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Preparation method of highly-dispersed nano-carbon particles

A nano-carbon, high-dispersion technology, applied in the direction of nano-carbon, nanotechnology, nanotechnology, etc., can solve the problems of complicated process and complex preparation method of nano-carbon particles, and achieve the effect of simple process and strong practical value

Active Publication Date: 2013-02-06
江阴智产汇知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation method of nano-carbon particles disclosed at present is complicated. For example, the patent with publication number CN1528662 discloses a process for preparing nano-carbon powder, which requires the use of high-energy equipment such as lasers, and the process is relatively complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add dropwise a solution containing 10 mmol of cationic surfactant octaalkyltrimethylammonium bromide to the suspension containing 10 g of bentonite in a water bath at 65 °C, the concentration of the surfactant solution is 4 mol / L, drop Stir continuously during the addition process, continue to stir for 2 h under the same conditions after the dropwise addition, centrifuge, wash the obtained solid with deionized water for 5 times, dry at 105°C, and grind the solid into 80-mesh powder , in which the cationic surfactant is fixed as a single molecule between the bentonite layers through ion exchange; the powder is placed in a tube furnace and passed through N 2 protection, carbonization at 800°C for 6h, and then continue to pass N 2 Cool to room temperature, the surfactant molecules are carbonized at high temperature; put 4g of the carbonized solid into the bottle, add 15mL of 40% hydrofluoric acid solution, stir for 3h, separate the solid and liquid, then add the solid into...

Embodiment 2

[0024] Add dropwise a solution containing 5 mmol of cationic surfactant cetyltrimethylammonium bromide to the suspension containing 10 g of bentonite in a water bath at 60 ° C. The concentration of the surfactant solution is 1 mol / L. Stir continuously during the addition process, continue to stir for 2 h under the same conditions after the dropwise addition, centrifuge, wash the obtained solid with deionized water 4 times, dry at 100°C, and grind the solid into a 50-mesh powder , in which the cationic surfactant is fixed as a single molecule between the bentonite layers through ion exchange; the powder is placed in a tube furnace and passed through N 2 protection, carbonization at 500°C for 4h, and then continue to pass N 2 Cool to room temperature, the surfactant molecules are carbonized at high temperature; put 2 g of the carbonized solid into the bottle, add 10 mL of 20% hydrofluoric acid solution, stir for 2 h, separate the solid from the liquid, and then separate the soli...

Embodiment 3

[0027] Add dropwise a solution containing 7mmol of cationic surfactant dodecyltrimethylammonium bromide to the suspension containing 10 g of bentonite in a water bath at 65°C, the concentration of the surfactant solution is 3mol / L, dropwise Stir continuously during the process, continue to stir for 2 h under the same conditions after the dropwise addition, centrifuge, wash the obtained solid with deionized water for 5 times, dry at 105 °C, grind the solid into a 60-mesh powder, and In this process, the cationic surfactant is fixed as a single molecule between the bentonite layers through ion exchange; the powder is placed in a tube furnace and passed through N 2 protection, carbonization at 600°C for 5h, and then continue to pass N 2 After cooling to room temperature, the surfactant molecules are carbonized at high temperature; put 3 g of the carbonized solid into the bottle, add 12 mL of 30% hydrofluoric acid solution, stir for 3 hours, separate the solid from the liquid, and...

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PUM

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Abstract

The invention discloses a preparation method of highly-dispersed nano-carbon particles, comprising the following steps of: dropwise adding a solution containing 5-10mmol of positive ion surface active agents into a suspension liquid containing 10g of bentonite in a water bath with the temperature of 60-65 DEG C, centrifugally separating, cleaning the obtained solid substance with deionized water, drying and grinding into powder; placing the powder into a tube furnace, introducing N2 for protection, carbonizing at the temperature of 500-800 DEG C for 4-6h, continuously introducing N2 again, cooling to the room temperature, placing 2-4g of the carbonized solid substance into a bottle, adding 10-15mL of hydrofluoric acid solution with the concentration of 20-40%, carrying out solid-liquid separation, and then, adding the hydrofluoric acid solution into 10-15mL of hydrochloric acid solution with the concentration of 20-40%; and carrying out solid-liquid separation, cleaning with deionized water and drying at the temperature of 60-70 DEG C for 5-6h to obtain the highly-dispersed nano-carbon particles. The preparation method is simple in process; and negative ion surface active agents and pollutants in waste water can be simultaneously removed by adding a small number of the highly-dispersed nano-carbon particles.

Description

technical field [0001] The invention relates to a method for preparing a nano-carbon material, in particular to a method for preparing a nano-carbon material. Background technique [0002] Nanomaterials refer to materials with at least one dimension in the nanometer scale (1-100nm) in three-dimensional space. Due to the extremely small size of nanoparticles, the properties of their substances change suddenly, resulting in effects that conventional particles do not have: ① small size effect (volume effect); ② quantum size effect; ③ macroscopic quantum tunneling effect; ④ surface effect. It is the abnormal adsorption ability, chemical reaction ability, photocatalytic performance, etc. caused by these special effects of nanoparticles, which make it widely used in materials, medicine, bioengineering and environmental protection, and can be used to modify internal combustion engine lubricating oil ; Particle reinforcing agent can effectively improve the quality and performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00C01B32/15
Inventor 马建锋邹静李定龙杨彦
Owner 江阴智产汇知识产权运营有限公司
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