Response of TiO2/MWCNT/B2O3 gas sensor to hydrogen using different organic binder
| Autor: | Shuhazlly Mamat, Mehmet Ertugrul, Siti Amaniah Mohd Chachuli, Mohd Nizar Hamidon, Nor Hapishah Abdullah |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
food.ingredient
Materials science Hydrogen chemistry.chemical_element 02 engineering and technology Conductivity 01 natural sciences symbols.namesake chemistry.chemical_compound food Ethyl cellulose Linseed oil Operating temperature Electrical resistivity and conductivity 0103 physical sciences General Materials Science 010302 applied physics Mechanical Engineering Substrate (chemistry) 021001 nanoscience & nanotechnology Condensed Matter Physics Chemical engineering chemistry Mechanics of Materials symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Materials Science in Semiconductor Processing. 99:140-148 |
| ISSN: | 1369-8001 |
| DOI: | 10.1016/j.mssp.2019.04.009 |
| Popis: | 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/B2O3 gas sensor to hydrogen with the addition of different organic binders, namely linseed oil and ethyl cellulose, to TiO2/MWCNT/B2O3 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. |
| Databáze: | OpenAIRE |
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