... 800
◦
C)
response for to 4000 ppm NH
3
gas.
Please cite this article in press as: T.D. Senguttuvan, et al., Gas sensing properties of nanocrystalline tungsten oxide synthesized by acid precipi-
tation method, ... ammonia gas sensing prop-
erties of nanocrystalline tungsten oxide with and withoutplatinum
doping under different processing conditions.
2. Experim...
... image of an MWCNTs-doped SnO
2
sol (c); FE-SEM image of
an MWCNTs-doped SnO
2
(d).
Please cite this article in press as: N. Van Hieu, et al., Gas- sensing properties of tin oxide doped with metal oxides ... 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 petroleu...
... 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 ... stability is of
signi®cance to apply the sensors to certain control and
monitoring.
3.3. Gas- sensing properties
In this study, we ®rst examined the e...
... 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
properties of Pt dispersed-TiO derived from precursor.
2
2. ... is
explained by the effect of encapsulation or decoration of
the metal by the reduced support or electronic interaction
of the reduced support with the metal. SM...
... size of active layers is one of the key factors to
enhance the gas sensing properties of semiconductor metal
oxide sensors [7,8]. Additionally, the inclusion of differ-
ent doping metals in the sensing ... gap of the In-
loaded WO
3
. These energetic levels are the source of added
support of charge that changes the sensing properties of the
WO
3
-based sensors.
4...
... discussion
Fig. 1 shows SEM images of the sensing films deposited by
screen printing. The sensing film exhibited the typical microstruc-
ture of screen printed sensing films. A porous sensing film surface
was ... evident, the inner
morphological properties of the sensing film were affected by the
WO
3
doping. Fig. 3 revealed that the sensing films consisted of al-
most a s...
... 2009
Available online xxx
Keywords:
Nitrogen dioxide
Ammonia
Gas- sensing properties
PbS
Sensor
abstract
In the present paper, the gas- sensing characteristics of novel gas sensors based on PbS were investigated.
The ... harmful gases. Nitrogen dioxide is created by the high temper-
ature combustion of coal, chemical production, natural gas or oil
in power plants and also b...
... preparation of soluble and highly crystalline tungsten
oxide nanorods of varying sizes by a mild, solution-based colloidal
approach.
A stirred slurry of 0.70 g of W(CO)
6
(Strem, 99%), 1.33 g of
Me
3
NO‚2H
2
O ... been
accomplished by heating a tungsten foil, covered by SiO
2
plate, in
an argon atmosphere at 1600 °C
17
or recently by electrochemically
etching a tungst...
... semiconductor gas sensor based on
nonstoichiometric tungsten oxide nanorod film, Appl. Phys. Lett. 86 (2005)
213105.
[12] Y. S. Kim, K. Lee, Material and gas- sensing properties of tungsten oxide nanorod
thin-films, ... material and gas- sensing properties of
room-temperature tungsten oxide nanorod sensors
Yong Shin Kim
∗
Department of Applied Chemistry, Hanyang Un...
... hydrothermal system. To the
best of our knowledge, this is the first report of the selective
synthesis of ␣-Fe
2
O
3
superstructures and nanocubes. The gas-
sensing properties of the ␣-Fe
2
O
3
superstructures, ... reducing gas to the n-type
semiconductors [35]. So, logarithm of the response should be lin-
ear with logarithm of gas concentration. Fig. 7b–f displays chart...