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Single step process for the synthesis of carbon nanotubes and metal/alloy-filled multiwalled carbon nanotubes

Abstract

A single-step approach for the synthesis of multi-walled nanotubes (MWNT) filled with nanowires of Ni/ternary Zr based hydrogen storage alloy has been illustrated. We also demonstrate the generation of CO-free hydrogen by methane decomposition over alloy hydride catalyst. The present work also highlights the formation of single-walled nanotubes (SWNT) and MWNTs at varying process conditions. These carbon nanostructures have been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution TEM (HRTEM), Energy dispersive X-ray analysis (EDX) and Raman spectroscopy. This new approach overcomes the existing multi-step process limitation, with possible impact on the development of future fuel cell, nano-battery and hydrogen sensor technologies.

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Acknowledgements

We gratefully acknowledge financial support received from DRDO, RCI, NMRL and MHRD, Govt. of India for the present work.

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Correspondence to S. Ramaprabhu.

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Keywords

  • Carbon nanotubes
  • Nanowires
  • Encapsulation
  • Hydrogen production
  • Alloys
  • Chemical vapour deposition