Centre National De La Recherche Scientifique

UniversitÉde Strasbourg

Université Louis Pasteur

Dominique Begin

Cuong Pham-Huu

Marc-Jacques Ledoux

Izabela Janowska

Marc J Ledoux

Nicolas Keller

Pierre Bernhardt

Patrick Nguyen

Valérie Keller-Spitzer

Jean-Philippe Tessonnier

Thierry Romero

Mathieu Grandcolas

Ovidiu Ersen

Kambiz Chizari

Shabnam Hajesmaili

Julien Amadou

Marc LeDoux

Nathanaëlle Wurtz

Sébastien Josset

Pham-Huu Cuong

Nizar Doss

Cuong Pahm-Huu

The preparation of graphene, mono-, bi- and multi-layers from graphite-based precursor materials, for example, pencil lead or graphite, by a method of mechanical thinning on the surface of a planar substrate with controlled roughness, followed by sonication in order to collect the graphene deposited on the substrate in a liquid medium. The bearing force during thinning by mechanical friction enables the number of graphene sheets deposited on the surface of the substrate to be controlled.

Preparation of graphene by mechanically thinning graphite materials

The invention relates to a photocatalyst comprising a &#x3b2;-SiC cellular foam and a photocatalytically active phase, deposited directly on said cellular foam or on an intermediate phase deposited on said cellular foam. The average size of the cells is between 2500 &#x3bc;m and 5000 &#x3bc;m. The foam can comprise nanotubes or nanofibers (particularly of carbon, SiC, and TiO) that consist of, or carry as an intermediate phase, a photocatalytically active phase.

Photocatalysts based on structured three-dimensional carbide, in particular &#x3b2;-SiC, foams

A method of preparing a solid material based on tangled nanotubes and/or nanofibers, includes a step of growing carbon nanofibers and/or nanotubes with restraint in a contained reactor; and the materials thus obtained. The different uses of the materials are also disclosed.

Materials based on tangled nanotubes or nanofibres, preparation method thereof and use of same

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Achenheim, France

Dominique Begin