Hydrogen gas detection of Nb2O5 nanoparticle-decorated CuO nanorod sensors
| Autor: | Gun-Joo Sun, Chongmu Lee, Ali Mirzaei, Hyejoon Kheel, Seung-Bok Choi, Jae Kyung Lee |
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| Rok vydání: | 2017 |
| Předmět: |
Diffraction
Spin coating Materials science Hydrogen Scanning electron microscope business.industry Metals and Alloys Nanoparticle chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Semiconductor Chemical engineering chemistry Mechanics of Materials Materials Chemistry Nanorod 0210 nano-technology business FOIL method |
| Zdroj: | Metals and Materials International. 23:214-219 |
| ISSN: | 2005-4149 1598-9623 |
| DOI: | 10.1007/s12540-017-6343-3 |
| Popis: | Pristine and Nb2O5 nanoparticles-decorated CuO nanorods were prepared successfully by a two step process: the thermal evaporation of a Cu foil and the spin coating of NbCl5 solution on CuO nanorods followed by thermal annealing. X-ray diffraction was performed to examine the structure and purity of the synthesized nanoatuctures. Scanning electron microscopy was used to examine the morphology and shape of the nanostuctures. The Nb2O5 nanoparticles-decorated CuO nanorod sensor showed responses of ~217.05-862.54%, response times of ~161-199 s and recovery times of ~163-171 s toward H2 gas with concentrations in a range of 0.5 - 5% at the optimal working temperature of 300 °C. The Nb2O5 nanoparticle-decorated CuO nanorod sensor showed superior sensing performance to the pristine CuO nanorod sensor for the same H2 concentration range. The underlying mechanism for the enhanced hydrogen sensing performance of the CuO nanorods decorated with Nb2O5 nanoparticles is discussed. |
| Databáze: | OpenAIRE |
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