Preparation method of graphene oxide/nano-gold particulate composite material with mono-atomic thickness

A technology of graphene oxide and nano-gold particles, which is applied in the direction of chemical instruments and methods, nanotechnology, and other chemical processes, can solve the problems of inability to realize industrial production and cumbersome methods, and achieve low preparation costs, easy chemical modification, The effect of high mechanical strength

Inactive Publication Date: 2011-09-28
PLA AIR FORCE OIL MATERIAL RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] An object of the present invention is to provide a simple and efficient single-atom-thick graphene oxide / nano-gold particle composite material method for solving the above-mentioned prior art. Alkene oxide / nano-gold particle composite material preparation method

Method used

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  • Preparation method of graphene oxide/nano-gold particulate composite material with mono-atomic thickness
  • Preparation method of graphene oxide/nano-gold particulate composite material with mono-atomic thickness
  • Preparation method of graphene oxide/nano-gold particulate composite material with mono-atomic thickness

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as the preparation process flow figure 1 Said, at first oxidation of acidified expandable graphite is carried out through the following steps: 1. 100ml strong concentrated sulfuric acid is added in the flask, and the magnetic rotor is placed in the flask. The flask was ice bathed. 2 The concentrated acid was stirred and then cooled in an ice bath for 15 minutes, then 20 g of acidified expandable graphite was added to the concentrated acid and stirred at high speed. 3. Add 15g of potassium permanganate powder with a certain particle size within 1 hour. The adding process needs to be slow to avoid violent temperature rise. Control the adding speed and keep the liquid temperature in the beaker not exceeding 3°C. 4 After the addition of potassium permanganate is complete, remove the ice bath. 5 Slowly add 400ml of deionized water, heat the solution, and raise the temperature of the solution to 100°C. Keep it for 0.5-2h. 6 Remove the water bath, stir the reactant, a...

Embodiment 2

[0040] Such as the preparation process flow figure 1 Described, at first acidified expandable graphite is oxidized, is to carry out by following steps: 1, the mixed acid of 50ml strong concentrated sulfuric acid and concentrated nitric acid 1: 1 ratio is joined in the flask, and magnetic rotor is placed in the flask. The flask was ice bathed. 2 The concentrated acid was stirred and then cooled in an ice bath for 15 minutes, then 15 g of acidified expandable graphite was added to the concentrated acid and stirred at high speed. 3 Slowly add 12g of potassium permanganate powder with a certain particle size within 45 minutes to avoid violent temperature rise, control the adding speed, and keep the liquid temperature in the beaker not exceeding 3°C. 4 After the addition of potassium permanganate is complete, remove the ice bath. 5 Slowly add 400ml of deionized water, heat the solution, and raise the temperature of the solution to 100°C. Keep for 1h. 6 Remove the water bath, st...

Embodiment 3

[0047] (1) Graphene carries out acylation reaction: add solvent in graphene oxide, then add reaction reagent, under the condition of protective nitrogen, adjust reaction temperature to be 50-85 degrees Celsius, stir, use oil bath to carry out reflux, reflux time For 1-24h, after reflux, carry out vacuum distillation treatment;

[0048] (2) The THF solution of chloroauric acid is added in the functionalized solution of the above-mentioned monoatomic sheet-layer graphene oxide, then carry out stirring reaction, and the temperature is 50-65 degrees Celsius;

[0049] (3) Adjust the pH value to obtain a mixture solution precipitation, which is filtered to obtain a graphene oxide / gold nanoparticle composite material.

[0050] The reactants used and proportioning are the same as in Example 2.

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Abstract

The invention relates to the field of graphene preparation, and discloses a preparation method of graphene oxide/nano-gold particulate composite material with mono-atomic thickness. In prior arts, the preparation of mono-atomic thickness graphene oxide/nano-gold particulate composite material is complicated, requires special equipment, and cannot be prepared with industrialized production. The present invention assists in solving the problems, and provides a simple method for preparing the composite material with high efficiency. The preparation method comprises the steps that: (1) obtained graphene oxide is subject to an acylation reaction; (2) graphene oxide processed through the acylation reaction is subject to a reaction with a chlorauric acid solution; (3) the pH value of the material is regulated, the depositions are filtered, such that the graphene oxide/nano-gold particulate composite material is obtained. The method of the present invention has advantages of simple technology, high yield, large output, good product quality, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to the field of graphene preparation, and relates to a method for preparing a single-atom-thick graphene oxide / nano-gold particle composite material. Background technique [0002] Graphene has received extensive attention in the fields of physics and chemistry since it was discovered by the University of Manchester in 2004 that it has excellent physical properties. Graphene, as a honeycomb network structure of single-layer carbon atoms, can be considered to widely exist in many carbon-based materials. For example, graphite can be regarded as the stacking of graphene sheets. Although these graphene sheets in graphite are stacked together by weak intermolecular forces, which makes it easy to move between layers, but these large quantities The weak intermolecular force makes it difficult to completely separate each other to obtain graphene sheets. Since 2004, researchers K.S.Novoselov, A.K.Geim, and S.V.Morozov from the School of P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00B82Y40/00
Inventor 刘建华赵升红朱春婷于美刘鹏瑞张冬梅安军伟李松梅黄毅
Owner PLA AIR FORCE OIL MATERIAL RES INST
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