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Investigation of Spillover Mechanism in Palladium Decorated Hydrogen Exfoliated Functionalized Graphene
Abstract
Porous activated carbon or nanostructured carbon materials have a promising future as hydrogen storage media. The hydrogen storage capacity of nanostructured carbon materials can be further enhanced by spillover of atomic hydrogen from a supported catalyst. In the present work, both of these factors have been put to test to study the hydrogen storage capacity of palladium (Pd) nanoparticles dispersed over the surface of functionalized hydrogen-exfoliated-graphene (Pd/ f -HEG). The high-pressure hydrogen storage measurements of HEG and Pd/ f -HEG show a hydrogen storage capacity of 0.5 and 1.76 wt % respectively at 25 °C and 2 MPa pressure. Functionalization of graphene facilitates uniform dispersion of Pd nanoparticles, which result in an increased hydrogen storage capacity of graphene by 69%. Heats of adsorption have been calculated for HEG and Pd/ f -HEG that are consistent with the theoretical calculations from literature and provide an experimental evidence for the spillover effect.
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Citations
Cited by
Sui, S., Wang, X., Zhou, X., Su, Y., Riffat, S., & Liu, C.-J. (2017) · Journal of Materials Chemistry A · doi:10.1039/c6ta08580f · Cited by 916
Xu, J., Cao, Z., Zhang, Y., Yuan, Z., Lou, Z., Xu, X., & Wang, X. (2018) · Chemosphere · doi:10.1016/j.chemosphere.2017.12.061 · Cited by 786
Graphene-based materials: Synthesis and gas sorption, storage and separation
Gadipelli, S., & Guo, Z. X. (2015) · Progress in Materials Science · doi:10.1016/j.pmatsci.2014.10.004 · Cited by 734
Effect of Nitrogen Doping on Hydrogen Storage Capacity of Palladium Decorated Graphene
Parambhath, V. B., Nagar, R., & Ramaprabhu, S. (2012) · Langmuir · doi:10.1021/la301232r · Cited by 309
Self-citationVinayan, B. P., Nagar, R., Raman, V., Rajalakshmi, N., Dhathathreyan, K. S., & Ramaprabhu, S. (2012) · Journal of Materials Chemistry · doi:10.1039/c2jm16294f · Cited by 297
Self-citationVinayan, B. P., Nagar, R., & Ramaprabhu, S. (2012) · Journal of Materials Chemistry · doi:10.1039/c2jm33894g · Cited by 72
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Metadata
- Authors
- Parambhath, V. B., Nagar, R., Sethupathi, K., & Ramaprabhu, S.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-07-18
- Volume
- 115
- Issue
- 31
- Pages
- 15679-15685
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2317308487
- Cited by
- 233
- References
- 0
- FWCI
- 7.28
- Type
- journal article
- Language
- en
- Open access
- closed
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