Preparation and ethanol sensing properties of flower-like cupric oxide hierarchical nanorods |
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| Affiliation: | 1. Laboratoire LPR, Département de Physique, Faculté des Sciences, Université Badji Mokhtar, Annaba, Algeria;2. Laboratoire de Physique et d׳électronique (LPE), Faculté des Sciences, Université, Libanaise, El Hadath, Beirut, Lebanon;3. Laboratoire de Physique Quantique et Modélisation Mathématique de la Matière (LPQ3M), Université de Mascara, 29000 Mascara, Algeria;1. Institute of Physics of National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine;2. Sumy State University, Rymsky-Korsakov Street 2, 4007 Sumy, Ukraine |
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| Abstract: | ![]()
Flower-like cupric oxide (CuO) hierarchical nanorods (petal size: 60–100 nm in diameter and 500–700 nm in length) were synthesized by wet chemical-assisted hydrothermal processing. The samples were characterized by field emission scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. The influence of hydrothermal temperature on the formation of CuO nanoflowers was investigated. Sensors based on CuO nanoflowers were fabricated by coating them on SiO2/Si substrate attached with Pt interdigitated electrodes. Sensing characteristics of the samples were measured and evaluated as a function of operating temperature and ethanol vapor concentration. The results revealed that the p-type semiconductor CuO nanoflowers based sensors exhibit high sensitivity and selectivity toward ethanol vapor with the optimum working temperature at about 230 °C. |
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| Keywords: | Hydrothermal Gas sensor Flower-like CuO PEG |
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