Process for obtaining graphene oxide nanoplates and derived products, and graphene oxide nanoplates thus obtained
A graphene nanosheet, graphene layer technology, applied in graphene nanoribbons, graphene, graphite and other directions, can solve the problem of not having polygonal appearance and the like
Active Publication Date: 2015-07-15
GRP ANTOLIN ING SA
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[0024] On the other hand, these nanoribbons have very irregular edges at the atomic scale, so they do not have a polygonal appearance
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[0080] The process of obtaining graphene oxide nanosheets (5) is divided into two distinct stages, the first stage is the process of obtaining the intermediate material (3) and the second stage is the process of obtaining this intermediate material (3) from the first stage of the process ) to obtain graphene oxide nanosheets (5).
[0081] figure 1 It can be seen that a diagram of the production process for obtaining graphene oxide nanosheets (5) according to the invention is shown, the first stage of which is represented by steps a), b) and c) and the second stage by step d) , e) and f) said.
[0082] The first stage of the process begins with step a) of compound (1) required to obtain intermediate material (3), and in particular at least:
[0083] i. Hydrocarbons or mixtures of hydrocarbons, such as methane or mixtures whose main constituent is more than 50% methane,
[0084] ii. nickel compound and sulfur compound to produce catalytically reactive particles wherein prefer...
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Abstract
A method for manufacturing graphene oxide nanoplatelets and derivative products and the graphene oxide nanoplatelets obtained, comprising two distinct phases, a first phase for obtaining an intermediate material consisting of carbon nanofilaments, each one having a structure comprising continuous ribbon of graphitic material with a small number of stacked monoatomic graphene layers and spirally rolled around and along the main axis of said nanofilaments, and a second phase wherein said carbon nanofilaments are subjected to a high-temperature treatment in order to clean said filaments and increase their degree of crystallinity. Once these nanofilaments are treated, a chemical etching is performed on them comprising an oxidation that causes the fragmentation of the carbon nanofilaments and starts a cleaving method that is completed by physical means in order to obtain graphene oxide nanoplatelets.
Description
technical field [0001] The present invention relates to a process for obtaining graphene oxide nanosheets and derivative products and graphene oxide nanosheets obtained therefrom. [0002] The invention is characterized in that the process for obtaining graphene oxide nanoplatelets comprises a first stage which allows obtaining an intermediate material for the subsequent production of graphene oxide nanoplatelets, wherein this obtained intermediate material consists of carbon nanofilaments whose structure comprises There is a continuous ribbon of graphitic material with a small number of graphene layers stacked on top of each other and coiled along the filament. [0003] The invention is characterized in that the process for obtaining graphene oxide nanoplatelets comprises a second stage in which said nanofilaments are subjected to a high temperature treatment process to purify, dehydrogenate, defunctionalize and crystallize. Background technique [0004] Graphene is a mate...
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IPC IPC(8): C01B31/04B82Y40/00
CPCC01B31/0453B82Y30/00C01B2204/06C01B31/0476C01B2204/04B82Y40/00C01B31/0484C01B31/043C01B32/23C01B32/186C01B32/192C01B32/194Y10T428/2982
Inventor 恺撒·麦利诺·桑切斯伊格纳西奥·马丁·古利翁海伦娜·瓦雷拉·里佐玛丽亚·德·皮乐·麦利诺·奥玛叶拉斯
Owner GRP ANTOLIN ING SA