Preparation method for graphene qxide

A graphene oxide and graphite oxide technology, which is applied to the preparation of graphene oxide with a thickness of a single atom or several atoms, and the field of graphene oxide preparation, which can solve the cumbersome method of graphene oxide and the inability to realize industrial production, etc. problem, to achieve the effect of good chemical activity, high yield and easy cost.

Inactive Publication Date: 2011-09-28
PLA AIR FORCE OIL MATERIAL RES INST +1
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  • Claims
  • Application Information

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Problems solved by technology

[0005] An object of the present invention is to provide a simple and efficient method for preparing graphene oxide to solve the problems o

Method used

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  • Preparation method for graphene qxide
  • Preparation method for graphene qxide
  • Preparation method for graphene qxide

Examples

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Example Embodiment

[0035] Example 1

[0036] Firstly, the commercially available acidic expandable graphite is oxidized by the following steps: 200ml of concentrated sulfuric acid and 2g of sodium nitrate are added to the flask with the magnetic rotor, and the flask is placed in an ice bath. The concentrated acid is stirred and then cooled in an ice bath for 15 minutes, and then 20 g of commercially available acidic expandable graphite is added to the concentrated acid and stirred evenly. Add 30g of potassium permanganate powder in 40min. The adding process needs to be slow. The adding speed should be controlled to avoid violent heating and keep the liquid temperature in the beaker not exceeding 5℃. After the potassium permanganate is added, the ice bath is removed. Slowly add 500ml of deionized water, and then heat the solution to raise the temperature of the solution to 100°C and keep it for 0.5-2h. The water bath was removed, the reaction was stirred, and the reaction was allowed to proceed at...

Example Embodiment

[0043] Example 2 According to the method of Example 1, except that the strong acid is 180ml concentrated nitric acid, the same results as figure 2 As shown in the results, the yield can reach 179.5 %.

Example Embodiment

[0044] Example 3 According to the method of Example 1, except that the strong acid is 150ml perchloric acid, the same as figure 2 As shown in the results, the yield can reach 179.8%.

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Abstract

The invention belongs to the preparation field of grapheme, and relates to a preparation method for a graphene qxide. More specifically, the invention relates to a preparation method for a graphene qxide having a thickness of monatomic or a plurality of atoms. The preparation method comprises the following steps: (1) oxidizing graphite through a strong oxidant; (2) peeling the resulting graphite oxide through supersonic wave; (3) adjusting pH value of the resulting graphene oxide; (4) deionizing the resulting colloidal sol of the graphene oxide; (5) washing and filtering the resulting graphene oxide with monoatomic layer; (6) carrying out a drying and a ball milling for the resulting product from the above steps to obtain a graphene qxide having a thickness of monatomic or a plurality of atoms. In the prior art, the preparation method for the graphene qxide is complicated, special equipment is required, and industrial production of the graphene qxide can not be realized. According to the present invention, problems of the prior art are solved. In addition, the method provided by the present invention has advantages of simple, high efficiency, high energy, and environmental protection, and is applicable for popularization and application.

Description

Technical field [0001] The invention relates to the field of graphene preparation, and is a method for preparing graphene oxide, and more specifically, is a method for preparing graphene oxide with a thickness of one atom or several atoms. Background technique [0002] A two-dimensional carbon material with an atomic thickness is called graphene. Studies have found that when the number of graphite layers is less than 10, the graphite layers exhibit a different electronic structure than ordinary three-dimensional graphite. Therefore, people also refer to graphite materials with less than ten layers as graphene materials. The thinnest material should be graphene with only a single carbon atom layer thickness, also known as single carbon layer graphene. Decomposition of graphene can become zero-dimensional fullerene, curling can form one-dimensional carbon nanotubes, and superposition can form three-dimensional graphite. Therefore, the two-dimensional graphite layer has always be...

Claims

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Application Information

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IPC IPC(8): C01B31/00
Inventor 赵升红刘建华安军伟朱春婷张冬梅于美刘鹏瑞李松梅黄毅
Owner PLA AIR FORCE OIL MATERIAL RES INST
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