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Effects of different palladium content loading on the hydrogen storage capacity of double-walled carbon nanotubes

Journal Article


Abstract


  • The effects of different amounts palladium loading on the hydrogen sorption characteristics of double-walled carbon nanotubes (DWCNTs) have been investigated. The physical properties of the pristine DWCNTs and Pd/DWCNTs were systematically characterized by X-ray diffraction, transmission electron microscopy, and Brunauer–Emmett–Teller surface area measurements. Pd nanoparticles were loaded on DWCNT surfaces for the dissociation of H2 into atomic hydrogen, which spills over to the defect sites on the DWCNTs. When we use different Pd content, the particle size and dispersion will be different, which affects the hydrogen storage capacity of the DWCNTs. In this work, the hydrogen storage capacities were measured at ambient temperature and found to be 1.7, 1.85, 3.0, and 2.0 wt% for pristine DWCNTS, 1.0 wt%Pd/DWCNTs, 2.0 wt%Pd/DWCNTs, and 3.0 wt%Pd/DWCNTs, respectively. We found that the hydrogen storage capacity can be enhanced by loading with Pd nanoparticles and selecting a suitable content. Furthermore, the sorption can be attributed to the chemical reaction between the atomic hydrogen and the dangling bonds of the DWCNTs.

Publication Date


  • 2012

Citation


  • Wu, H., Wexler, D. & Liu, H. K. 2012, 'Effects of different palladium content loading on the hydrogen storage capacity of double-walled carbon nanotubes', International Journal of Hydrogen Energy, vol. 37, no. 7, pp. 5686-5690.

Scopus Eid


  • 2-s2.0-84858277354

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1003

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 5686

End Page


  • 5690

Volume


  • 37

Issue


  • 7

Place Of Publication


  • United Kingdom

Abstract


  • The effects of different amounts palladium loading on the hydrogen sorption characteristics of double-walled carbon nanotubes (DWCNTs) have been investigated. The physical properties of the pristine DWCNTs and Pd/DWCNTs were systematically characterized by X-ray diffraction, transmission electron microscopy, and Brunauer–Emmett–Teller surface area measurements. Pd nanoparticles were loaded on DWCNT surfaces for the dissociation of H2 into atomic hydrogen, which spills over to the defect sites on the DWCNTs. When we use different Pd content, the particle size and dispersion will be different, which affects the hydrogen storage capacity of the DWCNTs. In this work, the hydrogen storage capacities were measured at ambient temperature and found to be 1.7, 1.85, 3.0, and 2.0 wt% for pristine DWCNTS, 1.0 wt%Pd/DWCNTs, 2.0 wt%Pd/DWCNTs, and 3.0 wt%Pd/DWCNTs, respectively. We found that the hydrogen storage capacity can be enhanced by loading with Pd nanoparticles and selecting a suitable content. Furthermore, the sorption can be attributed to the chemical reaction between the atomic hydrogen and the dangling bonds of the DWCNTs.

Publication Date


  • 2012

Citation


  • Wu, H., Wexler, D. & Liu, H. K. 2012, 'Effects of different palladium content loading on the hydrogen storage capacity of double-walled carbon nanotubes', International Journal of Hydrogen Energy, vol. 37, no. 7, pp. 5686-5690.

Scopus Eid


  • 2-s2.0-84858277354

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1003

Has Global Citation Frequency


Number Of Pages


  • 4

Start Page


  • 5686

End Page


  • 5690

Volume


  • 37

Issue


  • 7

Place Of Publication


  • United Kingdom