Preparation method of mesoporous carbon/ graphene oxide compound

A technology of mesoporous carbon and graphene, which is applied in the field of preparation of mesoporous carbon/graphene oxide composites, can solve the problems of difficult to realize industrial production, cumbersome preparation process, complicated processing, etc., and achieve easy surface modification, simple process, Effect of fluffy thin-walled structure

Active Publication Date: 2018-01-30
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, to prepare mesoporous carbon / graphene oxide composites, it is generally necessary to pre-synthesize mesoporous carbon and graphene oxide, and then mix them to form a composite. Therefore, the preparation process is cumbersome, the subsequent processing is complicated, the cost is high, and it is difficult to realize industrial production.

Method used

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  • Preparation method of mesoporous carbon/ graphene oxide compound
  • Preparation method of mesoporous carbon/ graphene oxide compound
  • Preparation method of mesoporous carbon/ graphene oxide compound

Examples

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Embodiment 1

[0033] A preparation method of mesoporous carbon / graphene oxide composite, comprising the steps of:

[0034] 1) Preparation of mesoporous carbon

[0035] The coal tar pitch and aluminum sulfate were weighed and mixed according to the mass ratio of 1:3, using isopropanol as the solvent, and the mass ratio of the mixture to the solvent was 1:3. The two were mixed uniformly by mechanical stirring, and nitrogen gas was introduced, the stirring temperature was 150° C., and the stirring time was 2 h. After stirring evenly, the solvent was distilled off under reduced pressure and placed in a vacuum oven (1.0×10 -1 Pa) Dry for 8h and cool to room temperature. The dried samples were placed in an atmosphere furnace, fed with nitrogen, heated to 1000°C at a rate of 10°C / min, kept for 5 hours, cooled to room temperature and taken out for later use.

[0036] 2) Preparation of mesoporous carbon / graphene oxide composites

[0037] The mesoporous carbon was prepared by the improved hummers...

Embodiment 2

[0040] A preparation method of mesoporous carbon / graphene oxide composite, comprising the steps of:

[0041] 1) Preparation of mesoporous carbon

[0042]The petroleum pitch and aluminum isopropoxide were weighed and mixed according to the mass ratio of 1:1, and isopropanol was used as the solvent, and the mass ratio of the mixture to the solvent was 1:2. The two were mixed uniformly by mechanical stirring, and nitrogen gas was introduced, the stirring temperature was 110° C., and the stirring time was 1 h. After stirring evenly, the solvent was distilled off under reduced pressure, and placed in a 50°C vacuum oven (1.0×10 -1 Pa) Dry for 3h and cool to room temperature. The dried samples were placed in an atmosphere furnace, fed with nitrogen, first heated to 600 °C at 15 °C / min, kept for 1 h, then raised to 1600 °C at 5 °C / min, kept for 2 h, cooled to room temperature and taken out for use.

[0043] 2) Preparation of mesoporous carbon / graphene oxide composites

[0044] The...

Embodiment 3

[0047] A preparation method of mesoporous carbon / graphene oxide composite, comprising the steps of:

[0048] 1) Preparation of mesoporous carbon

[0049] The natural asphalt and aluminum nitrate were weighed and mixed according to the mass ratio of 4:1, n-butanol was used as the solvent, and the mass ratio of the mixture to the solvent was 1:5. The two were mixed uniformly by mechanical stirring, and nitrogen gas was introduced, the stirring temperature was 90°C, and the stirring time was 2h. After stirring evenly, the solvent was distilled off under reduced pressure, and placed in a 90°C vacuum oven (1.0×10 -1 Pa) Dry for 5h and cool to room temperature. The dried samples were placed in an atmosphere furnace, fed with nitrogen, heated to 800 °C at 10 °C / min, kept for 1 h, then raised to 1200 °C at 8 °C / min, kept for 2 h and kept for 4 h, cooled to room temperature and taken out for use.

[0050] 2) Preparation of mesoporous carbon / graphene oxide composites

[0051] The me...

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Abstract

The invention discloses a preparation method of a mesoporous carbon / graphene oxide compound. The preparation method comprises the following steps: weighing asphalt and an additive, mixing the asphaltand the additive at a mass ratio of (1 to 10) to (10 to 1), then, adding solvent of 1-10 times of mass into a mixture, stirring, evenly mixing, distilling the solvent, then, putting in an oven to bedried, and then, preparing the mesoporous carbon / graphene oxide compound through a carbonization and oxidization technology. An in-situ growth method is adopted, graphene does not need to be preparedin advance, and the prepared mesoporous carbon / graphene oxide compound has a relatively high specific surface area, good adsorption performance on dye and heavy metal and high recyclable rate, wherein the specific surface area is 150-700m<2> / g, and a graphene degree is 30-50 percent. In addition, the preparation method has the advantages of rich raw material, low price, simpleness in operation and easiness in realizing industrial production.

Description

technical field [0001] The invention belongs to the field of nano-carbon material preparation, and in particular relates to a preparation method of a mesoporous carbon / graphene oxide compound. Background technique [0002] Mesoporous carbon is a porous carbon material with a pore size distribution in the range of 2-50nm. Compared with traditional porous carbon, mesoporous carbon has higher porosity, narrower pore size distribution, larger pore volume and adjustable pore size. In addition, due to its high specific surface area, good thermal and chemical stability, excellent electrical conductivity, and strong mechanical strength, it has good application prospects in adsorption, energy storage, hydrogen storage, and catalysis. . At present, the preparation methods of mesoporous carbon mainly include catalytic activation method, sol-gel method and template method. The catalytic activation method is to use metals and their compounds to catalyze the gasification of carbon to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C01B32/19
Inventor 林起浪张夏兰阮克钊
Owner FUZHOU UNIV
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