Molecules,
Journal Year:
2024,
Volume and Issue:
29(18), P. 4412 - 4412
Published: Sept. 17, 2024
Food
safety
significantly
impacts
public
health
and
social
welfare.
Recently,
issues
such
as
heavy
metal
ions,
drug
residues,
food
additives,
microbial
contamination
in
have
become
increasingly
prominent.
Electrochemical
sensing
technology,
known
for
its
low
cost,
simplicity,
rapid
response,
high
sensitivity,
excellent
selectivity,
has
been
crucial
detection.
Electrospun
nanofibers,
with
their
specific
surface
area,
superior
mechanical
properties,
design
flexibility,
offer
new
insights
technical
platforms
developing
electrochemical
sensors.
This
study
introduces
the
fundamental
principles,
classifications,
detection
mechanisms
of
sensors,
along
principles
classifications
electrospinning
technology.
The
applications
electrospun
nanofiber-based
sensors
over
past
five
years
are
detailed,
limitations
future
research
prospects
discussed.
Continuous
innovation
optimization
expected
to
make
a
key
technology
detection,
providing
valuable
references
expanding
application
advancing
methods.
Chemosensors,
Journal Year:
2024,
Volume and Issue:
12(12), P. 244 - 244
Published: Nov. 22, 2024
The
efficient
detection
of
volatile
organic
compounds
(VOCs)
is
critically
important
in
the
domains
environmental
protection,
healthcare,
and
industrial
safety.
development
metal
oxide
semiconductor
(MOS)
heterojunction
gas-sensing
materials
considered
one
most
effective
strategies
to
enhance
sensor
performance.
This
review
summarizes
discusses
types
heterojunctions
their
working
principles,
enhancement
strategies,
preparation
methodologies,
applications
acetone
ethanol
detection.
To
address
constraints
pertaining
low
sensitivity,
sluggish
response/recovery
times,
elevated
operating
temperatures
that
are
inherent
VOC
sensors,
several
improvement
methods
proposed,
including
doping
with
metals
like
Ag
Pd,
incorporating
additives
such
as
MXene
polyoxometalates,
optimizing
morphologies
through
a
fine
design,
self-doping
via
oxygen
vacancies.
Furthermore,
this
work
provides
insights
into
challenges
faced
by
MOSs
heterojunction-based
gas
sensors
outlines
future
research
directions
field.
will
contribute
foundational
theories
overcome
existing
bottlenecks
MOS
technology
while
promoting
its
large-scale
application
disease
screening
or
agricultural
food
quality
assessments.
ACS Sensors,
Journal Year:
2024,
Volume and Issue:
9(12), P. 6390 - 6399
Published: Dec. 1, 2024
Metal
oxide
semiconductor
gas
sensors
have
demonstrated
exceptional
potential
in
detection
due
to
their
high
sensitivity,
rapid
response
time,
and
impressive
selectivity
for
identifying
various
sorts
of
gases.
However,
selectively
distinguishing
CH4
from
those
CO
H2
remains
a
significant
challenge.
This
difficulty
primarily
stems
the
weakly
reducing
nature
CH4,
which
results
low
adsorption
makes
it
prone
interference
stronger
gases
surroundings.
Herein,
we
synthesized
In2O3-xCuO
nanocomposites
using
hydrothermal
method
explore
sensing
properties
toward
CO,
H2.
Characterization
tests
confirmed
successful
preparation
with
different
In:Cu
molar
ratios
formation
p-n
heterojunction.
The
test
indicated
that
In2O3-2.1CuO
calcined
at
500
°C
measured
350
displayed
p-type
an
n-type
H2,
allowing
accurate
differentiation
Moreover,
sensor
also
showed
excellent
stability
reproducibility
across
all
three
First-principles
calculations
revealed
distinct
changes
electronic
structure
In2O3-CuO
heterojunction
upon
finding
aligns
empirical
evidence.
mechanism
was
effectively
explained
by
variations
energy
band
gap,
driven
electrical
behavior
during
process.
work
suggests
promising
approach
developing
selective
capable
detecting
Polymers,
Journal Year:
2023,
Volume and Issue:
15(23), P. 4554 - 4554
Published: Nov. 28, 2023
Hydrogen
sulfide,
a
colorless,
flammable
gas
with
distinct
rotten
egg
odor,
poses
severe
health
risks
in
industrial
settings.
