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.
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.
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.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(22), С. 26175 - 26186
Опубликована: Ноя. 13, 2024
The
safe
use
of
methanol-reforming
hydrogen
fuel
cells
requires
the
accurate
identification
and
detection
gases
involved
in
methanol
hydrogen.
To
address
this
issue,
we
construct
unique
gas
sensors
by
uniformly
growing
zeolitic
imidazolate
framework
(ZIF)
(ZIF-67
ZIF-8)
particles
on
surface
functionalized
V2CTx
(F-V2CTx),
which
are
prealkalized
then
grafted
with
(3-aminopropyl)
triethoxysilane
(APTES).
In
achieved
composite
F-V2CTx/ZIFs,
provides
a
fast
electron
transport
channel,
ZIFs
provide
adsorption
sites
for
specific
gases.
Thus,
different
ZIF
modifications,
V2CTx/ZIF-based
modulated
to
realize
selective
or
This
reveals
that
F-V2CTx/ZIF-8
F-V2CTx/ZIF-67
exhibit
response/recovery
(5/4
s
500
ppm
H2)
(3/12
10
methanol),
respectively.
sensor
exhibits
capability
detecting
sub
methanol,
theoretical
limit
72
ppb,
while
shows
good
selectivity
at
room
temperature.
mechanisms
gas-sensing
enhancement
gas-selectivity
modulation
V2CTx/ZIF
clarified
based
heterojunction
effect
first-principles
calculations,
work
expands
application
nanocomposites
composed
field
proposes
an
effective
strategy
modifications.
