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

Sensors

Kanokorn Photinon²  Shih-Han Wang¹ 

[1] Chemical Engineering Department, I-Shuo University, 1, Sec. 1, Syuecheng Rd., Dashu Township, Kaohsiung County 840, Taiwan; E-Mail:;Chemical Engineering Department, Case Western Reserve University, 10900 Euclid Ave., Cleveland OH 44106, USA; E-Mail:

关键词: carbon dioxide sensor;    anodic adsorbate stripping;    thick-film;    platinum nanoparticles;    structural dependence;   

DOI  :  10.3390/s90907203

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2009 by the authors; licensee MDPI, Basel, Switzerland