Ammonia Gas Detection Using Fabricated Zinc Oxide (ZnO) Nanoparticles on Glass Tube Substrates
| Autor: | Franz Kevin B. Manalo, Kurt Brian Daine B. Punzalan, Emmanuel A. Florido |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Ammonia gas Mechanical Engineering chemistry.chemical_element 02 engineering and technology Zinc 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Ammonia chemistry.chemical_compound chemistry Chemical engineering Zno nanoparticles Mechanics of Materials General Materials Science 0210 nano-technology Glass tube |
| Zdroj: | Key Engineering Materials. 775:266-271 |
| ISSN: | 1662-9795 |
| Popis: | This study aimed to determine the ammonia (NH3) gas sensing ability of zinc oxide (ZnO) films deposited on glass tube substrates via successive ionic layer adsorption and reaction (SILAR) technique. The fabricated films were annealed at different temperatures. The sensor films were exposed to different volumes of ammonium hydroxide (NH4OH), converted to parts per million (ppm). The change in voltage from concentrations 595ppm up to 1189ppm exhibited a linear trend. However, no trend was revealed in concentrations 2378ppm and 3964ppm due to film saturation. Results showed that the films annealed at 250 °C, 300 °C, 350 °C, and 400 °C presented sensitivities of 2.7×10-4V/ppm, 1.0×10-4V/ppm, 2.3×10-4V/ppm, and 1.5×10-4V/ppm with R2values of 0.997, 0.994, 0.904, 0.999 and resolutions of 3.7 ppm/mV, 9.9 ppm/mV, 4.4 ppm/mV, and 6.6 ppm/mV, respectively. Furthermore, this research study had proven that high quality gas sensors may be fabricated at a lower cost. |
| Databáze: | OpenAIRE |
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