Preparation method of magnetic graphene based oil absorption foam material

A magnetic graphene and graphene-based technology, applied in chemical instruments and methods, and other chemical processes, can solve the problems of easy collapse, high price, and complicated operation, and achieve the effect of stable structure and convenient operation

Active Publication Date: 2013-12-11
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the preparation methods of three-dimensional graphene materials are mainly based on graphene oxide as a precursor, and the solvothermal method is used to superimpose porous graphene by using the π-π bonds of graphene itself. The three-dimensional graphene structure is relatively fragile, easy to collapse, and poor in reusability (Cong,

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  • Preparation method of magnetic graphene based oil absorption foam material
  • Preparation method of magnetic graphene based oil absorption foam material
  • Preparation method of magnetic graphene based oil absorption foam material

Examples

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Example Embodiment

[0024] Example 1

[0025] Using natural flake graphite as raw material, the modified Hummers method is used for oxidation, and then the graphite oxide is peeled off by the ultrasonic method to obtain graphene oxide. The specific steps are:

[0026] In a round-bottom flask, add 50 mL of concentrated sulfuric acid and heat to a temperature of 80 ℃, add 10 g of potassium persulfate and 10 g of phosphorus pentoxide, then slowly add 10 g of natural flake graphite, stir evenly, at a temperature of 80-90 ℃ After keeping for 4 hours, cool to room temperature, dilute with deionized water, then vacuum filter, wash, and dry to obtain pre-oxidized graphite powder;

[0027] Add 230 mL of concentrated sulfuric acid and 5 g of the obtained pre-oxidized graphite powder to the beaker, then add 30 g of potassium permanganate to the beaker in batches, and then keep it in a water bath at 38°C for 2 hours, dilute with deionized water, and stir. Add 50 mL of 30% hydrogen peroxide to obtain a bright yello...

Example Embodiment

[0031] Example 2

[0032] Using natural graphite powder as raw material, the modified Hummers method is used for oxidation, and then the graphite oxide is peeled off by the ultrasonic method to obtain graphene oxide. The specific steps are as follows:

[0033] In a round bottom flask, add 50 mL of concentrated sulfuric acid and heat it to a temperature of 85°C. Add 10g of potassium persulfate and 10g of phosphorus pentoxide, then slowly add 10g of natural graphite powder, stir well, and keep at the temperature of 80-90°C. After 4 hours, cool to room temperature, dilute with deionized water, then vacuum filter, wash, and dry to obtain pre-oxidized graphite powder;

[0034] Add 230 mL of concentrated sulfuric acid and 5 g of the obtained pre-oxidized graphite powder to the beaker, then add 30 g of potassium permanganate to the beaker in batches, and then keep it in a water bath at 38°C for 2 hours, dilute with deionized water, and stir. Add 50 mL of 30% hydrogen peroxide to obtain a b...

Example Embodiment

[0038] Example 3

[0039] Using natural graphite powder as raw material, the modified Hummers method is used for oxidation, and then the graphite oxide is peeled off by the ultrasonic method to obtain graphene oxide. The specific steps are as follows:

[0040] In a round-bottom flask, add 50 mL of concentrated sulfuric acid and heat to a temperature of 90°C, then add 10g of potassium persulfate and 10g of phosphorus pentoxide, then slowly add 10g of natural graphite powder, stir evenly, and keep the temperature at 80-90°C After 4 hours, cool to room temperature, dilute with deionized water, then vacuum filter, wash, and dry to obtain pre-oxidized graphite powder;

[0041] Add 230 mL of concentrated sulfuric acid and 5 g of the obtained pre-oxidized graphite powder to the beaker, then add 30 g of potassium permanganate to the beaker in batches, and then keep it in a water bath at 38°C for 2 hours, dilute with deionized water, and stir. Add 50 mL of 30% hydrogen peroxide to obtain a b...

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Abstract

The invention discloses a preparation method of a magnetic graphene based oil absorption foam material. The preparation method comprises the following steps of peeling graphite by utilizing an improved Hummers method to obtain graphite oxide; carrying out ultrasonic dispersion on the graphite oxide to obtain a graphene oxide water solution; adding a carbon nano tube into the solution, and carrying out suction filtration to form a film; carrying out hydrothermal reduction to obtain the graphene based foam material; supporting ferric oxide on the surface of the graphene based foam material which is used as carrier through a chemical method so as to prepare the magnetic graphene based oil absorption foam composite material. The magnetic graphene based foamed composite material obtained by utilizing the method provided by the invention has good adsorptive property on the oil and an organic solvent, meanwhile, the structure is stable, a magnetic separation method is adopted to realize the reuse of the material, and the preparation method establishes the foundation for the application of the graphene based foam material on the oil water separation field.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of environmental functional materials, and in particular relates to a method for preparing a magnetic graphene-based oil-absorbing foam material. Background technique [0002] Graphene, that is, single-layer graphite, is made of sp 2 A new type of carbon material with a two-dimensional honeycomb structure of monomolecular layer thickness composed of hybridized carbon atoms connected to each other. Due to its special structure, graphene has many special physical properties and extraordinary electrical, thermal, optical and mechanical properties, and has great application prospects in the fields of nanoelectronic devices, composite materials, energy storage, catalysis, and sensing. . [0003] Materials prepared with graphene as the basic structural unit (such as graphene airgel, graphene sponge, etc.) have the characteristics of porous, large specific surface area, etc., showin...

Claims

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Application Information

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IPC IPC(8): B01J20/20
Inventor 杨苏东马鹏程陈琳王传义
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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