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Sensors 2010, 10(7), 6513-6521; doi:10.3390/s100706513

Effects of High-Humidity Aging on Platinum, Palladium, and Gold Loaded Tin Oxide—Volatile Organic Compound Sensors

1
National Institute of Advanced Industrial Science and Technology (AIST), Shimo-Shidami, Moriyama-ku, Nagoya 463-8560, Japan
2
Toyama Industrial Technology Center, 383 Takada, Toyama 930-0866, Japan
*
Author to whom correspondence should be addressed.
Received: 29 May 2010 / Revised: 15 June 2010 / Accepted: 25 June 2010 / Published: 6 July 2010
(This article belongs to the Section Chemical Sensors)
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Abstract

This study is an investigation of high-humidity aging effects on the total volatile organic compound (T–VOC) gas-sensing properties of platinum, palladium, and gold-loaded tin oxide (Pt,Pd,Au/SnO2) thick films. The sensor responses of the high-humidity aged Pt,Pd,Au/SnO2, a non-aged Pt,Pd,Au/SnO2, and a high-humidity aged Pt/SnO2 to T–VOC test gas have been measured. The high-humidity aging is an effective treatment for resistance to humidity change for the Pt,Pd,Au/SnO2 but not effective for the Pt/SnO2. The mechanism of the high-humidity aging effects is discussed based on the change of surface state of the SnO2 particles. View Full-Text
Keywords: gas sensor; tin oxide; noble metal loaded tin oxide; T–VOC test gas; high-humidity aging gas sensor; tin oxide; noble metal loaded tin oxide; T–VOC test gas; high-humidity aging
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Itoh, T.; Matsubara, I.; Kadosaki, M.; Sakai, Y.; Shin, W.; Izu, N.; Nishibori, M. Effects of High-Humidity Aging on Platinum, Palladium, and Gold Loaded Tin Oxide—Volatile Organic Compound Sensors. Sensors 2010, 10, 6513-6521.

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