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- Title
Potential of copper oxide thin film-based sensor probe for carbon dioxide gas monitoring.
- Authors
Bhowmick, T.; Ghosh, A.; Ambardekar, V.; Nag, S.; Majumder, S. B.
- Abstract
An economical and portable gas-sensing prototype was developed for CO2 gas monitoring of flue gas. The effectiveness of the prototype was demonstrated with a CuO metal oxide–semiconductor thin-film sensor prepared by a modified sol–gel process. Gas concentrations of 0.8–4% were generated by a chemical reaction to mimic the large concentrations of CO2 in flue gas from industrial power plants. The fabricated prototype showed high sensitivity to the tested gas and was operable within a varied temperature range of room temperature up to 350 °C. CuO thin film exhibited a good response (~ 20%) to 8354 ppm CO2 gas with a response time of ~ 5 s at 300 °C. The dominant gas-sensing mechanism was found to be the formation of carbonates on the CuO surface.
- Subjects
CARBON dioxide detectors; COPPER oxide; FLUE gases; INDUSTRIAL gases; GASES; FACTORIES; METAL oxide semiconductor field-effect transistors
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 35, p26286
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-09312-4