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Preparation method of 3D-graphene material using biomass resources as carbon source

A technology of biomass resources and graphene, which is applied in the field of preparation of 3D-graphene materials, can solve the problems of complex operation, no patent publications, and high production costs, and achieve good biocompatibility, low cost, and good conductivity rate effect

Active Publication Date: 2019-03-01
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are complicated to operate and expensive to manufacture.
In recent years, the use of biomass as a carbon source to prepare graphene has become a new member of graphene preparation, but there is no related product on the market that uses biomass as a carbon source to prepare three-dimensional graphene. Biomass resources as carbon source for 3D-graphene are very necessary
[0004] Through the search, no patent publications related to the patent application of the present invention have been found

Method used

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  • Preparation method of 3D-graphene material using biomass resources as carbon source
  • Preparation method of 3D-graphene material using biomass resources as carbon source
  • Preparation method of 3D-graphene material using biomass resources as carbon source

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A method for preparing a 3D-graphene material using protein as a carbon source, the steps are as follows:

[0034] (1) Dissolve bovine serum albumin in an aqueous solution, stir at 20°C to dissolve it, add sodium sulfate, continue stirring until it forms a uniform solution, titrate the above liquid into ethanol with a syringe pump (titration speed 200ul / min), and obtain White solid, dried in a vacuum oven at 80°C to 120°C for 4 to 12 hours to obtain a mixture of bovine serum albumin and salt;

[0035] Wherein, the mass ratio of described bovine serum albumin and salt is 1:3;

[0036] (2) Put the mixture of protein and salt in step (1) into a tube furnace for carbonization, disperse the carbonized sample in water, and filter to obtain a black solid, which is a 3D-graphene material.

[0037] The heating program is as follows: from room temperature to 300°C at 2°C / min and maintained for 2 hours, then raised to 500°C at 3°C / min and maintained for 1 hour.

Embodiment 2

[0039] A kind of preparation method using glycine as the 3D-graphene material of carbon source, the steps are as follows:

[0040] (1) Dissolve glycine in the aqueous solution, stir to dissolve at 20°C, add potassium chloride, continue to stir until it forms a uniform solution, titrate the above liquid into isopropanol with a syringe pump (titration speed 300ul / min), Obtain a white solid, and dry it in a vacuum oven at 80°C to 120°C for 4 to 12 hours to obtain a mixture of glycine and salt;

[0041] Wherein, the mass ratio of described glycine and salt is 1:5;

[0042] (2) Put the mixture of glycine and salt in step (1) into a tube furnace for carbonization, disperse the carbonized sample in water, and filter to obtain a black solid, which is a 3D-graphene material.

[0043] The heating program is as follows: from room temperature to 200°C at 3°C / min and maintained for 1-2 hours, then raised to 600°C at 1°C / min and maintained for 1-2 hours.

Embodiment 3

[0045] A kind of preparation method using glutamic acid as carbon source 3D-graphene material, the steps are as follows:

[0046] ⑴Dissolve glutamic acid in aqueous solution, stir at room temperature (25°C) to dissolve, add copper sulfate, continue stirring until it forms a uniform solution, titrate the above liquid into isopropanol with a syringe pump (titration speed 500ul / min) to obtain a white solid, which was dried in a vacuum oven at 80°C to 120°C for 4 to 12 hours to obtain a mixture of glutamic acid and salt;

[0047] Wherein, the mass ratio of glutamic acid and salt is 1:8;

[0048] (2) Put the mixture of glutamic acid and salt in step (1) into a tube furnace for carbonization, disperse the carbonized sample in water, and filter to obtain a black solid, which is a 3D-graphene material.

[0049] The heating program is as follows: from room temperature to 350°C at 2°C / min and maintained for 1-2 hours, then raised to 700°C at 3°C / min and maintained for 1-2 hours.

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Abstract

The invention relates to a preparation method of a 3D-graphene material using biomass resources as a carbon source. The preparation method includes following steps: (1), dissolving biomass in a watersolution, stirring to enable the biomass to be dissolved, adding water-soluble inorganic salt, continuing stirring until a uniform solution is formed, titrating above liquid into an organic solvent toobtain white solid, and drying in a vacuum drying box to obtain a mixture of biomass and salt; (2), putting the mixture into a tubular furnace for carbonizing, dispersing a carbonized sample in water, and filtering to obtain black solid to obtain the 3D-graphene material. The 3D-graphene material prepared by the method is high in water solubility, large in specific surface area and high in electroconductivity; lamellar thickness of the material is uniform and is about 1-2nm, and the material has high adsorption on pollutants in dye wastewater and organic dye methyl purple or methylene blue, has high absorbability on near infrared light and can convert the same into heat energy.

Description

technical field [0001] The invention belongs to the technical field of preparation of functionalized materials, in particular to a method for preparing a 3D-graphene material using biomass resources as a carbon source. Background technique [0002] Graphene is a honeycomb-like 2D planar carbon material composed of sp2 hybridized carbon. It is widely used because of its good physical or chemical properties, such as high electrical conductivity, good flexibility, large specific surface area and near-infrared photothermal conversion. Used in batteries, water purification and other fields. 3D graphene refers to the interconnection of graphene sheets into a three-dimensional network structure. This three-dimensional structure solves the stacking between single sheets of graphene and produces a large number of multi-level channels, which is very conducive to mass transfer, adsorption and loading. . [0003] Currently, there are various methods for preparing 3D graphene, includin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184B01J20/20B01J20/30C02F1/28C02F101/34C02F101/36C02F101/38
CPCB01J20/20C01B32/184C02F1/281C02F2101/34C02F2101/36C02F2101/38Y02A20/212
Inventor 邓启良谢江洋李燕丽
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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