Unraveling the Synergy of Interfacial Engineering in In Situ Prepared NiO/NdNiO3 for ppb‐Level SO2 Sensing: Mechanistic and First‐Principles Insights
Small,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 23, 2025
Abstract
Interfacial
engineering
of
semiconductor
metal
oxides
offers
a
plethora
features
to
overcome
the
limitations
chemiresistive
gas
sensors,
thereby
increasing
their
practical
viability.
Herein,
SO
2
sensing
characteristics
NiO
are
modulated
through
incorporation
NdNiO
3
,
via
facile
in
situ
synthesis
NiO/NdNiO
nanostructures
that
significantly
enhance
sensor
performance.
To
this
end,
systematic
control
Nd/Ni
molar
ratio
is
employed
during
enabling
regulation
structural
properties
and
interfacial
interactions.
The
optimized
‐based
demonstrates
superior
detection
at
140
°C,
outperforming
pristine
NiO,
owing
tunable
charge
carrier
dynamics
heterointerface
adsorption.
showcases
an
extensive
dynamic
response
range
from
450
ppb
200
ppm
impressive
limit
(320
ppb),
along
with
remarkable
selectivity
excellent
stability.
First‐principles
calculations
reveal
play
distinct
roles
adsorption,
functioning
as
receptor,
selectively
interacting
dissociated
oxygen,
serving
transducer,
facilitating
signal
conversion
by
inhibiting
oxygen
dissociation.
Additionally,
designed
portable,
threshold‐triggered
prototype,
integrating
developed
enhanced
detection,
presents
promising
avenue
for
applications
industrial
environmental
monitoring.
Язык: Английский
Self-Powered Triboelectric Ethanol Sensor Based on CuO-Doped Electrospun PVDF Fiber with Enhanced Sensing Performance
Polymers,
Год журнала:
2025,
Номер
17(10), С. 1400 - 1400
Опубликована: Май 20, 2025
Electrospinning
techniques
have
been
widely
applied
in
diverse
applications,
such
as
biocompatible
membranes,
energy
storage
systems,
and
triboelectric
nanogenerators
(TENGs),
with
the
capability
to
incorporate
other
functional
materials
achieve
specific
purposes.
Recently,
gas
sensors
incorporating
doped
semiconducting
fabricated
by
electrospinning
extensively
investigated.
TENGs,
functioning
self-powered
sources,
utilized
drive
without
external
power
supplies.
Herein,
a
ethanol
sensor
(TEES)
is
integrating
TENG
an
into
single
device.
The
proposed
TEES
exhibits
significantly
improved
response
time
lower
detection
limit
compared
published
integrated
sensors.
device
achieves
open-circuit
voltage
of
51.24
V
at
800
rpm
maximum
short-circuit
current
7.94
μA
rpm.
Owing
non-contact
freestanding
operating
mode,
shows
no
significant
degradation
after
240,000
operational
cycles.
Compared
previous
studies
that
TENGs
sensors,
demonstrated
marked
improvement
sensing
performance,
faster
(6
s
1000
ppm)
(10
ppm).
Furthermore,
enabled
modulating
gate
terminal
IRF840
metal-oxide
semiconductor
field-effect
transistor
(MOSFET),
which
controls
illumination
light-emitting
diode
(LED).
LED
extinguished
when
electrical
output
decreases
below
setting
value,
allowing
for
discrimination
intoxicated
states.
These
results
suggest
provides
promising
platform
self-powered,
high-performance
sensing.
Язык: Английский