Selective detection of ethanol vapor using xTiO2-(1 - x)WO3 based sensor

C. V. Gopal Reddy; W. Cao; O. K. Tan; W. Zhu; S. A. Akbar

doi:10.1016/S0925-4005(03)00169-2

Selective detection of ethanol vapor using xTiO₂-(1 - x)WO₃ based sensor

C. V. Gopal Reddy^*, W. Cao, O. K. Tan, W. Zhu, S. A. Akbar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

The mechanical alloying of xTiO₂-(1 - x)WO₃ powder was achieved by high-energy ball milling at room temperature. The particle size, phase analysis and alcohol gas sensing properties of this material have been characterized using thermo-gravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and gas sensing measurements. Screen-printed thick-film gas sensors made from mechanically alloyed materials demonstrate good sensitivity for 1000ppm of ethanol gas in air at an operating temperature of 160 °C. Gas sensing behavior of this material to various other reducing gases such as CH₄, CO and H₂ has also been studied. This sensor shows good selectivity toward ethanol and could effectively be used as a breath sensor.

Original language	English
Pages (from-to)	99-102
Number of pages	4
Journal	Sensors and Actuators, B: Chemical
Volume	94
Issue number	1
DOIs	https://doi.org/10.1016/S0925-4005(03)00169-2
Publication status	Published - Aug 15 2003
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

Keywords

Ethanol sensor
High-energy ball milling
Nano-powder
Thick-films

Access to Document

10.1016/S0925-4005(03)00169-2

Cite this

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abstract = "The mechanical alloying of xTiO2-(1 - x)WO3 powder was achieved by high-energy ball milling at room temperature. The particle size, phase analysis and alcohol gas sensing properties of this material have been characterized using thermo-gravimetric analysis (TGA), differential thermal analysis (DTA), X-ray diffraction (XRD) and gas sensing measurements. Screen-printed thick-film gas sensors made from mechanically alloyed materials demonstrate good sensitivity for 1000ppm of ethanol gas in air at an operating temperature of 160 °C. Gas sensing behavior of this material to various other reducing gases such as CH4, CO and H2 has also been studied. This sensor shows good selectivity toward ethanol and could effectively be used as a breath sensor.",

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AU - Akbar, S. A.

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