Room temperature NO<inf>2</inf> gas sensor based on RGO-SnO<inf>2</inf> nanocomposite thin film

A Rayleigh surface acoustic wave (RSAW) resonator with Cu2+-PANI-SnO2 nanocomposite thin film is investigated as a gas sensor for detecting the presence of nitric oxide (NO) in air. The sensor developed in this work was sensitive to NO gas at room temperature. It is shown that the sensor had a frequency shift of 0.45 ppm when it was exposed to 12 ppb NO. This RSAW sensor also exhibited repeatability to the presence of NO gas. Especially, the presented sensor showed highly selectivity with NO gas to separate from NO2 and CO2 gases.

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Preparation of PANI doped TiO2 nanocomposite thin film and its relevance as room temperature liquefied petroleum gas sensor

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-017-7309-4 ◽

2017 ◽

Vol 28 (19) ◽

pp. 14471-14475 ◽

Cited By ~ 5

Author(s):

Rakesh K. Sonker ◽

B. C. Yadav ◽

S. R. Sabhajeet

Keyword(s):

Thin Film ◽

Gas Sensor ◽

Room Temperature ◽

Nanocomposite Thin Film ◽

Liquefied Petroleum Gas ◽

Doped Tio2

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Ternary CuO:SnO2:ZnO (1:1:1) composite thin film for room temperature gas sensor application

Optik ◽

10.1016/j.ijleo.2021.166615 ◽

2021 ◽

Vol 234 ◽

pp. 166615

Author(s):

S.R. Cynthia ◽

R. Sivakumar ◽

C. Sanjeeviraja

Keyword(s):

Thin Film ◽

Gas Sensor ◽

Room Temperature ◽

Composite Thin Film ◽

Sensor Application

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Indium tin oxide (ITO) thin film gas sensor for detection of methanol at room temperature

Sensors and Actuators B Chemical ◽

10.1016/s0925-4005(03)00524-0 ◽

2003 ◽

Vol 96 (1-2) ◽

pp. 180-189 ◽

Cited By ~ 197

Author(s):

N.G. Patel ◽

P.D. Patel ◽

V.S. Vaishnav

Keyword(s):

Thin Film ◽

Gas Sensor ◽

Tin Oxide ◽

Indium Tin Oxide ◽

Room Temperature

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Preparation and Characterization of SnO2/WO3/MWCNT Nanocomposite Thin Film for NO2 Gas Sensor

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.129-131.99 ◽

2010 ◽

Vol 129-131 ◽

pp. 99-103

Author(s):

Wei Lin ◽

Shi Zhen Huang ◽

Wen Zhe Chen

Keyword(s):

Thin Film ◽

Gas Sensor ◽

Photoelectron Spectroscopy ◽

Mixed Oxides ◽

Surface Composition ◽

Chemical Elements ◽

Film Material ◽

Nanocomposite Thin Film ◽

Oxide Compound ◽

Thin Film Material

A novel nanocomposite thin film material of SnO2/WO3 metal oxide compound doped by multi-walled carbon nanotubes (MWCNT) and its corresponding gas sensor were prepared by radio frequency (RF) reactive magnetron sputtering. The surface composition and chemical elements of the thin film material were respectively analyzed and validated by X-ray diffraction (XRD) and photoelectron spectroscopy (XPS). The influencing factors of gas sensing properties were studied and the test results of gas sensor were analyzed. The results indicated that the detection using the composite material gas sensors for low concentration NO2 toxic gas could be greatly improved by MWCNTs which were doped on the mixed oxides matrix. A possible mechanism explaining the behaviour of the thin film gas sensor was introduced.

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