A carbon dioxide gas sensor based on cobalt oxide containing barium carbonate
| Autor: | Hyuntae Kang, Hyung-Kun Lee, Do Yeob Kim, Kang Hyun Park, Nak-Jin Choi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Inorganic chemistry chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Metal chemistry.chemical_compound X-ray photoelectron spectroscopy Materials Chemistry Electrical and Electronic Engineering Instrumentation Cobalt oxide Doping Metals and Alloys Barium 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry visual_art Carbon dioxide visual_art.visual_art_medium Carbonate Barium carbonate 0210 nano-technology |
| Zdroj: | Sensors and Actuators B: Chemical. 248:987-992 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2017.02.160 |
| Popis: | A CO 2 gas sensor based on a metal oxide semiconductor was prepared using spinel-type Co 3 O 4 as a sensing material. The sensing properties of the prepared Co 3 O 4 were tested at various concentrations (500–10000 ppm) of CO 2 gas at the operating temperatures of 150 and 200 °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 Co 3 O 4 and CO 2 through X-ray photoelectron spectroscopy analysis before and after exposure to CO 2 . In addition, barium carbonate (BaCO 3 ) was doped into Co 3 O 4 in order to improve the stability of the sensor response as well as the performance of sensor to CO 2 under different humid conditions. |
| Databáze: | OpenAIRE |
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