A preparation method of graphene oxide sheet/liquid crystal/film with different number of layers

A technology of graphene film and graphene sheet, which is applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems that the self-assembly process of graphene oxide sheet has not been reported, and achieve good application prospects, simple method, The effect of controllable film size
CN105174248BActive Publication Date: 2017-12-29ZHENGZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHENGZHOU UNIV
Publication Date
2017-12-29

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Abstract

The invention belongs to the technical field of graphene oxide preparation, and specifically discloses a method for preparing graphene oxide sheets / liquid crystals / films with different numbers of layers. Disperse graphite oxide in a solvent, ultrasonically treat it, and then centrifuge it. Extract the lower layer of the centrifuge tube every 0.5-3 hours and mark it as a group of samples until the upper layer is colorless and transparent. Remove the solvent in the sample to obtain oxidation. Graphene sheet; the graphene oxide sheet is further centrifuged and concentrated, and the lower layer is removed to remove the solvent to obtain the graphene oxide liquid crystal; the graphene oxide liquid crystal is drop-coated on the substrate, and dried at 15-35°C to obtain the graphene oxide film . The invention solves the problem that the multi-layer, two-layer and one-layer graphene oxide sheets cannot be accurately obtained at the same time and the complicated preparation of the liquid crystal phase is solved. The graphene oxide liquid crystal of the invention is simple to prepare, has zero loss of raw materials, short film assembly cycle, and the obtained film has optical anti-counterfeiting ability, so that it has good development prospects in the field of anti-counterfeiting.
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Description

technical field

[0001] The invention belongs to the technical field of graphene oxide preparation, in particular to a method for preparing graphene oxide sheets / liquid crystals / films with different numbers of layers. Background technique

[0002] Graphene oxide with liquid crystal behavior can self-assemble effectively, and the formed self-assembled material has excellent mechanical strength and good toughness, so it has great application prospects as a building block material. The liquid crystal behavior of single-layer graphene oxide sheets has been reported, but the liquid crystal behavior and self-assembly process of multi-layer and two-layer graphene oxide sheets have not been reported yet. Therefore, the development and utilization of two-layer and multi-layer graphene oxide liquid crystal behavior is beneficial to the effective utilization of resources and has great economic and social significance. Contents of the invention

[0003] The object of the present inven...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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