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Pressure-induced insertion of liquid alcohols into graphite oxide structure
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
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2009 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 131, no 51, 18445-18449 p.Article in journal (Refereed) Published
Abstract [en]

Graphite oxide (GO) immersed in an excess of methanol and ethanol media is found to undergo a phase transformation at about 0.2−0.8 GPa, with an expansion of the unit cell volume by 40%, due to pressure-induced insertion of solvent into interlayer space. The pressure at which the structural expansion occurs does not correlate with the solidification pressure of the alcohol, in contrast to the graphite oxide/water system. The expanded high-pressure phase of GO/ethanol could be quenched back to ambient pressure. Compression of graphite oxide with a 2:1 water/methanol medium revealed a complex anomaly with two steps attributed to insertion of methanol and water at different pressure points.

Place, publisher, year, edition, pages
ACS Publications , 2009. Vol. 131, no 51, 18445-18449 p.
Keyword [en]
Graphite oxide, high pressure, intercalation, alcohols, ethanol, methanol, water, insertion, lattice expansion
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-30975DOI: 10.1021/ja907492sOAI: oai:DiVA.org:umu-30975DiVA: diva2:289863
Available from: 2010-01-25 Created: 2010-01-25 Last updated: 2011-02-10Bibliographically approved

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Talyzin, Alexandr V.Sundqvist, Bertil

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