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Oil-soluble Fe3O4/modified graphene oxide composite material, and preparation method and application thereof

A technology of ferric tetroxide and composite materials, applied in the field of materials, can solve problems such as difficulty in dispersion, and achieve the effect of broad application prospects

Active Publication Date: 2018-09-28
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with graphene, it has more abundant oxygen-containing groups such as hydroxyl groups and carboxyl groups on the surface, so graphene oxide has good water solubility, but it is difficult to disperse in low-level organic solvents

Method used

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  • Oil-soluble Fe3O4/modified graphene oxide composite material, and preparation method and application thereof
  • Oil-soluble Fe3O4/modified graphene oxide composite material, and preparation method and application thereof
  • Oil-soluble Fe3O4/modified graphene oxide composite material, and preparation method and application thereof

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preparation example Construction

[0030] The invention provides a kind of preparation method of oil-soluble iron ferric oxide / modified graphene oxide composite material, comprises the following steps:

[0031] A) under alkaline conditions, the aqueous solution of graphene oxide and containing Fe 3+ and Fe 2+ After the aqueous solution is mixed, carry out heating reaction, obtain ferric oxide / graphene oxide composite material;

[0032] B) The ferric oxide / graphene oxide composite material is mixed with alkylamine to obtain oil-soluble ferric oxide / modified graphene oxide composite material, and the alkylamine is selected from laurylamine, deca Triamine, tetradecylamine, hexadecylamine, octadecylamine or diisotridecylamine.

[0033] The present invention configures the aqueous solution of graphene oxide and contains Fe 3+ and Fe 2+ of aqueous solution. Wherein, the configuration method of the aqueous solution of the graphene oxide is:

[0034] The graphene oxide is mixed with deionized water and ultrasonic...

Embodiment 1

[0066] In this example, Fe 3+ , Fe 2+ Co-precipitate with graphene oxide to obtain water-soluble ferric oxide / graphite oxide, and then self-assemble with ferric oxide / graphite oxide and alkylamine to prepare oil-soluble ferric oxide / modified graphene oxide composite Material. Specific steps are as follows:

[0067] Under the condition of ice bath, 4g of sodium nitrate and 4g of graphite powder were added to 140mL of 98% concentrated sulfuric acid. Slowly add 24 g of potassium permanganate under magnetic stirring. The mixture was reacted overnight at room temperature, raised to 35°C for 35 minutes, then raised to 80°C and kept for 10 minutes. The mixture was slowly oxidized and turned bright yellow. The temperature was lowered to 60°C, and 400 mL of deionized water was slowly added to keep the reaction temperature not exceeding 100°C. The mixture was centrifuged at 5000r / min, washed several times with 5% hydrochloric acid, and finally washed with ultrapure water to remove...

Embodiment 2

[0076] The preparation method of this embodiment is the same as that of Example 1, except that FeCl 3 ·6H 2 O and FeCl 2 4H 2 The consumption of O is respectively 1g and 2.0g, and the ferric oxide content is higher in the sample that example 2 prepares, and the composite material that obtains is similar to the result of embodiment 1, promptly has good external magnetic field responsiveness, in liquid paraffin Stable dispersion performance and good thermal conductivity.

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Abstract

The invention provides a preparation method of an oil-soluble Fe3O4 / modified graphene oxide composite material. The method includes steps of: a) under alkaline condition, mixing a graphene oxide watersolution and a water solution containing Fe<3+> and Fe<2+>, and performing a heating reaction to obtain a Fe3O4 / modified graphene oxide composite material; B) performing a mixing reaction to the Fe3O4 / modified graphene oxide composite material with alkyl amine to obtain the oil-soluble Fe3O4 / modified graphene oxide composite material, wherein the alkyl amine is selected from lauryl amine, tridecylamine, tetradecylamine, cetylamine, octadecylamine, or diisotridecylamine. In the invention, firstly, through chemical coprecipitation to the Fe<3+> and Fe<2+> and graphene oxide, water-soluble Fe3O4 / graphene oxide is obtained; then through self-assembling to the Fe3O4 / modified graphene oxide with specific alkyl amine, the oil-soluble Fe3O4 / modified graphene oxide composite material is produced.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to an oil-soluble ferric oxide / modified graphene oxide composite material, a preparation method and application thereof. Background technique [0002] Ferric oxide (Fe 3 o 4 ) is a mixed valence state (Fe Ⅱ / Fe Ⅲ ) oxides, composed of Fe 2+ , Fe 3+ and O 2- Complex ionic crystals composed of ionic bonds, due to its special trans-spinel structure, electrons can jump back and forth between these two ions, so that ferroferric oxide has high electrical conductivity and strong magnetic properties, so it is used in electrochemical technology , absorbing electromagnetic waves and magnetic fluids and other fields have a wide range of applications. [0003] Graphene is a carbon atom with sp 2 Composed of hybrid orbitals, it is a two-dimensional planar structure material with a honeycomb regular hexagonal lattice. The mobility of its carrier ions is as high as 15000cm ...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 王长宏范贤波梁璐
Owner GUANGDONG UNIV OF TECH
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