Flexible Gas Sensor Based on PANI/WO3/CuO for Room-Temperature Detection of H2S
Sensors,
Год журнала:
2025,
Номер
25(9), С. 2640 - 2640
Опубликована: Апрель 22, 2025
Polyaniline
(PANI)
is
currently
one
of
the
most
extensively
studied
conductive
polymers
in
field
flexible
gas
sensors.
However,
sensors
based
on
pure
PANI
generally
suffer
from
problems
such
as
low
sensitivity
and
poor
stability.
To
address
these
issues,
this
work,
a
room-temperature
hydrogen
sulfide
sensor
polyaniline/tungsten
oxide/copper
oxide
(PANI/WO3/CuO)
was
synthesized
using
situ
polymerization
technology.
This
displays
response
value
31.3%
to
1
ppm
at
room
temperature,
with
response/recovery
time
353/4958
s
detection
limit
100
ppb.
Such
an
excellent
performance
attributed
high
surface
area
large
adsorption
capacity
ternary
composite,
well
multi-phase
interface
synergistic
effect.
Язык: Английский
Electrospun (La,Ba)FeO3 Nanofibers as Materials for Highly Sensitive VOC Gas Sensors
Sensors,
Год журнала:
2025,
Номер
25(9), С. 2790 - 2790
Опубликована: Апрель 28, 2025
In
this
work,
we
report
the
synthesis
of
perovskite-type
Ba-doped
LaFeO3
(La1-xBaxFeO3,
x
=
0.00,
0.02,
0.04,
and
0.06)
nanofibers
(NFs)
using
electrospinning
method.
The
synthesized
La1-xBaxFeO3
materials
have
a
fibrous
structure
with
an
average
fiber
diameter
250
nm.
fibers,
in
turn,
consist
smaller
crystalline
particles
20-50
nm
size.
sensor
properties
were
studied
when
detecting
20
ppm
CO,
CH4,
methanol,
acetone
dry
air
temperature
range
50-350
°C.
Doping
barium
leads
to
significant
increase
response
decrease
operating
volatile
organic
compounds
(VOCs).
process
oxidation
on
surface
most
sensitive
La0.98Ba0.02FeO3
material
was
situ
diffuse
reflectance
infrared
Fourier
transform
spectroscopy
(DRIFTS)
temperature-programmed
desorption
combination
mass
spectrometry
(TPD-MS).
A
mechanism
for
signal
formation
is
proposed.
Язык: Английский
Molecular Nanoarchitectonic Sensing Layer for Analysis of Volatile Fatty Acids in Bioreactor Headspaces Using a Nanomechanical Sensor
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 28, 2025
Abstract
Anaerobic
digestors
(ADs)
have
the
potential
to
become
a
major
green
energy
source
in
future
sustainable
society.
To
achieve
this,
effective
operational
parameters
of
reactors
must
be
established
and
maintained
preferably
by
automation.
In
situ
monitoring
control
AD
systems
is
currently
challenging
matter
based
on
inconsistent
feedstuff
composition
complexity
biological
processes
involved,
so
that
reactor
shutdowns
associated
with
costly
downtime
are
common
problem.
Here,
sensing
device
developed
for
volatile
fatty
acids
(VFAs),
key
intermediates
during
bioreactor
operation,
headspaces
anaerobic
reactors.
The
compact,
contains
element
self‐assembled
molecular
layer
conjunction
nanomechanical
sensor,
can
used
monitor
VFA
contents
bioreactors
estimating
their
relative
headspace
real
time.
This
allows
close
concentrations
admixture
toward
cost‐effective
operation
reducing
or
eliminating
downtime.
It
represents
simple
solution
problem
real‐time
monitoring,
making
digesters
realistic
alternative
source.
Язык: Английский