Synthesis of carbon nanotube-TiO(2) nanotubular material for reversible hydrogen storage |
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Authors: | Mishra Amrita Banerjee Subarna Mohapatra Susanta K Graeve Olivia A Misra Mano |
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Affiliation: | Chemical and Materials Engineering, MS 388, University of Nevada Reno, NV 89557, USA. |
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Abstract: | A material consisting of multi-walled carbon nanotubes (MWCNTs) and larger titania (TiO(2)) nanotube arrays has been produced and found to be efficient for reversible hydrogen (H(2)) storage. The TiO(2) nanotube arrays (diameter ~60?nm and length ~2-3?μm) are grown on a Ti substrate, and?MWCNTs a few μm in length and ~30-60?nm in diameter are grown inside these TiO(2) nanotubes using chemical vapor deposition with cobalt as a catalyst. The resulting material has been used in H(2) storage experiments based on a volumetric method using the pressure, composition, and temperature relationship of the storage media. This material can store up to 2.5?wt% of H(2) at 77?K under 25?bar with more than 90% reversibility. |
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