NDLI: Investigations of hydrogen storage in palladium decorated graphene nanoplatelets

Content Provider	Springer Nature Link
Author	Vinayan, B. P. Sethupathi, K. Ramaprabhu, S.
Copyright Year	2011
Abstract	Carbon based nanomaterials are ideal media for hydrogen storage due to their highly porous structure, low density, and large surface area. The hydrogen uptake capacity of different carbon nanomaterials can be enhanced by spill over mechanism from a supported transition metal catalyst. In the present work graphene nanoplatelets (GNP) were prepared by thermal exfoliation method and decorated with palladium nanoparticles (Pd/GNP) by ethylene glycol reduction method. The high pressure hydrogen adsorption/desorption measurements were carried out for GNP and Pd/GNP using Sieverts apparatus in the temperature and pressure ranges of 25–100°C and 0.1–4 MPa, respectively. The hydrogen storage capacity of GNP and Pd/GNP were found to be 0.28 wt% and 1.21 wt% respectively at 25°C and 3.2 MPa pressure. Uniform dispersion of palladium nanoparticles over the surface of GNP enhances the hydrogen storage capacity of GNP by 70% due to spill over mechanism.
Starting Page	169
Ending Page	173
Page Count	5
File Format	PDF
ISSN	09722815
Journal	Transactions of the Indian Institute of Metals
Volume Number	64
Issue Number	1-2
e-ISSN	09751645
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-07-27
Publisher Place	India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	hydrogen storage graphene nanoplatelets palladium nanoparticles sieverts apparatus high pressure isotherm Tribology, Corrosion and Coatings Materials Science Metallic Materials
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

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