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Preparation method of graphene inorganic nanocomposite

A composite material and inorganic nanotechnology, applied in the field of functional material chemistry and nanomaterials, can solve problems such as difficult to achieve large-scale preparation, high reaction conditions, and multiple processing steps, and achieve short reaction time, simple process flow, and high surface area Effect

Inactive Publication Date: 2010-07-14
XIANGTAN UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This type of method generally requires more processing steps, has higher requirements on reaction conditions, and is difficult to achieve large-scale preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Preparation of graphite oxide. Take 1.5g of flake graphite powder, 1.5g of sodium nitrate, and 70ml of concentrated sulfuric acid, add them to the there-necked flask in turn, stir evenly under ice bath conditions, slowly add 9g of potassium permanganate, then warm up to room temperature for 2 hours, then add 100ml of distilled water, Then the temperature was raised to 90° C. for 1 h. Then add 300ml of distilled water and 10ml of 30% H to the reaction system 2 o 2 . Then the above solution was centrifuged several times, washed several times with dilute hydrochloric acid, distilled water and absolute ethanol successively, and the product was dried at 80°C to obtain graphite oxide.

[0022] 2. Preparation of graphene. Take 10mg of graphite oxide and disperse it in 50ml of distilled water, and ultrasonically strip it to obtain an aqueous solution of graphene oxide, add 10ml of 30% hydration trap, react at room temperature for 24h, then raise the temperature to 100°C ...

Embodiment 2

[0025] 1, the preparation of graphite oxide and graphene is identical with embodiment 1.

[0026] 2. Weigh the zinc sulfate solid and dissolve it in distilled water to form a 0.2mol / L solution. Take 100ml of the solution, then add 15mg of graphene, ultrasonicate for 30 minutes, and slowly add 0.3mol / L of The oxalic acid solution was used as a precipitating agent until no new precipitation was produced. The mixed solution was centrifuged at high speed and washed several times with distilled water. The obtained product was first dried at 80°C for 10 hours, and then heat-treated at 500°C for 2 hours to obtain graphene / ZnO inorganic nanocomposites. .

Embodiment 3

[0028] 1, the preparation of graphite oxide and graphene is identical with embodiment 1.

[0029] 2. Weigh cerium nitrate solid and dissolve it in distilled water to form a 0.3mol / L solution. Take 150ml of the solution, then add 10mg of graphene, ultrasonicate for 30 minutes, and slowly add 0.3mol / L of The oxalic acid solution was used as a precipitant until no new precipitation was produced. The mixture was centrifuged at high speed and washed several times with distilled water. The obtained product was first dried at 80°C for 10h, and then heat-treated at 600°C for 2h to obtain graphene / CeO 2 Inorganic Nanocomposites.

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Abstract

The invention discloses a preparation method of a graphene inorganic nanocomposite, which comprises the following steps: firstly, adding grapheme into the aqueous solution of soluble inorganic salt, and scattering the grapheme by ultrasound; then adding precipitant under the mixing condition, centrifuging at a high speed and heat treating the obtained mixed liquor, and finally obtaining the graphene inorganic nanocomposite. The composite has high surface area, adjustable diameter of nano particles, and important application value on catalysis, stored energy, drug delivery and the like.

Description

technical field [0001] The invention relates to a method for preparing a graphene inorganic nanocomposite material by using graphene as a raw material in a one-step direct method, belonging to the technical fields of nanomaterials and functional material chemistry. Background technique [0002] Graphene is a single-layer carbon atomic surface material exfoliated from graphite material, which is a two-dimensional structure of carbon. This thin film of graphite crystals is only 0.335 nanometers thick. Graphene, like graphite, belongs to the compound hexagonal lattice, and each carbon atom in the two-dimensional plane is sp 2 The hybrid orbitals are connected, that is, three σ bonds are formed between each carbon atom and the three nearest neighbors. The remaining p-electron orbit is perpendicular to the graphene plane, forming π bonds with surrounding atoms, and the carbon atoms surround each other to form a regular hexagonal planar honeycomb structure. Graphene has excelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01G9/02C01F17/00B82B3/00
Inventor 张平丁燕怀姜勇许福杨忠美任虎鸣卓琴
Owner XIANGTAN UNIV
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