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Titania-Based Miniature Potentiometric Carbon Monoxide Gas Sensors with High Sensitivity
 

Summary: Titania-Based Miniature Potentiometric Carbon Monoxide Gas Sensors
with High Sensitivity
Jun-Young Parkw
Department of Advanced Materials Engineering, Sejong University, Seoul 143-747, Korea
Abdul-Majeed Azad
Department of Chemical and Environmental Engineering, University of Toledo, Toledo, Ohio 43606
Sun-Ju Song
Department of Materials Science and Engineering, Chonnam National University, Gwangju 550-749, Korea
Eric D. Wachsman
Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611
Miniature, potentiometric, solid-state, carbon monoxide (CO)
sensors with semiconducting oxide electrodes were investigated
over the temperature range 50017001C. The effects of the
electrochemical properties of the semiconducting oxides, after
the addition of a catalyst and an alkaline metal oxide were
evaluated in terms of the improvement in selectivity and response
time. A sensor with high sensitivity and reversibility was ob-
tained using a combination of an n- (titania) and p-type (com-
posite titania with yttria and palladium) electrode to form a
difference in the electrode equilibria. The device was able to

  

Source: Azad, Abdul-Majeed - Department of Chemical and Environmental Engineering, University of Toledo

 

Collections: Materials Science; Energy Storage, Conversion and Utilization