Hydrogen adsorption on single walled carbon nanotubes-tungsten trioxide composite
| Autor: | Velappa Jayaraman Surya, T. R. Ravindran, M. Jeyanthinath, Veerapandy Vasu, K. Iyakutti, D. Silambarasan |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment Cryo-adsorption Inorganic chemistry Composite number Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Tungsten trioxide Hydrogen purifier 0104 chemical sciences chemistry.chemical_compound Hydrogen storage Fuel Technology Adsorption chemistry Chemisorption 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 42:25294-25302 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2017.08.066 |
| Popis: | In this work, hydrogen storage property of single walled carbon nanotubes-tungsten trioxide (SWCNTs-WO 3 ) composite is investigated. The composite is prepared and hydrogenated by electron beam (e-beam) evaporation technique. Hydrogenation is carried out during the preparation of the composite itself. The amount of hydrogen uptake by the composite is 2.7 wt%, which is due to the collective adsorption of hydrogen by CNTs and WO 3 nanostructured materials, the method of preparation and hydrogenation involved. The incorporated hydrogen is completely (100%) released in the temperature range of 175–305 °C which in turn infers that the hydrogenated composite is stable at room temperature. The stored hydrogen has the average binding energy of 0.4 eV and the nature of binding is found to be weak chemisorption. Spillover mechanism is attributed for the hydrogen uptake of the composite. |
| Databáze: | OpenAIRE |
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