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학술지 A Carbon Dioxide Gas Sensor based on Cobalt Oxide Containing Barium Carbonate
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저자
김도엽, 강현태, 최낙진, 박강현, 이형근
발행일
201709
출처
Sensors and Actuators B : Chemical, v.248, pp.987-992
ISSN
0925-4005
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.snb.2017.02.160
협약과제
16PB1500, 지능형 무선통신 복합 센서모듈 기반의 유해환경 통합관리 시스템, 이형근
초록
A CO2 gas sensor based on a metal oxide semiconductor was prepared using spinel-type Co3O4 as a sensing material. The sensing properties of the prepared Co3O4 were tested at various concentrations (500??10000혻ppm) of CO2 gas at the operating temperatures of 150 and 200혻°C that are relatively low temperatures compared to those of the conventional semiconductor gas sensors. We confirmed metal carbonate species created by the reaction between Co3O4 and CO2 through X-ray photoelectron spectroscopy analysis before and after exposure to CO2. In addition, barium carbonate (BaCO3) was doped into Co3O4 in order to improve the stability of the sensor response as well as the performance of sensor to CO2 under different humid conditions.
키워드
Barium, Carbon dioxide, Carbonate, Cobalt oxide, Gas sensor
KSP 제안 키워드
Barium carbonate, Carbon dioxide gas sensor, Carbonate species, Cobalt Oxide, Humid conditions, Low temperature(LT), Metal carbonates, Metal-oxide(MOX), Semiconductor gas sensor, Sensing material, Sensor based