Method for efficiently preparing sulphur-doped hollow carbon spheres

A technology of hollow carbon spheres and sulfur doping, applied in the field of materials science, can solve the problems of long-term high-temperature calcination and unfavorable industrial production, and achieve the effect of improving efficiency

Inactive Publication Date: 2016-02-03
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above technical problems in the prior art, the present invention provides a method for efficiently preparing sulfur-doped hollow carbon spheres. The method for efficiently preparing sulfur-doped hollow carbon spheres solves the problems in the prior art. The method of doping hollow carbon spheres requires long-term high-temperature calcination, which is not conducive to the technical problems of industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for efficiently preparing sulfur-doped hollow carbon spheres, comprising the following steps:

[0017] (1) Preparation of sulfur-doped carbon-coated iron core-shell particles:

[0018] The catalyst (iron acetylacetonate) and the sulfur source (carbon disulfide) were formulated into a reaction solution with a concentration of 1g / ml and placed in a volumetric flask; the temperature of the tube furnace was raised to the reaction temperature of 600°C, and argon gas was introduced at a flow rate of 80 liters / hour; the reaction solution is injected from the injector inside the main reactor through the electronic peristaltic pump, and the injection speed is 30 ml / hour. Solid carbon spheres doped with sulfur elements in the carbon structure wrapped with iron particles are obtained in the tail product collector of the main reactor.

[0019] (2) Preparation of hollow carbon spheres with sulfur-doped structure

[0020] ① Place the particles obtained in step (1) in a mix...

Embodiment 2

[0024] A method for efficiently preparing sulfur-doped hollow carbon spheres, comprising the following steps:

[0025] (1) Preparation of carbon-coated iron nano-core-shell particles with sulfur-doped structure

[0026] The catalyst (iron acetylacetonate) and the sulfur source (carbon disulfide) were formulated into a reaction solution with a concentration of 0.1g / ml and placed in a volumetric flask; the temperature of the tube furnace was raised to the reaction temperature of 900°C, and argon gas was introduced at a flow rate of It is 120 liters / hour; The reaction solution is injected from the injector inside the main reactor through the electronic peristaltic pump, and the injection speed is 10 ml / hour. Solid carbon spheres doped with sulfur elements in the carbon structure wrapped with iron particles are obtained in the tail product collector of the main reactor.

[0027] (2) Preparation of hollow carbon spheres with sulfur-doped structure

[0028] ① Place the particles o...

Embodiment 3

[0032] (1) Preparation of hollow carbon spheres with sulfur-doped structure

[0033] The catalyst (iron acetylacetonate) and the sulfur source (carbon disulfide) were formulated into a reaction solution with a concentration of 0.025g / ml and placed in a volumetric flask; the temperature of the tube furnace was raised to the reaction temperature of 1350°C, and argon gas was introduced at a flow rate of It is 16 liters / hour; The reaction solution is sprayed from the injector inside the main reactor through the electronic peristaltic pump, and the injection speed is 120 milliliters / hour. Solid carbon spheres doped with sulfur elements in the carbon structure wrapped with iron particles are obtained in the tail product collector of the main reactor.

[0034] (2) Preparation of hollow graphite nanocages with sulfur-doped structure

[0035] ① Place the particles obtained in step (1) in a mixed solution of hydrochloric acid and nitric acid, the volume ratio of which is V 硝 / V 盐 =10...

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Abstract

The invention relates to a method for efficiently preparing sulphur-doped hollow carbon spheres. The method for efficiently preparing the sulphur-doped hollow carbon spheres comprises the following steps: firstly weighing a catalyst and a sulphur source, and mixing the catalyst with the sulphur source, wherein the catalyst is ferric acetylacetonate, the sulphur source is carbon disulfide, and the concentration of the catalyst in the sulphur source is 1-0.025g / ml; introducing the mixture into a tubular furnace, wherein temperature of the tubular furnace is 600-1350 DEG C; introducing inert gas as a carrier gas, inputting a reaction solution into an ejector inside the tubular furnace by virtue of a peristaltic pump, then spraying into a high-temperature region of the tubular furnace, and collecting products at the tail of the tubular furnace, so that carbon-coated iron nano core-shell particles are obtained; and putting the obtained carbon-coated iron nano core-shell particles into the mixed solution of hydrochloric acid and nitric acid, heating to 60-100 DEG C, carrying out magnetic stirring, filtering the obtained mixed liquor, adding deionized water for washing until filtrate is neutral, and immediately drying, so that the sulphur-doped hollow carbon spheres with high specific surface areas are obtained. The method for efficiently preparing the sulphur-doped hollow carbon spheres is easy to operate, simple in after-treatment, and applicable to industrial production.

Description

technical field [0001] The invention belongs to the field of materials science and relates to a nanometer material, in particular to a method for efficiently preparing sulfur-doped hollow carbon spheres. Background technique [0002] With the rise of nanotechnology, the synthesis of nanomaterials with certain functions has become the research focus of many researchers. In recent years, more and more attention has been paid to the practical application value of carbon nanomaterials and their specific performance in applications. Carbon nanomaterials containing doping elements (such as boron, nitrogen, phosphorus, sulfur, etc.), because they can form a p-type or n-type structure, can effectively absorb charges or provide active sites, while improving the conductivity of the material , it is of great application value to apply it to related electronic device materials or catalyst supports. At present, the sulfur-doped carbon materials that have been studied more include activ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00B82Y40/00
Inventor 洪成杨盛赵旻代贤友胡明慧傅一凡常新建
Owner SHANGHAI INST OF TECH
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