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Spherical hollow mesoporous carbon shell and preparing method thereof

A hollow mesoporous and spherical technology, which is applied in the field of spherical hollow mesoporous carbon shells and its preparation, can solve the problems of hollow carbon spheres such as wall thickness and depression, and achieve the effects of various shapes, broad application prospects, and easy-to-obtain templates

Inactive Publication Date: 2013-05-01
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method first synthesizes melamine resin microspheres under hydrothermal conditions, and further carbonizes to obtain hollow carbon microspheres. Although no template is used, the obtained hollow carbon spheres have thick walls and some have depressions.

Method used

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  • Spherical hollow mesoporous carbon shell and preparing method thereof
  • Spherical hollow mesoporous carbon shell and preparing method thereof
  • Spherical hollow mesoporous carbon shell and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: The spherical hollow mesoporous carbon shell is prepared by using the following raw materials and methods.

[0026] (1) Add 2g of triblock copolymer P123 into 20g of absolute ethanol, stir to dissolve; then take 4.5g of spherical calcium carbonate with a particle size of 80nm and mix with the above solution for 30h to obtain a mixed solution.

[0027] (2) Take 2g of phloroglucinol formaldehyde resin and add 10ml of absolute ethanol, stir evenly; then mix and stir with the above mixture; after stirring, carry out polymerization reaction at room temperature for 12 hours, and then carry out repolymerization reaction in an oven at 100°C for 24 hours , to obtain powdered polymer.

[0028] (3) Put the powder polymer into the tube furnace under N 2 Carry out high-temperature carbonization under the atmosphere, and the carbonization process is programmed from room temperature to 800 ° C, and maintained for 1 hour to obtain carbides.

[0029] (4) Put the carbide ...

Embodiment 2

[0030] Embodiment 2: The spherical hollow mesoporous carbon shell is prepared by using the following raw materials and methods.

[0031] (1) Add 2g of triblock copolymer P123 into 20g of absolute ethanol, stir to dissolve; then take 4g of spherical calcium carbonate with a particle size of 500nm and mix with the above solution for 30h to obtain a mixed solution.

[0032] (2) Take 3g of resorcinol formaldehyde resin, add 10ml of absolute ethanol, stir well; then mix and stir with the above mixture; after stirring, carry out polymerization reaction at room temperature for 6 hours, and then carry out repolymerization reaction in an oven at 120°C 36h, the powder polymer was obtained.

[0033] (3) Put the powdered polymer into a tube furnace for N 2 Carbonize at high temperature to 1000°C and maintain for 3 hours to obtain carbonized products.

[0034] (4) Put the carbonized substance into 2mol·L -1 Dissolve and remove calcium carbonate in dilute hydrochloric acid; then wash rep...

Embodiment 3

[0035] Embodiment 3: The spherical hollow mesoporous carbon shell is prepared by using the following raw materials and methods.

[0036] (1) Add 0.5g of triblock copolymer F127 to 20g of absolute ethanol, stir to dissolve; then take 12.5g of spherical calcium carbonate with a particle size of 500nm and mix with the above solution for 28h to obtain a mixed solution.

[0037] (2) Take 2.5g of bisphenol A formaldehyde resin solution, add 10ml of absolute ethanol, stir well; then mix and stir with the above mixture; after stirring, carry out polymerization reaction at room temperature for 20h, and then carry out repolymerization in an oven at 140°C After 12 hours of reaction, powder polymer was obtained.

[0038] (3) Put the powdered polymer into a tube furnace for N 2 Carbonize at high temperature to 800°C and maintain for 6 hours to obtain carbonized products.

[0039] (4) Put the carbonized substance into 1mol·L -1 Calcium carbonate was dissolved and removed in dilute acetic...

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Abstract

The invention discloses a spherical hollow mesoporous carbon shell and a preparing method thereof. The spherical hollow mesoporous carbon shell is formed by synthesizing spherical calcium carbonate, soluble phenolic formaldehyde resin and a block copolymer, wherein the spherical calcium carbonate is used as a template agent, the soluble phenolic formaldehyde resin is used as a carbon resource, and the block copolymer is used as a structure directing agent. The spherical hollow mesoporous carbon shell has the advantages that the spherical calcium carbonate with different particle sizes is used as a template, and different phenolic formaldehyde resins are used as the carbon resource to prepare the hollow mesoporous carbon shell; (1) the preparing method of the calcium carbonate is simple and controllable, the cost is low, the easy obtaining is realized, a large amount of hydroxyl groups are enriched on the surface of the calcium carbonate, and the calcium carbonate is favorable to further carry out reaction, so the calcium carbonate can be used as the potential template agent; and (2) the different phenolic formaldehyde resins are used as the carbon resource, and have higher hydrogen-bonded action binding with a triblock copolymer, the other end of the triblock copolymer is bound with the hydroxyl groups on the surface of the calcium carbonate, then the phenolic resin is coated on the surface of the calcium carbonate, and the template of the calcium carbonate is removed by room-temperature polymerizing, co-polymerizing, inertia gas high-temperature carbonizing, and dilute acid, so the spherical hollow mesoporous carbon shell is obtained.

Description

technical field [0001] The invention relates to a synthetic hollow carbon shell, in particular to a spherical hollow mesoporous carbon shell and a preparation method thereof. Background technique [0002] Hollow mesoporous carbon shell material is a new type of carbon material with a special cavity structure. Its special structure makes it have low bulk density and thermal conductivity, high specific surface area, large pore volume, and unique optical properties. characteristics and excellent electronic conductivity, etc., so it has a good application prospect in the fields of medicine, catalysis, energy storage materials, and electrochemistry. [0003] There are many methods for the synthesis of hollow carbon shells, but the synthesis of spherical hollow carbon shells of different sizes containing mesoporous pores has not been reported so far. At present, a hollow carbon material is synthesized by a hard template method (silicon sphere, polystyrene sphere (PS sphere), etc....

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y40/00C01B32/05
Inventor 张向京王媛媛郝丛武朋涛蒋子超花秀艳胡永其
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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