Response of TiO₂/MWCNT/B₂O₃ gas sensor to hydrogen using different organic binder
A binder influences the sensitivity, resistivity and optimal operating temperature of a gas sensor, which plays an important role in gas sensing. This work compared the sensitivity of the TiO₂/MWCNT/B₂O ₃ gas sensor to hydrogen with the addition of different organic binders, namely linseed oil and e...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/82004/ http://psasir.upm.edu.my/id/eprint/82004/1/Response%20of%20TiO%E2%82%82MWCNTB%E2%82%82O%E2%82%83%20gas%20sensor%20to%20hydrogen%20using%20different%20organic%20binder.pdf |
| Summary: | A binder influences the sensitivity, resistivity and optimal operating temperature of a gas sensor, which plays an important role in gas sensing. This work compared the sensitivity of the TiO₂/MWCNT/B₂O ₃ gas sensor to hydrogen with the addition of different organic binders, namely linseed oil and ethyl cellulose, to TiO₂/MWCNT/B₂O ₃ paste. Both pastes were deposited on alumina substrate using the screen-printing method and annealed at 500 °C. The sensing films of gas sensor, OBL and OBE were characterized by field emission scanning electron microscopy (FESEM), Energy dispersive x-ray (EDX), X-ray diffraction (XRD) Raman Spectroscopy and Brunauer-Emmett-Teller (BET). The gas sensors were also exposed to different concentrations of hydrogen (100–1000 ppm) at various operating temperature (100 °C, 200 °C and 300 °C). The obtained results revealed that ethyl cellulose-based gas sensor achieves better sensitivity, whereas linseed oil-based gas sensor has better conductivity and recovery characteristic. |
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