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A preparation method of mesoporous carbon fiber material assembled with hollow nanocarbon spheres

A technology of hollow nano and fiber materials, applied in the direction of nano carbon, nano technology, nano technology, etc., can solve the problems of single structure and morphology of mesoporous carbon materials, increased production costs, etc., achieve good water dispersion, overcome light specific gravity, The effect of simple process

Active Publication Date: 2017-07-14
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing mesoporous carbon fiber materials assembled with hollow nanocarbon spheres using small molecular organic polycarboxylic acids as monomer carbon sources and self-generated inorganic nanoparticles as templates to overcome the traditional mesoporous carbon materials. The process needs to add soft / hard templates to increase the production cost, and the structure and morphology of mesoporous carbon materials prepared with organic polymers such as phenolic resins as carbon sources are relatively simple.

Method used

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  • A preparation method of mesoporous carbon fiber material assembled with hollow nanocarbon spheres
  • A preparation method of mesoporous carbon fiber material assembled with hollow nanocarbon spheres
  • A preparation method of mesoporous carbon fiber material assembled with hollow nanocarbon spheres

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Effect test

Embodiment 1

[0030] (1) 13.9g of ferrous sulfate was fully dissolved in a mixed solvent (500mL) of isopropanol and water, wherein the volume ratio of isopropanol to water was 0.2:1; 4.8g of nitrilotriacetic acid was dispersed in the above solution. The mixture was left to stand at 180°C for 24 hours, cooled, and then the feed liquid was filtered to remove the solvent, the filtrate was recovered for use, and the filter cake was air-dried at 100°C for 5 hours.

[0031] (2) Place the dried filter cake obtained in step 1 into a crucible and seal it, then heat up to 500°C in a muffle furnace at a rate of 2°C / min and roast for 4h, then cool to room temperature.

[0032] (3) Add 10 g of the roasted product of step (2) into 200 mL, 4 mol / L hydrochloric acid solution and let it stand for 10 h, filter, wash with 2 mol / L sodium hydroxide solution, and then wash with distilled water until the filtrate is neutral, which is the same as 100 °C Blow drying for 5h. That is, nano hollow carbon spheres asse...

Embodiment 2

[0035] (1) 13.1g of nickel sulfate was fully dissolved in a mixed solvent (500mL) of isopropanol and water, wherein the volume ratio of isopropanol to water was 0:1; 3.3g of nitrilotriacetic acid was dispersed in the above solution. The mixture was left to stand at 220°C for 12 hours, cooled, and then the feed liquid was filtered to remove the solvent, the filtrate was recovered for use, and the filter cake was air-dried at 100°C for 5 hours.

[0036] (2) Place the dried filter cake obtained in step 1 into a crucible and seal it, then heat up to 400°C for 6 hours in a muffle furnace at a rate of 1°C / min, and then cool to room temperature.

[0037] (3) Add 8 g of the roasted product of step (2) into 600 mL, 2 mol / L sulfuric acid solution and let it stand for 6 hours, filter, wash with 1 mol / L sodium hydroxide solution, and then wash with distilled water until the filtrate is neutral, which is different from 100 °C Blow drying for 5h. That is, nano hollow carbon spheres assembl...

Embodiment 3

[0040](1) 13.9g of ferrous sulfate was fully dissolved in a mixed solvent (500mL) of isopropanol and water, wherein the volume ratio of isopropanol to water was 0.5:1; 3.3g of nitrilotriacetic acid was dispersed in the above solution. The mixture was left to stand at 200°C for 18 hours, cooled, and then the feed liquid was filtered to remove the solvent, the filtrate was recovered for use, and the filter cake was air-dried at 100°C for 5 hours.

[0041] (2) Place the dried filter cake obtained in step 1 into a crucible and seal it, then heat up to 600°C in a muffle furnace at a rate of 5°C / min and roast for 3h, then cool to room temperature.

[0042] (3) Add 6 g of the roasted product of step (2) into 400 mL, 3 mol / L nitric acid solution and let it stand for 8 hours, filter, wash with 0.5 mol / L sodium hydroxide solution, and then wash with distilled water until the filtrate is neutral. ℃ blast drying for 5h. That is, nano hollow carbon spheres assembled mesoporous carbon fibe...

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Abstract

The invention discloses a preparation method of a hollow carbon nanospheres-assembled mesoporous carbon fiber material and belongs to the technical field of preparation of a mesoporous carbon material. According to the method, nitrilotriacetic acid or soluble metallic ferrous salt or nickel salt are used as raw materials to synthesize a metal complex fiber precursor by a solvothermal method; the complex fiber precursor is calcined under airtight conditions or in argon atmosphere to obtain a core-shell structured nanospheres-assembled carbon / metallic oxide (metal) compound; and the core (metallic oxide (metal)) of the nanospheres in the compound fiber undergoes acid etching to obtain the hollow nanospheres-assembled carbon fiber material rich in carboxy groups. The preparation method has advantages as follows: the process is simple; a solvent can be recovered and recycled; and the preparation cost is low. The prepared carbon material is formed by assembling of hollow nanospheres, has a novel structure and has a good application prospect in fields of adsorption, catalyst carrier and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of mesoporous carbon materials, and in particular relates to a method for preparing mesoporous carbon fiber materials assembled from hollow nano-carbon spheres. Background technique [0002] Porous materials are new functional materials that can be used as catalyst supports, adsorbents, etc. Activated carbon is one of the important adsorption materials due to its relatively large specific surface area and strong adsorption capacity. However, micropores (pore diameter <2nm) occupy a large proportion of activated carbon materials, and relatively large molecules or compounds cannot enter the pores, which greatly reduces the adsorption capacity of activated carbon. [0003] Mesoporous carbon is a new class of mesoporous materials, which is considered to be the second generation of mesoporous materials after mesoporous silicon oxide. The large specific surface area can effectively realize the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/15B82Y30/00
CPCC01P2002/72C01P2004/03C01P2004/04C01P2004/10C01P2004/50C01P2006/12C01P2006/16
Inventor 贾志刚李圣标李紫宇李雯雯江珊汪亮
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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