Graphene band prepared with acid oxidized flat carbon nano-tube and method for preparing graphene band

Abstract

The invention relates to a graphene band prepared with an acid oxidized flat carbon nano-tube and a method for preparing the graphene band. The method includes the specific and main steps: preliminarily oxidizing a carbon nano-tube with acid; oxidizing the carbon nano-tube with strong oxidizers; adding water for hydrolysis; adding hydrogen peroxide for purification; and preparing the graphene band after washing and drying. The acid oxidized flat carbon nano-tube is precisely, directionally and longitudinally cut along the edge of the acid oxidized flat carbon nano-tube, so that the regular and uniform high-quality graphene band is prepared. The method is simple and convenient, is easy to implement and control, and can be used for directional cutting in a wide temperature range and under various oxidization conditions, and preparing the graphene band on a large scale. The prepared graphene band is uniform, regular and narrow, has uniform layers and neat edges, and can be applied to composite materials, conductive and heat conducting materials, sensors, electronic circuits, micro-nano devices and related fields.

Description

technical field [0001] The invention relates to a graphene strip prepared by acid oxidation of flat carbon nanotubes and a preparation method thereof, in particular to the preparation of graphene strip material and its preparation method by directional cutting of flat carbon nanotubes by acid oxidation, which belongs to nanomaterial preparation technology field. Background technique [0002] Graphene ribbons are nanometer-wide graphene materials, typically containing 1 to 10 layers of graphite. Graphene ribbons have a unique two-dimensional layered nanostructure, high strength, high electrical conductivity, high thermal conductivity, and at the same time have semiconductor properties sensitive to one-dimensional nanoribbon structures, for example, narrow graphene ribbons (less than 10nm) Exhibiting semiconducting properties, the broad strips can be transformed into conductors. These excellent structural, mechanical, physical and semiconductor properties of graphene strips ...

AI Technical Summary

Problems solved by technology

At present, it is difficult to form regular graphene strips by the physical and chemical tailoring graphene approach used, and it is also difficult to obtain regular graphene strips by acid oxidation or plasma cutting methods using carbon nanotubes as raw materials, because The carbon nanotubes used are all circular tubes with uniform structure and lack of special defect sites, so it is difficult to cut them into regular graphene strips

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