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Method for reusing industrial waste carbon materials

A carbon material and industrial technology, which is applied in the field of recycling industrial waste carbon materials, can solve the problems of difficult treatment of industrial waste carbon materials, environmental pollution, etc., and achieves the effects of reducing preparation cost, wide selection range and low finished product.

Inactive Publication Date: 2019-12-10
HANGZHOU GAOXI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the current industrial waste carbon materials are difficult to treat and will cause pollution to the environment, and at the same time provide a solution for the low-cost and efficient preparation of graphene and its carbon dots, and provide a reuse of industrial waste carbon materials method

Method used

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  • Method for reusing industrial waste carbon materials

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Select polyimide industrial waste, calculate C r The value is 3.52, which meets the requirements for preparing graphene carbon dots, so the material is made into an electrode, and 0.2mol / L ammonia water is used as the electrolyte, and the electrolysis is performed at a voltage of 20V for 2 hours.

[0020] After the above steps, the obtained graphene carbon dot solution was filtered, and after removing a small amount of filter residue and large sheets of graphene, the yield of the graphene carbon point was calculated to be 98%, and the specific parameters were as shown in Table 1. figure 1 The TEM image of the graphene carbon dots prepared by this method is shown, and the size of the carbon dots is between 3-6nm, which conforms to the definition of carbon dots (below 100nm). At the same time, the carbon dots exhibit a very good lattice structure with a lattice spacing of 0.21 nm.

Embodiment 2

[0022] Select polyimide industrial waste, calculate C r The value is 2.52, which meets the requirements for the preparation of graphene carbon dots, so the material is made into an electrode, and 0.2mol / L ammonia water is used as the electrolyte, and the electrolysis is performed at a voltage of 20V for 2 hours.

[0023] After the above steps, the obtained graphene carbon dot solution was filtered, and after removing a small amount of filter residue and large sheets of graphene, the yield of the graphene carbon dot was calculated to be 62%. The specific parameters are shown in Table 1.

Embodiment 3

[0025] Select polyimide industrial waste, calculate C r The value is 3.52, which meets the requirements for preparing graphene carbon dots, so the material is made into an electrode, and 0.1mol / L sulfuric acid is used as the electrolyte, and the electrolysis is performed at a voltage of 5V for 2 hours.

[0026] After the above steps, the obtained graphene carbon dot solution was filtered, and after removing a small amount of filter residue and large sheets of graphene, the yield of the graphene carbon dot was calculated to be 63%. The specific parameters are shown in Table 1.

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Abstract

The invention discloses a method for reusing industrial waste carbon materials, belonging to the technical field of nano materials. The method calculates the Cr value of the industrial waste carbon materials: the ratio of sp2 carbon content and sp3 carbon content of the industrial waste carbon materials under the C1s spectrum of XPS; according to different Cr values, graphene carbon dots or graphene are prepared by electrochemical electrolysis of industrial waste carbon materials. The method solves the problems that the current industrial waste carbon material is difficult to treat and will bring pollution to the environment, at that same time, a solution is provided for preparing graphene and its carbon dot with low cost and high efficiency. Using green electrochemical methods, industrialwaste carbon materials, such as polyimide, polyacrylonitrile, asphalt, etc., can obtain a double continuous structure with sp2 and sp3 carbon phases after simple heat treatment, which can significantly improve the preparation efficiency of graphene carbon spots and graphene.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a method for reusing industrial waste carbon materials. Background technique [0002] Carbon materials have gradually become an indispensable material in life. Equipment such as airplanes, fishing rods, rackets, tripods, mobile phones, and computers all need to use carbon materials to conduct electricity and heat or enhance their mechanical behavior. To meet these demands, carbon materials are being prepared in large quantities. However, during the preparation of carbon materials, due to the production process and yield, about 10% of the carbon materials will be wasted, and most of these waste carbon materials will be landfilled. And as carbon material products come into life, people enjoy the convenience brought by carbon materials, and at the same time, a large number of carbon material waste products are produced every year. These waste carbon materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/00
CPCC25B1/00
Inventor 高超黄昊光彭蠡
Owner HANGZHOU GAOXI TECH CO LTD
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