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Sensors 2009, 9(9), 7203-7216; doi:10.3390/s90907203

Thick-Film Carbon Dioxide Sensor via Anodic Adsorbate Stripping Technique and Its Structural Dependence

1
Chemical Engineering Department, Case Western Reserve University, 10900 Euclid Ave., Cleveland OH 44106, USA
2
Chemical Engineering Department, I-Shuo University, 1, Sec. 1, Syuecheng Rd., Dashu Township, Kaohsiung County 840, Taiwan
*
Author to whom correspondence should be addressed.
Received: 30 July 2009 / Revised: 27 August 2009 / Accepted: 31 August 2009 / Published: 9 September 2009
(This article belongs to the Section Chemical Sensors)
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Abstract

A three-electrode based CO2 sensor was fabricated using thick-film technology. The performance of this sensor was further enhanced by incorporating platinum nanoparticles onto the working electrode surface. An eight-fold increase in the signal output was obtained from the electrode with the platinum nanoparticles. The sensing output was linearly related to the CO2 presented. Stability measurements demonstrated that the decline of the active surface area and the sensitivity of the sensor were 8% and 13%, respectively, over a two week period of time. The sensor response appeared to be a structural dependence of the crystallographic orientation of platinum electrode. View Full-Text
Keywords: carbon dioxide sensor; anodic adsorbate stripping; thick-film; platinum nanoparticles; structural dependence carbon dioxide sensor; anodic adsorbate stripping; thick-film; platinum nanoparticles; structural dependence
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MDPI and ACS Style

Photinon, K.; Wang, S.-H.; Liu, C.-C. Thick-Film Carbon Dioxide Sensor via Anodic Adsorbate Stripping Technique and Its Structural Dependence. Sensors 2009, 9, 7203-7216.

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