tio2 nanowires array fabrication and gas sensing properties
tio2 nanowires array fabrication and gas sensing properties
... www.sciencedirect.com
Sensors and Actuators B 130 (2008) 70–76
TiO
2
nanowires array fabrication and gas sensing properties
L. Francioso
∗
, A.M. Taurino, A. Forleo, P. Siciliano
CNR-IMM Institute for Microelectronics and ... 2007
Abstract
A cheap nanofabrication process for titania (TiO
2
) polycrystalline nanowire array for gas sensing applications with lateral size...
electrical and gas - sensing properties of wo3 semiconductor material
... concentration of NO
x
gas [6]. However,
most reports focused on the NO
x
gas sensors, and the
study of sensing to other gases was rare. In this paper,
we have investigated the electrical and gas- sensing
characteristics ... 0.6±0.8
mm.
2.4. Measurement of sensing properties
The gas- sensing properties were examined in a
chamber through which air or a sample gas (petrol...
thermal treatment effects on the material and gas-sensing properties of room-temperaturetungstenoxidenanorodsensors
... distinct bands at 270, 327, 712, and 807 cm
−1
except for the lattice mode band below 200 cm
−1
and a small
instrumental artifact around 520 cm
−1
. The four bands fall very
300 Y.S. Kim / Sensors and ... M. Antonietti, M. Niederberger,
Template-free synthesis and assembly of single-crystalline tungsten oxide
nanowires and their gas- sensing properties, Angew. Chem. Int. Ed. 4...
gas sensing properties of metal - organics derived pt dispersed - tio2 thin film fired in nh3
... 4508C showed the highest gas sensitivity and selectivity to H . However,
2 2
the film fired at 6008C showed no sensitivity to reducing gases. In contrast, high gas sensitivity and selectivity to H ... Hayakawa et al.rSensors and Actuators B 67 2000 270–274 271
Fig. 1. Change of gas sensitivity with firing temperature.
This paper described the effect of NH on gas sensing
3
pro...
gas sensing properties of wo3 doped rutile tio2 thick film at high operating temperature
... three
other individual oxidizing gases, CO, O
2
and CO
2
, at 600 °C, and a
gas mixture (NO
2
+ oxidizing gases) with CO, O
2
and CO
2
concen-
trations of 1000 ppm, 15% and 10%, respectively. The detection ... of the fabricated sensor were studied, while its gas
sensing properties were investigated by detecting NO
2
and other
oxidizing gases (CO, O
2
and CO
2
) at high ope...
gas - sensing properties of tin oxide doped with metal oxides and carbon
... and out
of the gas molecules.
To study the effect of MWCNTs doping on the sensing proper-
ties to ethanol gas and LPG, we plotted the response of undoped
SnO
2
sensor to 250 ppm ethanol gas and ... press as: N. Van Hieu, et al., Gas- sensing properties of tin oxide doped with metal oxides and carbon nanotubes:
A competitive sensor for ethanol and liquid petroleum gas,...
gas sensing properties of nanocrystalline tungsten oxide synthesized by acid
... Pages 5
Sensors and Actuators B xxx (2010) xxx–xxx
Contents lists available at ScienceDirect
Sensors and Actuators B: Chemical
journal homepage: www.elsevier.com/locate/snb
Gas sensing properties ... calcinations are in the range of 30–150 nm.
The gas sensing properties of these powders in the form of thick film were investigated with and without
platinum doping. Gas respon...
gas sensing properties of nanoparticle indium - doped wo3 thick films
... (1.5, 3.0 and 5.0wt.%). The gas sensing properties of the sensors
to nitrogen dioxide, carbon monoxide, ammonia and ethanol were investigated. It was observed that the pure nanoparticle WO
3
sensing
layers ... August 2005
Abstract
The gas sensing properties of pure and indium-doped nanoparticle WO
3
thick films were studied. Sensors were prepared using commercial
WO
3
nanop...
glucose - mediated hydrothermal synthesis and gas sensing characteristics of wo3 hollow microspheres
... materials, and gas sensors [1–3].In
particular, when the shells of hollow spheres are thin and nano-
porous, the gas can diffuse toward the entire sensing surface, which
enhances the gas sensing ... surface area and large pore volume.
3.4. Gas sensing characteristics
As stated above, the gas responses of the R5 and R0.5 powders
were negligible. Thus, the gas response...
large - scale synthesis and gas sensing application of vertically
... species and make them excellent candidates
for gas sensing applications [34,35]. The gas sensing performance
X. Shen et al. / Sensors and Actuators B 143 (2009) 325–332 329
Fig. 4. TEM and HRTEM ... nanorod arrays and commercial WO
3
powders.
(b) Sensing responses vs. gas concentrations of various gases, including 1-butanol,
acetone, toluene, 2-propanol, acetic acid, ethan...