E3S Web of Conferences,
Journal Year:
2024,
Volume and Issue:
588, P. 02004 - 02004
Published: Jan. 1, 2024
This
study
investigates
the
gas-sensing
capabilities
of
heterostructure
sensors
based
on
hydrogen-terminated
nanocrystalline
diamond
(H-NCD),
molybdenum
disulfide
(MoS₂),
and
functionalized
graphene
oxide
(SH-GO,
GO)
for
detecting
ethanol,
ammonia
(NH₃),
nitrogen
dioxide
(NO₂)
gases
at
100
ppm
concentrations.
Sensors
were
tested
two
distinct
temperatures:
125°C
room
temperature
(22°C).
Among
sensors,
SH-GO/H-NCD
exhibited
highest
sensitivity
to
with
a
response
634%
22°C
554%
125°C.
The
Au
NPs/H-NCD
sensor
showed
second-best
ethanol
587%
For
NH₃,
demonstrated
best
value
76%,
while
temperature,
it
41%.
NO₂
sensing
negative
responses,
exhibiting
least
degradation
-47%
-19%
22°C.
results
highlight
those
combining
materials
into
heterostructures
significantly
enhances
gas
detection
performance,
even
showing
comparable
responses
commercial
sensors.
