Synthesis and morphological properties of graphene on metal and dielectric nanoparticles

The article considers the possibility of applying carbon coatings to nanoparticles by chemical vapor deposition. It has been shown that multilayer graphene can be synthesized on metal and aluminum oxide nanoparticles. It is shown, that carbon films on metal nanoparticles has high structural perfection, despite the significant difference in geometry from planar one. Using a mixture of these nanoparticles, sintering of metal powders can be avoided. The synthesis of carbon coatings on the ensembles of metal nanoparticles, which is formed on a dielectric substrate as a result of thermal coagulation of a thin film, is also analyzed. Such coatings have different morphological properties depending on the thickness of the initial film and the resulting nanoparticle sizes, most often they are multilayer graphene. Raman spectroscopy, atomic force microscopy, X-ray diffraction and reflectometry are used as research methods.