Few-layer graphene-like flakes derived by plasma treatment: A potential material for hydrogen adsorption and storage

Abstract

A novel, one-step, wet-free, environmental friendly and high-yield method for producing few-layer graphene powders with large surface areas (up to 800 m²/g) and narrow nanopore sizes (0.7-0.8 nm) using plasma-induced exfoliation of natural graphite is presented. Advanced characterization techniques were employed, including scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction and N₂ gas adsorption/desorption measurements at 77 K, to investigate the morphological, elemental, structural and textural/porosity properties of these nanomaterials. Fully reversible H₂ gas adsorption/desorption isotherms with maximum gravimetric capacities of up to ∼2 wt.% at 77 K and ∼60 bar are reported here. The H₂ storage performance at 77 K is well correlated with certain textural features such as specific surface area and microporosity. The results of this work provide a valuable feedback for further research on plasma-processed graphene-based materials towards efficient H₂ storage via cryo-adsorption.

Original language	English
Pages (from-to)	482-487
Number of pages	6
Journal	Microporous and Mesoporous Materials
Volume	225
DOIs	https://doi.org/10.1016/j.micromeso.2016.01.027
Publication status	Published - 1 May 2016
Externally published	Yes

Keywords

Adsorption
Graphene
Hydrogen storage
Nanoporous powders
Plasma

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials

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10.1016/j.micromeso.2016.01.027

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Few-layer graphene-like flakes derived by plasma treatment : A potential material for hydrogen adsorption and storage. / Kostoglou, Nikolaos; Tarat, Afshin; Walters, Ian; Ryzhkov, Vladislav; Tampaxis, Christos; Charalambopoulou, Georgia; Steriotis, Theodore; Mitterer, Christian; Rebholz, Claus.

In: Microporous and Mesoporous Materials, Vol. 225, 01.05.2016, p. 482-487.

Research output: Contribution to journal › Article › peer-review

Kostoglou, Nikolaos ; Tarat, Afshin ; Walters, Ian ; Ryzhkov, Vladislav ; Tampaxis, Christos ; Charalambopoulou, Georgia ; Steriotis, Theodore ; Mitterer, Christian ; Rebholz, Claus. / Few-layer graphene-like flakes derived by plasma treatment : A potential material for hydrogen adsorption and storage. In: Microporous and Mesoporous Materials. 2016 ; Vol. 225. pp. 482-487.

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abstract = "A novel, one-step, wet-free, environmental friendly and high-yield method for producing few-layer graphene powders with large surface areas (up to 800 m2/g) and narrow nanopore sizes (0.7-0.8 nm) using plasma-induced exfoliation of natural graphite is presented. Advanced characterization techniques were employed, including scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction and N2 gas adsorption/desorption measurements at 77 K, to investigate the morphological, elemental, structural and textural/porosity properties of these nanomaterials. Fully reversible H2 gas adsorption/desorption isotherms with maximum gravimetric capacities of up to ∼2 wt.% at 77 K and ∼60 bar are reported here. The H2 storage performance at 77 K is well correlated with certain textural features such as specific surface area and microporosity. The results of this work provide a valuable feedback for further research on plasma-processed graphene-based materials towards efficient H2 storage via cryo-adsorption.",

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AU - Kostoglou, Nikolaos

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AU - Tampaxis, Christos

AU - Charalambopoulou, Georgia

AU - Steriotis, Theodore

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AB - A novel, one-step, wet-free, environmental friendly and high-yield method for producing few-layer graphene powders with large surface areas (up to 800 m2/g) and narrow nanopore sizes (0.7-0.8 nm) using plasma-induced exfoliation of natural graphite is presented. Advanced characterization techniques were employed, including scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction and N2 gas adsorption/desorption measurements at 77 K, to investigate the morphological, elemental, structural and textural/porosity properties of these nanomaterials. Fully reversible H2 gas adsorption/desorption isotherms with maximum gravimetric capacities of up to ∼2 wt.% at 77 K and ∼60 bar are reported here. The H2 storage performance at 77 K is well correlated with certain textural features such as specific surface area and microporosity. The results of this work provide a valuable feedback for further research on plasma-processed graphene-based materials towards efficient H2 storage via cryo-adsorption.

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