ACS Sensors,
Год журнала:
2024,
Номер
9(12), С. 6430 - 6440
Опубликована: Ноя. 11, 2024
Ensuring
water-fouling-free
operation
of
semiconductor-based
gas
sensors
is
essential
to
maintaining
their
accuracy,
reliability,
and
stability
across
diverse
applications.
Despite
the
use
hydrophobic
strategies
prevent
external
water
intrusion,
addressing
in
situ-produced
transport
during
H2
detection
remains
a
challenge.
Herein,
we
construct
novel
waterproof
sensor
by
integrating
single-atom
Ru(III)
self-assembly
with
monolayer
amphiphiles
embedded
MoS2.
The
unique
structure
enables
detect
presence
water,
as
well
facilitate
self-transport
situ-generated
from
H2-O2
reaction
detection.
Molecular
dynamics
simulations
reveal
that
exhibit
higher
diffusion
coefficient
than
multilayer
amphiphiles,
making
them
more
advantageous
for
removing
water.
Deployable
on
mobile
platforms,
it
wireless
H2cat
up
6
months,
without
introduction
protective
membranes
against
dust
ingress.
This
work
not
only
enhances
performance
but
also
introduces
new
concept
advancement
stable
water-sensitive
sensors.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 12, 2025
Abstract
Two‐dimensional
(2D)
materials
have
emerged
as
promising
candidates
for
gas
sensing
applications
due
to
their
exceptional
electrical,
structural,
and
chemical
properties,
which
enable
high
sensitivity
rapid
response
molecules.
However,
despite
potential,
2D
material‐based
sensors
face
a
significant
challenge
in
achieving
adequate
selectivity,
many
respond
similarly
multiple
gases,
leading
cross‐sensitivity
inaccurate
detection.
This
review
provides
comprehensive
overview
of
the
recent
advancements
improving
selectivity
sensors.
It
explores
material
modification
strategies,
such
functionalizing
components
tuning
adsorption
dynamics,
enhance
selective
interactions.
Engineering
approaches,
including
field‐effect
modulation
sensor
array
design,
are
also
discussed
effective
methods
fine‐tune
performance.
Additionally,
integration
machine
learning
(ML)
algorithms
is
highlighted
potential
differentiate
among
analytes.
Prospects
further
through
optimization,
calibration,
drift
compensation
explored,
along
with
incorporation
smart
systems
into
Internet
Things
(IoT).
outlines
key
objectives
strategies
that
pave
way
next‐generation
enhanced
reliability,
versatility,
poised
impact
wide
range
from
environmental
monitoring
industrial
safety.
A
composite
of
sulfur
nanosheets
(S-NSs)
with
hydrophobic
carbon
nanotubes
(H-CNTs)
was
designed,
and
a
chemiresistive
gas
sensor
based
on
this
material
constructed
for
breath
analysis
NH3
detection
at
room
temperature.
Taking
advantage
the
capillary
condensation
CNTs,
effect
hexadecyltrimethoxysilane
(HDTMS),
high
sensitivity
S-NSs
to
detection,
showed
an
improved
humidity-resistant
capacity
is
capable
detecting
breath-relevant
concentrations
down
ppb
level
under
humidity.
The
fabricated
exhibited
fast
response/recovery
(18/26
s)
good
stability.
Online
monitoring
exhaled
shows
recovery
stable
baseline,
providing
potential
practical
application.
research
also
facilitates
development
commercial
low-cost
sensors.
Small Structures,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 26, 2025
In
this
study,
a
flexible
room‐temperature
ammonia
(NH
3
)
sensor
is
developed
based
on
MoO
/CuO/Cu
2
O
hybrid
nanoclusters
(HNCs),
specifically
designed
for
the
noninvasive
diagnosis
of
nephropathy.
The
HNCs
achieve
an
ultralow
detection
limit
0.73
ppm,
with
high
sensitivity
(0.163
ppm
−1
and
rapid
response
recovery
times
(16.4
90.6
s).
integration
(n‐type)
CuO
Cu
(p‐type)
forms
multi‐heterojunctions,
enhancing
gas‐sensing
performance
through
efficient
charge
separation
improved
NH
adsorption.
Additionally,
demonstrates
excellent
mechanical
flexibility
long‐term
stability
under
dynamic
deformation.
To
address
humidity
interference
in
exhaled
breath
analysis,
hydrophobic
polytetrafluoroethylene
layer
coated
via
radio
frequency
sputtering,
ensuring
effective
differentiation
between
healthy
individuals
kidney
disease
patients.
work,
potential
multi‐heterojunction
nanostructures
developing
high‐performance,
gas
sensors
practical
health‐monitoring
applications
highlighted.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(38), С. 26132 - 26146
Опубликована: Янв. 1, 2024
The
designed
H-MOF/MXene-based
sensor
had
high
selectivity
for
NH
3
at
RT,
provided
humidity-independent
detection,
and
response
with
reliable
characteristics.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 15, 2025
This
work
reports
a
new
method
toward
creating
two-dimensional
(2D)
conductive
metal-organic
frameworks
(MOFs)
for
enhanced
gas
sensing
applications.
By
employing
Ti3C2Tx
MXene
as
metal
precursor
and
2-aminoterapthalic
acid
an
organic
linker,
MXene-derived
MOFs
with
high
surface
reactivity
were
synthesized.
The
sensor,
initially
selective
NH3
gas,
was
tailored
to
detect
NO2
by
integrating
it
MOFs,
which
offer
abundant
active
sites
on
the
surface.
resulting
MOF
sensor
exhibited
notable
response
of
76.52%,
rapid
recovery
times
31.5
80.2
s,
respectively,
at
room
temperature
35%
relative
humidity
(RH).
sensor's
specificity
acidic
attributed
acid-base
interaction
facilitated
inducing
detectable
changes
in
resistance.
Additionally,
fabricated
demonstrated
excellent
repeatability
stability
under
ambient
conditions.
Remarkably,
low
detection
limit
(LOD)
5
ppb
gas.
These
findings
underscore
potential
utilizing
2D
sheets
derived
from
precursors
practical
applications,
highlighting
their
versatility
effectiveness.
