Preparation method of metal-catalyzed epitaxial growth graphene

Abstract

The invention discloses a preparation method of metal-catalyzed epitaxial growth graphene. The preparation method comprises the steps: step 1, completely extracting substances in a sealed container, and making the interior of the sealed container in an ultrahigh vacuum state; step 2, placing a transition metal substrate in the sealed container; step 3, conveying a hydrocarbon to the sealed container to make the hydrocarbon conveyed to the surface of the transition metal substrate; step 4, next, heating the sealed container at the heating temperature of 30-180 DEG C; and step 5, carrying out catalytic dehydrogenation on adsorption gas in the container through heating in the sealed container heating process to obtain graphene. According to the preparation method, the preparation efficiency of the graphene can be effectively improved, the graphene can continuously, uniformly and extensively grow in the sealed container through metal catalysis, the requirements of a characteristic environment are greatly reduced, and the complexity and steps during preparation are reduced; and meanwhile, the metal substrate can be removed through chemical corrosion, and manpower and material resourcesare saved.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to a preparation method of metal-catalyzed epitaxial growth graphene. Background technique [0002] Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms in a hexagonal honeycomb lattice with sp² hybrid orbitals. Graphene has excellent optical, electrical, and mechanical properties. It is used in materials science, micro-nano processing, energy, and biology. It has important application prospects in medicine and drug delivery, and is considered to be a revolutionary material in the future. [0003] The existing graphene is relatively complicated and cumbersome to prepare, requires more cumbersome steps, and requires a more unique manufacturing environment to be prepared, and the prepared graphene area is small and not uniform enough, so it is difficult to collect and use as a whole. It increases the difficulty of work for workers and R&D personnel, wastes manp...

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of preparation method of metal-catalyzed epitaxial growth graphene, to solve the existing graphene that proposes in the above-mentioned background technology when preparation is comparatively complicated and loaded down with trivial details, needs more loaded down with trivial details steps, and needs comparatively unique The production environment can only be prepared, and the area of ​​the prepared graphene is small, and it is not uniform enough, so it is difficult to collect and use it as a whole.

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