Sensing
hydrogen
sulfide
is
crucial
for
safeguarding
worker
safety
and
preventing
potential
accidents.
This
study
investigated
the
gas-sensing
performance
of
an
electroactive
polymer
(i.e.,
polyaniline,
PANI)
its
composites
active
carbon
(AC)
PANI-AC1
PANI-AC3)
toward
H2S
at
room
temperature.
PANI-AC
composites-coated
IDE
sensors
were
fabricated
their
capability
detecting
concentrations
ranging
from
1
ppm
to
30
was
tested.
The
superior
can
be
attributed
increased
surface
area
materials,
which
provided
sites
doping
processes
enhanced
sensing
composites.
Specifically,
incorporation
AC
PANI
matrix
resulted
substantial
improvement
process,
led
stronger
responses
higher
repeatability
stability
compared
neat
PANI-coated
sensor.
Furthermore,
as-prepared
sensor
exhibited
best
response
60%
RH.
use
agricultural-waste
coconut
husk
synthesis
these
high-performance
materials
promotes
sustainable
eco-friendly
practices
while
improving
detection
monitoring
ACS Sensors,
Journal Year:
2024,
Volume and Issue:
9(8), P. 3979 - 3985
Published: Aug. 2, 2024
Metal
oxide
gas
sensors
(MOGS),
crucial
components
in
monitoring
air
quality
and
detecting
hazardous
gases,
are
well
known
for
their
poisoning
effects
when
exposed
to
certain
molecules,
such
as
hydrogen
sulfide.
Surprisingly,
our
research
reveals
that
high-temperature
H2S
treatment
leads
an
enhancement
effect
rather
than
response
decay.
This
study
investigates
the
time-decaying
enhancement,
being
attributed
formation
of
metal
sulfide
sulfate
on
oxide's
surface,
enhancing
electronic
sensitization.
Such
is
demonstrated
various
including
CO,
CH3CH2OH,
CH4,
HCHO,
NH3.
Additionally,
impacts
recovery
time
also
observed.
Surface
compositional
analysis
conducted
with
X-ray
photoelectron
spectroscopy.
A
proposed
mechanism
elaborated,
highlighting
role
sensitization
sulfide–sulfate
component.
offers
valuable
insights
into
potential
applications
sulfide-presented
harsh
environments
sensing,
encouraging
future
exploration
optimized
sensor
materials,
operation
temperature,
development
poisoning-resistant
higher
sensitivity
MOGS.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(18), P. 4412 - 4412
Published: Sept. 17, 2024
Food
safety
significantly
impacts
public
health
and
social
welfare.
Recently,
issues
such
as
heavy
metal
ions,
drug
residues,
food
additives,
microbial
contamination
in
have
become
increasingly
prominent.
Electrochemical
sensing
technology,
known
for
its
low
cost,
simplicity,
rapid
response,
high
sensitivity,
excellent
selectivity,
has
been
crucial
detection.
Electrospun
nanofibers,
with
their
specific
surface
area,
superior
mechanical
properties,
design
flexibility,
offer
new
insights
technical
platforms
developing
electrochemical
sensors.
This
study
introduces
the
fundamental
principles,
classifications,
detection
mechanisms
of
sensors,
along
principles
classifications
electrospinning
technology.
The
applications
electrospun
nanofiber-based
sensors
over
past
five
years
are
detailed,
limitations
future
research
prospects
discussed.
Continuous
innovation
optimization
expected
to
make
a
key
technology
detection,
providing
valuable
references
expanding
application
advancing
methods.
