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Preparation method of carbon nano-tube and graphene-based oil absorption foam material

A carbon nanotube and foam material technology is applied in the field of preparation, which can solve the problems of low reuse rate and easy falling off of the adsorption layer, and achieve the effects of high oil absorption rate, improved mechanical strength, and easy mass production.

Active Publication Date: 2015-04-22
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption layer of these graphene-based oil-absorbing foam materials is easy to fall off during the oil-absorbing process, resulting in a low reuse rate.

Method used

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  • Preparation method of carbon nano-tube and graphene-based oil absorption foam material
  • Preparation method of carbon nano-tube and graphene-based oil absorption foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Mix strong oxidant 98% concentrated sulfuric acid, graphene oxide, and carbon nanotubes at a mass ratio of 100:1:0.1, ultrasonically perform deep oxidation for 10 minutes, and then filter and wash to neutral to form a concentration of 0.1mg / mL water dispersion. Submerge a polyurethane porous sponge cube with a side length of 5 cm in 62.5 mL of graphene oxide / carbon nanotube dispersion for 0.5 min, take it out and irradiate it with a 500W microwave for 30 min, then place it in a vacuum oven at 40 °C Dry until completely dry, and treat the dried carbon nanotube / graphene oxide foam material in a tube furnace at a temperature of 100°C for 10 hours to obtain a carbon nanotube / graphene-based oil-absorbing foam material. Table 1.

Embodiment 2

[0024] Mix 70% concentrated nitric acid, graphene oxide, and carbon nanotubes at a mass ratio of 200:1:0.01 as a strong oxidizing agent, and perform deep oxidation by ultrasonication for 50 minutes. Dispersions. Submerge a cube of polyurethane porous sponge with a side length of 5 cm in 125 mL of graphene oxide / carbon nanotube dispersion for 2 min, take it out and irradiate it with a microwave of 700 W for 20 min, then place it in a vacuum oven and dry it at 60 °C Until it was completely dry, the dried carbon nanotube / graphene oxide foam material was treated in a tube furnace at a temperature of 200°C for 5 hours to obtain a carbon nanotube / graphene-based oil-absorbing foam material, and its oil-absorbing performance was tested in Table 1.

Embodiment 3

[0026] Mix 30% hydrogen peroxide, graphene oxide, and carbon nanotubes at a mass ratio of 300:1:0.2 as a strong oxidizing agent, and perform deep oxidation by ultrasonication for 100 minutes. liquid. Submerge a polyurethane porous sponge cube with a side length of 5 cm in 250 mL of graphene oxide / carbon nanotube dispersion for 30 min, take it out and irradiate it with 1000 W microwave for 1 min, then place it in a vacuum oven and dry it at 40 °C Until it is completely dry, the dried carbon nanotube / graphene oxide foam material is treated in a tube furnace at a temperature of 350°C for 0.5h to obtain a carbon nanotube / graphene-based oil-absorbing foam material, and its oil-absorbing performance is shown in the table 1.

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Abstract

The invention provides a preparation method of a carbon nano-tube and graphene-based oil absorption foam material. The method comprises the steps that 1, a carbon nano-tube, graphene oxide and strong oxidant are mixed and subjected to ultrasound treatment for 10-200 min for deep oxidation, subjected to suction filtration and washing to be neutral and then prepared into aqueous dispersion liquid; 2, polymer porous sponge is immersed into the aqueous dispersion liquid for 0.5-30 min; 3, microwave irradiation or light wave irradiation is conducted first and then vacuum drying is conducted; 4, further reduction is conducted. The material prepared through the method is good in oil-water selectivity, high in oil absorption speed and high in oil absorption ratio; moreover, absorbed oil can be recovered through simple extrusion, and especially a coating layer and a sponge base body are good in chemical bonding, stable in structure, high in cyclic utilization rate and capable of being used repeatedly for thousands of times without falling off.

Description

technical field [0001] The invention relates to a preparation method of an oil-absorbing composite material. In particular, it relates to a preparation method of a carbon nanotube / graphene-based oil-absorbing foam material. Background technique [0002] In recent years, the exploitation and transportation of oil and the arbitrary discharge of industrial and domestic waste oil have caused serious pollution to the ecological environment. Therefore, efficient, environmentally friendly, and recyclable oil-absorbing materials are urgently needed to be developed. With the emergence of graphene, its unique two-dimensional structure and excellent physical and chemical properties have shown a wide range of applications in the fields of composite materials, energy storage and adsorption separation. Since graphene has a high theoretical specific surface area (2630m 2 / g), and exhibit good hydrophobic properties, so graphene-based oil-absorbing materials have unlimited potential. At...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/40
CPCB01J20/20B01J20/3214B01J20/3225B01J2220/4806C02F1/281C02F1/40C02F2103/007
Inventor 范壮军江丽丽盛利志魏彤
Owner HARBIN ENG UNIV
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