Searching for magnetism in hydrogenated graphene: Using highly hydrogenated graphene prepared via birch reduction of graphite oxides

0423866 - FZÚ 2014 RIV US eng J - Journal Article
Eng, A.Y.S. - Poh, H. L. - Šaněk, F. - Maryško, Miroslav - Matějková, Stanislava - Šofer, Z. - Pumera, M.
Searching for magnetism in hydrogenated graphene: Using highly hydrogenated graphene prepared via birch reduction of graphite oxides.
ACS Nano. Roč. 7, č. 7 (2013), s. 5930-5939. ISSN 1936-0851. E-ISSN 1936-086X
R&D Projects: GA ČR GA13-20507S
Institutional support: RVO:68378271 ; RVO:61388963
Keywords : hydrogenated graphene * graphane * graphite oxide * ferromagnetism
Subject RIV: BM - Solid Matter Physics ; Magnetism; CF - Physical ; Theoretical Chemistry (UOCHB-X)
Impact factor: 12.033, year: 2013

Fully hydrogenated graphene (graphane) and partially hydrogenated graphene materials are expected to possess various fundamentally different properties from graphene. We have prepared highly hydrogenated graphene containing 5% wt of hydrogen via Birch reduction of graphite oxide using elemental sodium in liquid NH3 as electron donor and methanol as proton donor in the reduction. We also investigate the influence of preparation method of graphite oxide, such as the Staudenmaier, Hofmann or Hummers methods on the hydrogenation rate. A control experiment involving NaNH2 instead of elemental Na was also performed. The materials were characterized in detail by electron microscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, Raman spectroscopy both at room and low temperatures, X-ray fluorescence spectroscopy, inductively coupled plasma optical emission spectroscopy, combustible elemental analysis and electrical resistivity measurements.
Permanent Link: http://hdl.handle.net/11104/0229933