Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
Feature: The 56th Symposium on Basic Science of Ceramics: Full papers
Sensitivity enhancement of catalytic combustion-type CO gas sensor using an artificial diamond with Pt-loaded CeO2–ZrO2–ZnO based catalyst
Pattaraphon RODLAMULShinji TAMURANobuhito IMANAKA
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2018 Volume 126 Issue 10 Pages 750-754

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Abstract

Catalytic combustion-type CO gas sensors employing the mixture of Pt-loaded CeO2–ZrO2–ZnO catalyst and artificial diamond with high thermal conductive nature were successfully fabricated. While the sensor employing only Pt-loaded CeO2–ZrO2–ZnO catalyst exhibited CO sensing performance over 100°C with high electrical noise, the sensor with the mixture of artificial diamond and the catalyst could operate even at 80°C and the electrical noise was also reduced. At the same operating temperature at 130°C at which both sensors showed the highest sensitivity, the 50% response time toward CO gas concentration change was accelerated from 103 s for the sensor without artificial diamond to 76 s by using the sensor with artificial diamond. Furthermore, the sensitivity toward CO gas was also increased.

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© 2018 The Ceramic Society of Japan
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