ACS Applied Nano Materials,
Journal Year:
2023,
Volume and Issue:
6(10), P. 8335 - 8345
Published: May 12, 2023
Gas
sensors
with
multiselectivity
are
drawing
increasing
attention
and
temperature-tuned
dual
selectivity
have
been
developed.
Because
Au
nanoparticles
(NPs)
can
lower
the
activation
barrier
for
sensing
reactions,
herein,
NP
decoration
was
used
to
expand
range
of
a
ZnO
nanotetrapod
(NTP)-based
sensor.
A
triselectivity
sensor
based
on
NP–ZnO
NTPs
The
exhibited
enhanced
formaldehyde
when
operation
temperature
<200
°C,
ethanol
between
200
340
acetone
>400
°C.
Additionally,
increased
magnitude
response
decreased
optimal
detection
This
work
demonstrates
that
is
an
efficient
approach
improving
performance
semiconductor-based
gas
temperature-tunable
selectivity.
Chemosensors,
Journal Year:
2022,
Volume and Issue:
11(1), P. 7 - 7
Published: Dec. 22, 2022
The
2D
structure
of
MXenes
attracts
wide
research
attention
toward
an
application
these
materials
in
gas
sensors.
These
structures
are
extremely
sensitive
to
minor
variations
their
composition,
which
employed
for
tuning
functional
properties.
Here,
we
consider
the
partially
substituted
composition
TixV2-xC,
where
x
=
0.2,
via
quantum
chemical
calculations,
and
test
chemiresistive
characteristics
as
a
receptor
component
planar-type
sensor
on-chip
multisensor
array.
We
thoroughly
discuss
synthesis
process
Ti0.2V1.8AlC
MAX-phase
corresponding
MXenes,
prepare
inks
and,
furthermore,
deposit
films
by
microextrusion
printing
over
array
planar
multi-electrode
at
surface
pen-sized
chip.
crystal
obtained
is
evaluated
X-ray
diffraction
analysis.
developed
chip
has
been
exposed
upon
few
gaseous
analytes,
alcohol
VOCs,
NH3,
H2O,
500–16,000
ppm
concentration,
room
temperature
ensure
that
could
observe
positive
effect
matured
from
resistance
enhancing,
with
up
10%
vs.
water
vapors.
calculations
carried
framework
density-functional
theory
V2C,
Ti2C,
Ti0.2V1.8C
crystals
ensured
electronic
were
almost
consistent
experiment
fundings:
most
prominent
observed
relation
H2O
Therefore,
be
considered
applying
them
temperature-operated
hygrometers.
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Dec. 21, 2023
Abstract
Organic-inorganic
molecular
assembly
has
led
to
numerous
nano/mesostructured
materials
with
fantastic
properties,
but
it
is
dependent
on
and
limited
the
direct
interaction
between
host
organic
structure-directing
molecules
guest
inorganic
species.
Here,
we
report
a
“solvent-pair
surfactants”
enabled
(SPEA)
method
achieve
general
synthesis
of
mesostructured
requiring
no
host-guest
interaction.
Taking
mesoporous
metal
oxides
as
an
example,
dimethylformamide/water
solvent
pairs
behave
surfactants
induce
formation
polyoxometalates/copolymers
nanocomposites,
which
can
be
converted
into
oxides.
This
SPEA
enables
functional
ordered
different
pore
sizes,
structures,
compositions
tailored
pore-wall
microenvironments
that
are
difficult
access
via
conventional
organic-inorganic
assembly.
Typically,
nitrogen-doped
ε
-WO
3
high
specific
surface
area,
uniform
mesopores
stable
framework
obtained
exhibits
great
application
potentials
such
gas
sensing.
ACS Applied Nano Materials,
Journal Year:
2023,
Volume and Issue:
6(10), P. 8335 - 8345
Published: May 12, 2023
Gas
sensors
with
multiselectivity
are
drawing
increasing
attention
and
temperature-tuned
dual
selectivity
have
been
developed.
Because
Au
nanoparticles
(NPs)
can
lower
the
activation
barrier
for
sensing
reactions,
herein,
NP
decoration
was
used
to
expand
range
of
a
ZnO
nanotetrapod
(NTP)-based
sensor.
A
triselectivity
sensor
based
on
NP–ZnO
NTPs
The
exhibited
enhanced
formaldehyde
when
operation
temperature
<200
°C,
ethanol
between
200
340
acetone
>400
°C.
Additionally,
increased
magnitude
response
decreased
optimal
detection
This
work
demonstrates
that
is
an
efficient
approach
improving
performance
semiconductor-based
gas
temperature-tunable
selectivity.
