
respiratory
system
for
potential
diagnosis
and
treatment
lung
injury.
Among
various
technologies,
magnetic
fiber
robots
exhibit
great
minimally
invasive
surgery
situ
disease
diagnosis.
However,
integrating
fibers
with
functionalized
sensitive
materials
remains
challenging
while
preserving
miniaturized
fibers'
mechanical
properties.
Herein,
we
report
Ti3C2Tx/TPU/NdFeB
prepared
by
facile
wet
spinning,
spray
coating,
magnetization,
obtaining
decent
strength
(4.34
MPa)
low
hysteresis
maintaining
robustness
magnetoelectric
Such
robotics
could
be
magnetically
actuated
complex
movement,
surface-coated
MXene
endowed
them
specific
response
5.2%
to
40
ppm
triethylamine
gas.
Fiber
realized
driven
omnidirectional
steering
navigation
propulsion
tubular
environments
combination
nitinol
guide
wires.
Consequently,
based
on
chemiresistive
gas
response,
proposed
locate
position
highest
level
inside
a
bronchial
model
provide
information
its
distribution.
This
provides
proof-of-concept
demonstration
inhaled
detection
robotic
multifunctional
robotics.
