Critical Reviews in Analytical Chemistry,
Год журнала:
2024,
Номер
unknown, С. 1 - 34
Опубликована: Март 20, 2024
Optimizing
materials
and
associated
structures
for
detecting
various
environmental
gas
pollutant
concentrations
has
been
a
major
challenge
in
sensing
technology.
Semiconducting
metal
oxides
(SMOs)
fabricated
at
the
nanoscale
are
class
of
sensor
technology
which
metallic
species
functionalized
with
dopants
to
modify
their
chemiresistivity
crystalline
scaffolding
properties.
Studies
focused
on
recent
advances
sensors
utilizing
oxide
nanostructures
special
emphasis
structure-surface
property
relationships
some
typical
n-type
p-type
SMOs
efficient
detection
presented.
Strategies
enhance
performances
also
discussed.
These
material
have
several
advantages
such
as
ease
handling,
portability,
doped-based
SMO
ability
pollutants
low
temperatures.
displayed
excellent
sensitivity,
selectivity,
robustness.
In
addition,
hybrid
showed
exceptional
selectivity
CWAs
when
irradiated
visible
light
while
displaying
high
reversibility
humidity
independence.
Results
that
TiO2
surfaces
can
sense
50
ppm
SO2
presence
UV
under
operating
temperatures
298–473
K.
Hybrid
response.
For
example,
CuO–ZnO
nanoparticle
network
4:1
vol.%
CuO/ZnO
ratio
exhibited
responses
three
times
greater
than
pure
CuO
six
ZnO
toward
H2S.
This
review
provides
critical
discussion
modified
capabilities
nanoparticles
ambient
conditions,
focusing
reported
results
during
past
two
decades
sensing.
Engineering Reports,
Год журнала:
2022,
Номер
5(6)
Опубликована: Дек. 8, 2022
Abstract
The
usage
of
the
gas
sensor
has
been
increasing
very
rapidly
in
industry
and
daily
life
for
various
potential
applications.
In
recent
years,
metal
oxide
semiconductors
(MOS)
become
primary
choice
designing
highly
sensitive,
stable,
low‐cost
real‐life
applications‐based
sensors
due
to
their
inherent
physical
chemical
properties.
Researchers
have
proposed
numerous
sensing
mechanisms
explain
functionality
MOS‐based
sensors.
this
review,
we
comprehensively
covered
different
used
MOS.
We
also
discussed
parameters
affecting
sensitivity
selectivity
Moreover,
techniques
enhance
response
are
extensively
covered.
And
finally,
give
our
prospective
on
opportunities
challenges
future
applications
ACS Sensors,
Год журнала:
2024,
Номер
9(4), С. 1644 - 1655
Опубликована: Март 19, 2024
Chemiresistive
gas
sensors
based
on
metal
oxides
have
been
widely
applied
in
industrial
monitoring,
medical
diagnosis,
environmental
pollutant
detection,
and
food
safety.
To
further
enhance
the
sensing
performance,
researchers
worked
to
modify
structure
function
of
material
so
that
it
can
adapt
different
types
conditions.
Among
numerous
gas-sensitive
materials,
n-type
TiO2
semiconductors
are
a
focus
attention
for
their
high
stability,
excellent
biosafety,
controllable
carrier
concentration,
low
manufacturing
cost.
This
Perspective
first
introduces
mechanism
nanostructures
composite
TiO2-based
nanomaterials
then
analyzes
relationship
between
properties
composition,
focusing
also
technical
issues
such
as
doping,
heterojunctions,
functional
applications.
The
applications
challenges
nanostructured
safety,
other
fields
summarized
detail.
Finally,
context
practical
application
challenges,
future
development
technologies
new
concepts
explored,
providing
ideas
directions
multifunctional
intelligent
various
fields.
Molecules,
Год журнала:
2024,
Номер
29(2), С. 327 - 327
Опубликована: Янв. 9, 2024
Formaldehyde,
a
ubiquitous
indoor
air
pollutant,
plays
significant
role
in
various
biological
processes,
posing
both
environmental
and
health
challenges.
This
comprehensive
review
delves
into
the
latest
advancements
electrochemical
methods
for
detecting
formaldehyde,
compound
of
growing
concern
due
to
its
widespread
use
potential
hazards.
underscores
inherent
advantages
techniques,
such
as
high
sensitivity,
selectivity,
capability
real-time
analysis,
making
them
highly
effective
formaldehyde
monitoring.
We
explore
fundamental
principles,
mechanisms,
diverse
methodologies
employed
detection,
highlighting
innovative
sensing
materials
electrodes.
Special
attention
is
given
recent
developments
nanotechnology
sensor
design,
which
significantly
enhance
sensitivity
selectivity
these
detection
systems.
Moreover,
this
identifies
current
challenges
discusses
future
research
directions.
Our
aim
encourage
ongoing
innovation
field,
ultimately
leading
development
advanced,
practical
solutions
contexts.
