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Preparation method of iron oxyhydroxide/graphene oxide composite material

An iron oxyhydroxide and composite material technology, applied in the directions of iron oxide/iron hydroxide, iron oxide, graphene, etc., can solve problems such as affecting the excellent properties of nanomaterials, and achieve low production cost, simple operation process, and low equipment investment. Effect

Inactive Publication Date: 2013-07-31
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the coating of the surfactant affects the excellent properties of the nanomaterial itself

Method used

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  • Preparation method of iron oxyhydroxide/graphene oxide composite material
  • Preparation method of iron oxyhydroxide/graphene oxide composite material
  • Preparation method of iron oxyhydroxide/graphene oxide composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A preparation method of iron oxyhydroxide / graphene oxide composite material, comprising the following steps:

[0035] (1) Add 1g of graphite powder with flake structure and 1g of sodium nitrate into 80g of concentrated sulfuric acid with a mass fraction of 98%, and stir for 0.5h at 5°C;

[0036] (2) Add 8g of potassium permanganate to the solution, heat up to 35°C and stir for 2h;

[0037] (3) Slowly add 80ml of deionized water to the solution, heat up to 90°C and stir for 1 hour;

[0038] (4) Add 200ml deionized water again, and add 30% hydrogen peroxide dropwise until the color of the solution changes from dark brown to bright yellow;

[0039] (5) The product was washed three times with hydrochloric acid and deionized water with a mass fraction of 5%, and vacuum-dried after centrifugation to obtain graphene oxide powder;

[0040] (6) Prepare a graphene oxide aqueous solution with a concentration of 1 g / L;

[0041] (7) Add 100ml of saturated ferrous chloride aqueous...

Embodiment 2

[0047] A preparation method of iron oxyhydroxide / graphene oxide composite material, comprising the following steps:

[0048] (1) Add 1g of graphite powder with flake structure and 0.5g of sodium nitrate to 75g of concentrated sulfuric acid with a mass fraction of 98%, and stir at 1°C for 1h;

[0049] (2) Add 5g of potassium permanganate to the solution, heat up to 35°C and stir for 3h;

[0050] (3) Slowly add 90ml of deionized water to the solution, raise the temperature to 90°C and stir for 1 hour;

[0051] (4) Add 210ml of deionized water again, and add 30% hydrogen peroxide dropwise until the color of the solution changes from dark brown to bright yellow;

[0052] (5) The product was washed three times with hydrochloric acid and deionized water with a mass fraction of 5%, and vacuum-dried after centrifugation to obtain graphene oxide powder;

[0053] (6) Prepare a graphene oxide aqueous solution with a concentration of 0.1 g / L;

[0054] (7) Add 100ml of saturated ferrous...

Embodiment 3

[0059] A preparation method of iron oxyhydroxide / graphene oxide composite material, comprising the following steps:

[0060] (1) Add 1g of graphite powder with flake structure and 2g of sodium nitrate into 100g of concentrated sulfuric acid with a mass fraction of 98%, and stir at 4°C for 0.5h;

[0061] (2) Add 10g of potassium permanganate to the solution, heat up to 35°C and stir for 1.5h;

[0062] (3) Slowly add 75ml of deionized water to the solution, raise the temperature to 90°C and stir for 2 hours;

[0063] (4) Add 200ml deionized water again, and add 30% hydrogen peroxide dropwise until the color of the solution changes from dark brown to bright yellow;

[0064] (5) The product was washed three times with hydrochloric acid and deionized water with a mass fraction of 5%, and vacuum-dried after centrifugation to obtain graphene oxide powder;

[0065] (6) Prepare a graphene oxide aqueous solution with a concentration of 0.3g / L;

[0066] (7) Add 100ml of saturated ferric...

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Abstract

The invention relates to a preparation method of iron oxyhydroxide / graphene oxide composites. The method uses an improved Hummers method to regulate a proportion of a saturated ferric salt aqueous solution for preparing a precursor sol with boiling water, and a concentration of a graphene oxide aqueous solution, thereby preparing the iron oxyhydroxide / graphene oxide composite material with monodisperse nanoparticles and a size of less than 10 nanometer, and without a surfactant. The iron oxyhydroxide / graphene oxide composite material prepared by the method has characteristics of small particle size of the iron oxyhydroxide, monodispersed iron oxyhydroxide on surfaces of the graphene oxide, and large specific surface area; and the method is low in equipment investment, few in synthesis steps, simple in operation technology, low in production cost, easy to realize industrial production and wide in application prospect.

Description

technical field [0001] The invention relates to a method for preparing an iron oxyhydroxide / graphene oxide composite material, belonging to the field of nanocomposite materials. [0002] Background technique [0003] Ferric oxyhydroxide is a functional material mainly used in the field of environmental protection and industrial production. In environmental protection, it can be used to remove sulfur in the air and to adsorb heavy metals in industrial wastewater. It can be used as a catalyst and pigment in industrial production. etc., the application prospect is very broad. With the development of nanomaterials and nanotechnology, it has been fully proved that materials will exhibit more excellent and special properties at the nanoscale. How to apply the excellent characteristics of nanomaterials to practice is a difficult problem. Due to their small size, nanomaterials have larger specific surfaces and higher surface energies, which lead to their excellent and special pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06C01B31/04B82Y30/00C01B32/184
Inventor 彭夫敏罗涛
Owner ANHUI UNIVERSITY
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