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Method for preparing hollow carbon ball

A carbon sphere and hollow technology is applied in the field of preparation of hollow carbon spheres to achieve the effects of high purity, short reaction time and simple post-processing procedures

Inactive Publication Date: 2014-11-19
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the preparation technology of hollow carbon spheres in the past is complicated, the cost is high, and the purity of the produced carbon spheres is low

Method used

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  • Method for preparing hollow carbon ball
  • Method for preparing hollow carbon ball
  • Method for preparing hollow carbon ball

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1. Weigh 0.2g of glucose and 0.1g of ammonium sulfate, dissolve them in 35ml of deionized water, mix well and add them to a 50ml stainless steel reaction kettle.

[0029] 2. Put the above-mentioned stainless steel reaction kettle into a heating furnace with a temperature-programming function, set the heating rate at 1°C / min, after rising to 150°C, keep the temperature constant for 3 hours, and then stop heating, so that the reaction kettle is naturally in the furnace Cool to room temperature.

[0030] 3. Suction filter the above reaction solution, wash the product with deionized water, and finally dry the product at 60°C for 4 hours to obtain the hollow carbon sphere product. figure 1 For the TEM picture of the hollow carbon sphere that embodiment 1 makes

Embodiment 2

[0032] 1. Weigh 1g of glucose and 0.5g of ammonium sulfate, dissolve them in 35ml of deionized water, mix well and add them to a 50ml stainless steel reaction kettle.

[0033] 2. Put the above-mentioned stainless steel reaction kettle into a heating furnace with a temperature-programmed function, set the heating rate at 2°C / min, after rising to 180°C, keep the temperature constant for 2 hours, and then stop heating, so that the reaction kettle can be naturally heated in the furnace. Cool to room temperature.

[0034] 3. Suction filter the above reaction solution, wash the product with deionized water, and finally dry the product at 60°C for 4 hours to obtain the hollow carbon sphere product. figure 2 It is the TEM figure of the hollow carbon sphere that embodiment 2 makes, image 3 It is the TEM image of the hollow carbon spheres prepared in Example 2.

Embodiment 3

[0036] 1. Weigh 5g of glucose and 0.5g of ammonium chloride and dissolve in 35ml of deionized water, mix well and add to a 50ml stainless steel reaction kettle.

[0037] 2. Put the above-mentioned stainless steel reaction kettle into a heating furnace with a temperature-programming function, set the heating rate at 1°C / min, after rising to 150°C, keep the temperature constant for 3 hours, and then stop heating, so that the reaction kettle is naturally in the furnace Cool to room temperature.

[0038] 3. Suction filter the above reaction solution, wash the product with deionized water, and finally dry the product at 60°C for 4 hours to obtain the hollow carbon sphere product.

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Abstract

The invention discloses a method for preparing a hollow carbon ball and belongs to the field of inorganic non-metallic material preparation. The hollow carbon ball is prepared from an oxygen-containing organic matter, an ammonium salt and water as raw materials by a hydrothermal method. Bubbles produced by ammonium salt decomposition in a hydro-thermal process are used as soft templates, the oxygen-containing organic matter is carbonized on surfaces of the bubbles, and then the finished product is obtained by pumping filtration, washing and drying. The method has short reaction time and simple processes. The hollow carbon ball has high water solubility and a high void ratio of volume, can be controllably prepared and massively produced and can be used in fields of adsorption materials, drug carriers and super capacitors.

Description

Technical field: [0001] The invention relates to a preparation method of hollow carbon spheres, belonging to the field of preparation of inorganic non-metallic materials. Background technique: [0002] Hollow carbon sphere materials have large specific surface area, large pore volume, chemical inertness and excellent mechanical stability. These special properties determine their wide application in the fields of catalysis, adsorbents, electrode materials, capacitors, and energy storage materials. prospect. [0003] At present, the main methods for preparing hollow carbon spheres are: template method, vapor deposition method, arc discharge method, etc. [0004] The template method is the most widely used method for preparing hollow carbon spheres. The template method can be divided into hard template method and soft template method according to its material properties. Most of the hard template method uses some monodisperse silicon spheres, polymer spheres, metal oxides...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 姜兴茂闵建中梁帅陈震付鑫李亚情蔡云亮
Owner CHANGZHOU UNIV
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