Biomedical Engineering Reference
In-Depth Information
Chapter 5
Structural and Electronic Properties of
Hydrogenated Graphene
Tanglaw Roman and Hideaki Kasai
Department of Applied Physics, Osaka University, 2-1 Yamadaoka, Suita,
Osaka 565-0871, Japan
roman@dyn.ap.eng.osaka-u.ac.jp
5.1
Introduction
The stable, two-dimensional graphene material is the simplest
allotrope of carbon, while hydrogen is the simplest of all the chemical
elements. Therefore, in order to investigate carbon's nanomaterials
for gas adsorption it is important to examine the hydrogenation of
graphene. This simplicity makes this heterogeneous system the best
playground for material scientists to understand, and subsequently
control, carbon materials suitable for various applications. For
example, hydrogen in amorphous and diamond-like carbon has been
studied for the tribological properties of the system, and studies on
hydrogenation-dehydrogenation processes on graphitic surfaces
have been fueled by the need to understand reactions in interstellar
media. Moreover, the inherent lightness and reported high hydrogen
uptake of carbon materials have increased the interest in the use of
this class of materials in hydrogen-powered vehicles, and the recent
