Nano-bitter gourd like structured CuO for enhanced hydrogen gas sensor application
| Autor: | Yoon-Bong Hahn, Eun-Kyung Suh, Rafiq Ahmad, Yeon-Tae Yu, Pramila Patil, Umesh T. Nakate, Gun Hee Lee |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Hydrogen Bitter gourd Analytical chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences symbols.namesake X-ray photoelectron spectroscopy Operating temperature Phase (matter) Nano biology Renewable Energy Sustainability and the Environment 021001 nanoscience & nanotechnology Condensed Matter Physics biology.organism_classification 0104 chemical sciences Fuel Technology chemistry symbols Gourd 0210 nano-technology Raman spectroscopy |
| Zdroj: | International Journal of Hydrogen Energy. 43:22705-22714 |
| ISSN: | 0360-3199 |
| Popis: | Hydrogen gas sensing were investigated using nano-bitter gourd like structured CuO material synthesized via a chemical route. Morphology of CuO was revealed using FE-SEM and TEM image analysis. CuO phase confirmation and molecular structural fingerprint were verified by XRD and Raman analysis respectively. Elemental composition and atomic states of elements were investigated by EDS and XPS techniques respectively. A remarkable high gas response of 175% was recorded by CuO sensor towards 100 ppm hydrogen (H2) at the operating temperature 200 °C with response time 150 s. The lowest detection of H2 was observed at 2 ppm concentration with the gas response of 5%. The gas response was studied as functions of different operating temperatures and concentrations. Transient gas response and stability were also confirmed for CuO sensor. Hydrogen sensing mechanism of CuO sensor was elucidated. |
| Databáze: | OpenAIRE |
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