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Graphene-based sponge as well as preparation method and application thereof

A technology of alkenyl sponge and graphene, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of troublesome recycling work, insufficient hydrophobic performance, poor oil-water selectivity, etc., achieve good treatment effect, simple operation, Environmentally friendly effect

Inactive Publication Date: 2021-12-03
北京美斯顿科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional oil-absorbing materials generally have small oil absorption capacity, low oil retention capacity, and poor oil-water selectivity; in addition, the hydrophobic properties of these oil-absorbing materials are usually not enough, and water will be absorbed while recovering floating oil, and sometimes even sink due to excessive water absorption. Entering the bottom of the water, causing trouble for recycling efforts

Method used

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  • Graphene-based sponge as well as preparation method and application thereof
  • Graphene-based sponge as well as preparation method and application thereof
  • Graphene-based sponge as well as preparation method and application thereof

Examples

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preparation example Construction

[0022] According to one aspect of the present invention, the present invention relates to a kind of preparation method of graphene-based sponge, comprises the following steps:

[0023] The mixture of the dispersion of graphene oxide and the polyurethane sponge is subjected to ultrasonic treatment to obtain a polyurethane sponge loaded with graphene oxide; then the polyurethane sponge loaded with graphene oxide is subjected to heat treatment;

[0024] The temperature of the heat treatment is 140-220° C., and the time of the heat treatment is 5-20 hours.

[0025] The present invention mixes the dispersion liquid of graphene oxide and polyurethane sponge and performs ultrasonic treatment, so that graphene oxide is evenly loaded on the polyurethane sponge, and then the graphene-based sponge material can be obtained through high-temperature reduction; the method does not add chemical reducing agent, Green, non-toxic, environmentally friendly, and easy to operate, the obtained graph...

Embodiment 1

[0071] A preparation method of lipophilic and hydrophobic graphene-based sponge, comprising the following steps:

[0072] (a) ultrasonically wash the polyurethane sponge in ultrapure water and absolute ethanol for 15 minutes, then put the polyurethane sponge into a blast drying oven, and dry at 65°C for 45 minutes;

[0073] (b) take flake graphite powder, sodium nitrate, potassium permanganate respectively, at first flake graphite and sodium nitrate are added in the there-necked flask, then add the concentrated sulfuric acid that mass percentage is 98%, add magneton and stir, will The three-neck flask was placed in a crushed ice bath, and potassium permanganate was added to react for 35 minutes under the crushed ice bath condition. The flask was moved into a water bath at 45°C to continue the reaction. After 40 minutes, the temperature of the water bath was raised to 90°C. During the heating process, add Pure water, add an appropriate amount of hydrogen peroxide with a mass pe...

Embodiment 2

[0079] A preparation method of lipophilic and hydrophobic graphene-based sponge, comprising the following steps:

[0080] (a) ultrasonically wash the polyurethane sponge in ultrapure water and absolute ethanol for 10 minutes respectively, then put the polyurethane sponge into a blast drying oven, and dry at 60°C for 40 minutes;

[0081] (b) take flake graphite powder, sodium nitrate, potassium permanganate respectively, at first flake graphite and sodium nitrate are added in the there-necked flask, then add the concentrated sulfuric acid that mass percentage is 98%, add magneton and stir, will The three-necked flask was placed in a crushed ice bath, and potassium permanganate was added to react for 50 minutes under the crushed ice bath condition. The flask was moved into a 50°C water bath to continue the reaction. After 40 minutes, the temperature of the water bath was raised to 85°C. During the heating process, add Pure water, add an appropriate amount of hydrogen peroxide wi...

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Abstract

The invention relates to the technical field of environment-friendly materials, in particular to graphene-based sponge and a preparation method and application thereof. The preparation method of the graphene-based sponge comprises the following steps: performing ultrasonic treatment on a mixture of dispersion liquid of graphene oxide and polyurethane sponge to obtain the polyurethane sponge loaded with the graphene oxide; and then carrying out heating treatment on the polyurethane sponge loaded with the graphene oxide; wherein the temperature of the heating treatment is 140-220 DEG C, and the time of the heating treatment is 5-20 hours. The preparation method of the graphene-based sponge is green, non-toxic, environment-friendly and simple to operate, and the obtained graphene-based polyurethane sponge material has excellent oleophylic and hydrophobic properties, can be repeatedly used after being regenerated, and has a very good treatment effect on sewage containing oily substances and / or organic solvents.

Description

technical field [0001] The invention relates to the technical field of environmental protection materials, in particular to a graphene-based sponge and its preparation method and application. Background technique [0002] The main source of oil pollution in water bodies is human activities. Since the beginning of the last century, oil has become one of the most important energy sources for human beings, and the production and consumption of oil have increased rapidly. During the transportation of petroleum products, the risk of oil spill pollution from ships, especially from extra-large ships, increases. The oil pollutants floating on the surface of the water body will affect the oxygen exchange between the air and the water body interface; those dispersed in the water can be oxidized and decomposed by microorganisms, consuming dissolved oxygen in the water and deteriorating the water quality. Among them, petroleum compounds contain aromatic hydrocarbons. Although they are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/36C08L75/04C08K3/04C02F1/40B01D17/022
CPCC08J9/40C08J9/36C02F1/40B01D17/0202C08J2375/04C08K3/042
Inventor 王研李坤霍珊宋硕李常青吴俊霞李春雨
Owner 北京美斯顿科技开发有限公司
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