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Highly graphitized boron-doped 'dumbbell-shaped' microporous and mesoporous carbon and preparation method thereof

A high-temperature graphitization and boron doping technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve problems such as increasing the preparation cost, strong corrosion of equipment, etc., to promote vigorous development, low cost and simple method. Effect

Active Publication Date: 2019-05-10
HENAN INST OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of a large number of chemical reagents increases the cost of preparation, and has a strong corrosion effect on equipment at high temperatures. A large amount of water is required in the washing process. These waste water can only meet the environmental protection discharge requirements after complex treatment processes

Method used

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  • Highly graphitized boron-doped 'dumbbell-shaped' microporous and mesoporous carbon and preparation method thereof
  • Highly graphitized boron-doped 'dumbbell-shaped' microporous and mesoporous carbon and preparation method thereof
  • Highly graphitized boron-doped 'dumbbell-shaped' microporous and mesoporous carbon and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A preparation method of highly graphitized boron-doped "dumbbell-shaped" micro-mesoporous carbon, the steps are as follows:

[0038] (1) Hydrothermal treatment

[0039] Put 15g of glucose and 1g of sodium dodecylbenzenesulfonate into a beaker, add deionized water to dissolve, stir and put it into an ultrasonic cleaner for ultrasonic cleaning, the stirring time is 30min, the stirring speed is 200r / min, and the ultrasonic time 20min, ultrasonic power 100W; then transferred to the hydrothermal reaction kettle for hydrothermal reaction, the hydrothermal reaction temperature is 180 ℃, the hydrothermal time is 10h, after cooling to room temperature, the obtained material is filtered and washed with deionized water until neutral , put it into an oven for drying, the drying temperature is 70°C, and the drying time is 12 hours to obtain a hydrothermal carbon material;

[0040] (2) High temperature graphitized boron doping treatment

[0041]After grinding and mixing 12g of hydr...

Embodiment 2

[0049] A preparation method of highly graphitized boron-doped "dumbbell-shaped" micro-mesoporous carbon, the steps are as follows:

[0050] (1) Hydrothermal treatment

[0051] Put 20g of fructose and 1g of polyethylene glycol octylphenyl ether into a beaker, add deionized water to dissolve, stir and put it into an ultrasonic cleaner for ultrasonic cleaning, the stirring time is 20min, the stirring speed is 100r / min, ultrasonic The time is 10min, and the ultrasonic power is 200W; then it is transferred to a hydrothermal reaction kettle for hydrothermal reaction, the hydrothermal reaction temperature is 170°C, and the hydrothermal time is 8h. After cooling to room temperature, the obtained material is filtered and washed with deionized water to medium properties, put it into an oven for drying, the drying temperature is 80°C, and the drying time is 12 hours to obtain a hydrothermal carbon material;

[0052] (2) High temperature graphitized boron doping treatment

[0053] After...

Embodiment 3

[0057] A preparation method of highly graphitized boron-doped "dumbbell-shaped" micro-mesoporous carbon, the steps are as follows:

[0058] (1) Hydrothermal treatment

[0059] Put 25g of sucrose and 1g of cetyltrimethylammonium bromide into a beaker, add deionized water to dissolve, stir and put it into an ultrasonic cleaner for ultrasonic cleaning, the stirring time is 40min, and the stirring speed is 300r / min. The ultrasonic time is 30min, and the ultrasonic power is 300W; then it is transferred to a hydrothermal reaction kettle for hydrothermal reaction, the hydrothermal reaction temperature is 200°C, and the hydrothermal time is 6h. After cooling to room temperature, the obtained material is filtered and washed with deionized water until Neutral, put it in an oven for drying, the drying temperature is 90°C, and the drying time is 12h, to obtain a hydrothermal carbon material;

[0060] (2) High temperature graphitized boron doping treatment

[0061] After grinding and mix...

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Abstract

The invention provides highly graphitized boron-doped 'dumbbell-shaped' microporous and mesoporous carbon and a preparation method thereof. The microporous and mesoporous carbon is a microporous and mesoporous carbon sphere with a 'dumbbell-shaped' structure, the conductivity is 5.5-10.2 S / cm, the graphitization degree is up to 92-98%, the specific surface area is 500-1000 m<2> / g, the pore volumeis 0.5-1 cm<3> / g, and the boron content is 0.5-2wt%. According to the invention, a hydrothermal method, a high-temperature graphitization method and a physical activation method are combined to prepare the highly graphitized boron-doped 'dumbbell-shaped' microporous and mesoporous carbon, the method is simple and feasible, no pollution such as acid and alkali is generated in the operation process,and the obtained product is high in grade; and the prepared highly graphitized boron-doped 'dumbbell-shaped' microporous and mesoporous carbon material can be applied to the fields of wastewater treatment, soil ecological restoration, gas adsorption, lithium ion batteries, sodium ion batteries, lithium sulfur batteries, microbial fuel cells and the like, and vigorous development of the novel carbon nano materials in China is greatly promoted.

Description

technical field [0001] The invention relates to the field of carbon material preparation, in particular to a highly graphitized boron-doped "dumbbell-shaped" micro-mesoporous carbon and a preparation method thereof. Background technique [0002] Micro-mesoporous carbon materials have large specific surface area and pore volume, uniform and adjustable pore size, and controllable morphology. It has a wide range of applications in adsorption and optoelectronic micro-devices. In addition to the aforementioned properties, micro-mesoporous carbon materials also show attractive prospects in the fields of supercapacitors, lithium-ion batteries, and fuel cells. [0003] At present, the methods for synthesizing micro-mesoporous carbon materials mainly include hard template method, assembly method and hydrothermal method. The hard template method usually uses a carbon source to cast mesoporous silicon oxide, and removes the silicon oxide hard template after carbonization to prepare m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/205C01B32/336
Inventor 陈锋任建刚孙哲马路路宋志敏李冰吴娜娜马沈轲刘欣欣李子千卢可馨
Owner HENAN INST OF ENG
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