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Graphene decorated with metal nanoparticles: Hydrogen sorption andrelated artefacts
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
2017 (English)In: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 250, 27-34 p.Article in journal (Refereed) Published
Abstract [en]

Hydrogen sorption by reduced graphene oxides (r-GO) is not found to increase after decoration with Pd and Pt nanoparticles. Treatments of metal decorated samples using annealing under hydrogen or air were tested as a method to create additional pores by effects of r-GO etching around nanoparticles. Increase of Specific Surface Area (SSA) was observed for some air annealed r-GO samples. However, the same treatments applied to activated r-GO samples with microporous nature and higher surface area result in breakup of structure and dramatic decrease of SSA. Our experiments have not revealed effects which could be attributed to spillover in hydrogen sorption on Pd or Pt decorated graphene. However, we report irreversible chemisorption of hydrogen for some samples which can be mistakenly assigned to spillover if the experiments are incomplete.

Place, publisher, year, edition, pages
2017. Vol. 250, 27-34 p.
Keyword [en]
graphene; hydrogen storage
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:umu:diva-135589DOI: 10.1016/j.micromeso.2017.05.014OAI: oai:DiVA.org:umu-135589DiVA: diva2:1103971
Funder
EU, Horizon 2020
Available from: 2017-05-31 Created: 2017-05-31 Last updated: 2017-05-31

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Klechikov, AlexeyTalyzin, Alexandr
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