LPG ammonia and nitrogen dioxide gas sensing properties of nanostructured polypyrrole thin film

2016 ◽  
Author(s):  
Sagar B. Bagul ◽  
Deepak S. Upadhye ◽  
Ramphal Sharma
Keyword(s):  
Thin Film ◽  
Nitrogen Dioxide ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties

Gas sensing properties of CNT-SnO2 Nanocomposite Thin Film Prepared by E-beam Evaporation

2007 ◽  
Author(s):  
A. Wisitsoraat ◽  
A. Tuantranont ◽  
E. Comini ◽  
G. Sberveglieri ◽  
W. Wlodarski
Keyword(s):  
Thin Film ◽  
Gas Sensing ◽  
Nanocomposite Thin Film ◽  
Sensing Properties ◽  
Gas Sensing Properties

scholarly journals Hydrophilicity and carbon chain length effects on the gas sensing properties of chemoresistive, self-assembled monolayer carbon nanotube sensors

2019 ◽  
Vol 10 ◽  
pp. 565-577 ◽  
Author(s):  
Juan Casanova-Cháfer ◽  
Carla Bittencourt ◽  
Eduard Llobet
Keyword(s):  
Carbon Nanotubes ◽  
Nitrogen Dioxide ◽  
Photoelectron Spectroscopy ◽  
Gas Sensing ◽  
Carbon Chain ◽  
Head Group ◽  
Carbon Chain Length ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Self Assembled

Here we describe the development of chemoresistive sensors employing oxygen-plasma-treated, Au-decorated multiwall carbon nanotubes (MWCNTs) functionalized with self-assembled monolayers (SAMs) of thiols. For the first time, the effects of the length of the carbon chain and its hydrophilicity on the gas sensing properties of SAMs formed on carbon nanotubes are studied, and additionally, the gas sensing mechanisms are discussed. Four thiols differing in the length of the carbon chain and in the hydrophobic or hydrophilic nature of the head functional group are studied. Transmission electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy are used to analyze the resulting gas-sensitive hybrid films. Among the different nanomaterials tested, short-chain thiols having a hydrophilic head group, self-assembled onto Au-decorated carbon nanotubes were most responsive to nitrogen dioxide and ethanol vapors, even in the presence of ambient humidity. In particular, this nanomaterial was about eight times more sensitive to nitrogen dioxide than bare Au-decorated carbon nanotubes when operated at room temperature. This response enhancement is attributed to the interaction, via strong hydrogen bonding, of the polar molecules tested to the polar surface of hydrophilic thiols. The approach discussed here could be extended further by combining hydrophilic and hydrophobic thiol SAMs in Au-MWCNT sensor arrays as a helpful strategy for tuning sensor response and selectivity. This would make the detection of polar and nonpolar gas species employing low-power gas sensors easier, even under fluctuating ambient moisture conditions.

Gas‐Sensing Properties of Th / SnO2 Thin‐Film Gas Sensor to Trimethylamine

1999 ◽  
Vol 146 (9) ◽  
pp. 3536-3537 ◽  
Author(s):  
P. H. Wei ◽  
G. B. Li ◽  
S. Y. Zhao ◽  
L. R. Chen
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Sno2 Thin Film ◽  
Sensing Properties ◽  
Gas Sensing Properties

CO2 gas sensing properties of DC reactive magnetron sputtered ZnO thin film

2014 ◽  
Vol 40 (8) ◽  
pp. 13115-13122 ◽  
Author(s):  
Padmanathan Karthick Kannan ◽  
Ramiah Saraswathi ◽  
John Bosco Balaguru Rayappan
Keyword(s):  
Thin Film ◽  
Gas Sensing ◽  
Zno Thin Film ◽  
Reactive Magnetron ◽  
Co2 Gas ◽  
Sensing Properties ◽  
Gas Sensing Properties

scholarly journals The Growth and Gas Sensing Properties of Mixed Oxide Nanocomposite Thin Film Derived from Anodically Oxidized Al/Ti Metal Layers

2012 ◽  
Vol 47 ◽  
pp. 833-836 ◽  
Author(s):  
R.M. Vázquez ◽  
R. Calavia ◽  
E. Llobet ◽  
F. Guirado ◽  
J. Hubálek ◽  
...  
Keyword(s):  
Thin Film ◽  
Mixed Oxide ◽  
Gas Sensing ◽  
Nanocomposite Thin Film ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Metal Layers

Hydrogen gas-sensing properties of Pt/WO3 thin film in various measurement conditions

Ionics ◽  
2012 ◽  
Vol 18 (5) ◽  
pp. 449-453 ◽  
Author(s):  
Yuki Yamaguchi ◽  
Yukari Emoto ◽  
Tohru Kineri ◽  
Masakatsu Fujimoto ◽  
Hideo Mae ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Sensing Properties ◽  
Gas Sensing Properties
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