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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.116  No.1355 (July) (2008)  >  pp.777-780

Journal of the Ceramic Society of Japan
<<Previous article Vol.116  No.1355 (July) (2008)   pp.777 - 780 Next article>>

Potentiometric VOCs detection using 8YSZ based oxygen sensor

Masami MORI1), Hiroyuki NISHIMURA1), Hidenori YAHIRO1) and Yoshihiko SADAOKA1)
1) Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University

  Solid-state electrochemical sensors for volatile organic compounds (VOCs) based on commercial yttria stabilized zirconia (YSZ) sheet were fabricated using Pt or Pt covered with SmFeO3 layers as electrodes. The sensing performances were strongly influenced by the surface morphology of YSZ. The overcoat with SmFeO3 layer on the one side electrode enhanced the sensitivity for some VOCs. Even for 0.5 ppm of methyl ethyl ketone, ethanol and acetic acid, the changes of the electromotive force (EMF) in the levels of 20 mV and higher were confirmed at 400°C for the monolithic type sensor in which one side electrode was over-coated with SmFeO3 powders.


Keyword:
Zirconia, VOCs, EMF, Oxygen sensor, Gas sensor

Received: November 02, 2007
Accepted: May 15, 2008 , Published online: July 01, 2008
Copyright (c) 2008 The Ceramic Society of Japan

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