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Hydrothermal synthesis method for hollow carbon nanomaterials

A technology of carbon nanomaterials and hydrothermal synthesis, applied in the direction of nanocarbon, nanotechnology, nanotechnology, etc., can solve the problems of cumbersome operation, increase production cost, limit the development and application of carbon materials, etc., achieve simple process, low cost, The effect of uniform shape

Active Publication Date: 2013-03-06
安徽省通源环境节能股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, at present, the synthesis method of hollow carbon nanomaterials mostly adopts the hard template method, which is not only cumbersome to operate, but also has certain requirements for the preparation of the template, and also indirectly increases the production cost, thus greatly limiting the development and production of such carbon materials. application

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  • Hydrothermal synthesis method for hollow carbon nanomaterials
  • Hydrothermal synthesis method for hollow carbon nanomaterials
  • Hydrothermal synthesis method for hollow carbon nanomaterials

Examples

Experimental program
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Effect test

Embodiment 1

[0018] In this embodiment, the preparation steps of hollow carbon nanomaterials are as follows:

[0019] (1) Weigh 0.2 g glucose and 0.14 g SDBS with an electronic balance, add 30 mL H 2 Ultrasonic dispersion in O to form a uniform and transparent solution;

[0020] (2) Pour the above mixed solution into a 100 mL autoclave lined with polytetrafluoroethylene, and react at 180 °C for 6 h;

[0021] (3) After the reaction is completed, the product is taken out from the reaction kettle, and the hollow carbon nanomaterial is prepared through conventional steps such as centrifugation, washing, and drying.

[0022] The prepared samples were characterized for their physical properties, and some of the results are shown in the attached figure 1 shown. The obtained material has a unique hollow hat-like structure with a uniform shape and a particle size of about 200 nm.

Embodiment 2

[0024] The implementation process is the same as in Example 1 except for the following differences.

[0025] (1) Weigh 0.15 g of glucose and 0.04 g of nonionic tri-block copolymer (P123) with an electronic balance, add 25 mL of H 2 Ultrasonic dispersion in O to form a uniform and transparent solution;

[0026] (2) The above mixed solution was poured into a 100 mL autoclave lined with polytetrafluoroethylene, and reacted at 170 °C for 8 h.

[0027] The experimental results are completely different from those in Example 1. The obtained hollow carbon nanomaterials have a particle size of about 1 μm and a shape of a deflated balloon.

Embodiment 3

[0029] The implementation process is the same as in Example 1 except for the following differences.

[0030] (1) Weigh 0.85 g sucrose and 0.35 g SDBS with an electronic balance, add 75 mL H 2 Ultrasonic dispersion in O to form a uniform and transparent solution;

[0031] The results obtained are completely different from those in Example 1, except that the hollow carbon nanomaterial obtained in this example is a complete hollow sphere structure, and its particle size is about 200-300 nm.

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Abstract

The invention relates to a hydrothermal synthesis method for hollow carbon nanomaterials. According to the method, glucose is taken as a carbon source, sodium dodecyl benzene sulfonate (SDBS) is taken as a surfactant; the hollow carbon nanomaterials with a unique structure are obtained by using the simple hydrothermal synthesis method, such as a cap shape and a flat balloon shape, wherein the surfactant (SDBS) can also be a nonionic triblock copolymer P123((EO)20(PO)70(EO)20), F127((EO)106(PO)70(EO) 106); and the carbon nanomaterials with the same shape can be obtained. The hydrothermal synthesis method has the advantages of simple process, low consumption, environmental friendliness and high repeatability. A grain size of the obtained hollow carbon nanomaterials is 200nm or 1 micron, and monodispersity is high. Therefore, the hollow carbon nanomaterials have potential excellent electrochemical performance, the hollow carbon nanomaterials provided by the invention have a potential application prospect in the fields, such as catalysis, energy and biomedicine.

Description

technical field [0001] The invention relates to a hydrothermal synthesis method of a hollow carbon nanometer material, belonging to the fields of material preparation and electrochemistry. Background technique [0002] In recent years, carbon nanomaterials have attracted widespread attention due to their unique electrical, optical, mechanical, and biological characteristics, and have been widely used in catalysis, adsorption, energy, and biomedicine. At present, new carbon materials with different shapes and structures are being discovered continuously, such as carbon fibers, fullerenes, carbon nanotubes, ordered mesoporous carbons and porous carbons, etc., thus providing a broader field for further application research. space. At present, there are three main methods for the preparation of carbon nanomaterials: arc discharge method, vapor deposition method and hydrothermal synthesis method. However, the arc discharge method is cumbersome to operate and requires high equip...

Claims

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Application Information

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IPC IPC(8): C01B31/08B82Y30/00B82Y40/00C01B32/15
Inventor 张海娇焦正李霞徐曙光徐慧娟魏凤君
Owner 安徽省通源环境节能股份有限公司
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