Selective Sensing of Carbon Monoxide Gas in CuO banded ZnO Ceramics

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J. Korean Ceram. Soc. > Volume 30(10); 1993 > Article

Journal of the Korean Ceramic Society 1993;30(10): 819.

CuO띠가 입혀진 ZnO 소결체의 일산화탄소에 대한 선택적 감지 특성

신병철

산업과학기술연구소

Selective Sensing of Carbon Monoxide Gas in CuO banded ZnO Ceramics

ABSTRACT

The purpose of this paper is a investigation of sensing mechanism for the carbon monoxide gas in CuO infiltrated ZnO ceramics. Potential barriers between CuO and ZnO can explain the selective sensing of carbon monoxide gas in the physically contacted CuO/ZnO ceramics. A specimen having no potential barrier between CuO and ZnO was prepared to see whether the gas sensing mechanism is related to the potential barrier. CuO and ZnO was prepared to see whether the gas sensing mechanism is related to the potential barrier. CuO was painted on the non electrode sides of ZnO ceramics. The CuO painted ZnO ceramics showed that the sensitivityfor the carbon moxnoxide gas was 1.3 times as high as that for the hydrogen gas. It is almost same gas sensitivity as that of the CuO infiltrated ZnO ceramics.