Preparation method of graphene sponge for efficient oil-water separation

A graphene sponge, oil-water separation technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve industrial costs, long ecological balance time, oil boom can not ensure oil diffusion trend, and environmental secondary pollution etc. to achieve strong oil absorption, good hydrophobicity, and enhanced hydrophobicity

Inactive Publication Date: 2019-04-12
SHANDONG XINGHUO SCI TECH INSTITYTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical mechanical recovery method not only solves the problem of oil slicks on the ocean, but also recycles energy without wasting energy. However, the oil boom cannot ensure rapid and complete control of the oil diffusion trend, so it still has certain limitations.
The combustion method seems to be the simplest method, but the products after combustion will cause secondary pollution to the environment, so all oil spills on the high seas have not use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] A method for preparing graphene sponge with high efficiency oil-water separation includes the following steps:

[0022] (1) Wash the polyurethane sponge in ethanol for 10 minutes and dry it in a vacuum drying box to obtain a clean polyurethane sponge;

[0023] (2) Preparation of graphene oxide: Add flake graphite to the mixture of sodium nitrate and concentrated sulfuric acid, and stir uniformly magnetically under ice bath conditions; slowly add potassium permanganate to the mixed solution to control the temperature of the mixed solution below Stir magnetically at 20℃ for 1h, then control the temperature of the mixed solution to 35℃ and stir magnetically for 1h under ice bath; then add deionized water at 70℃ to the mixed solution, and finally add 30% hydrogen peroxide. Obtain a bright yellow mixed solution, centrifuged with deionized water to wash to pH 6 to obtain graphene oxide; flake graphite, sodium nitrate, concentrated sulfuric acid, potassium permang...

Example Embodiment

[0029] Example 2

[0030] A method for preparing graphene sponge with high efficiency oil-water separation includes the following steps:

[0031] (1) Wash the polyurethane sponge in ethanol for 20 minutes and dry it in a vacuum drying box to obtain a clean polyurethane sponge;

[0032] (2) Preparation of graphene oxide: Add flake graphite to the mixture of sodium nitrate and concentrated sulfuric acid, and stir uniformly magnetically under ice bath conditions; slowly add potassium permanganate to the mixed solution to control the temperature of the mixed solution below Stir magnetically at 20℃ for 1-3h, then control the temperature of the mixed solution to 35-45℃ and stir it magnetically for 1-2h under ice bath conditions; then add deionized water at 70℃ to the mixed solution, and finally add mass fraction concentration After 30% hydrogen peroxide, a bright yellow mixed solution is obtained. After centrifugal washing with deionized water to pH 6-7, graphene oxide is obtained; flake ...

Example Embodiment

[0038] Example 3

[0039] A method for preparing graphene sponge with high efficiency oil-water separation includes the following steps:

[0040] (1) Wash the polyurethane sponge in ethanol for 14 minutes and dry it in a vacuum drying box to obtain a clean polyurethane sponge;

[0041] (2) Preparation of graphene oxide: Add flake graphite to the mixture of sodium nitrate and concentrated sulfuric acid, and stir uniformly magnetically under ice bath conditions; slowly add potassium permanganate to the mixed solution to control the temperature of the mixed solution to be lower than Stir magnetically at 20℃ for 1-3h, then control the temperature of the mixed solution to 35-45℃ and stir it magnetically for 1-2h under ice bath conditions; then add deionized water at 70℃ to the mixed solution, and finally add mass fraction concentration After 30% hydrogen peroxide solution, a bright yellow mixed solution is obtained. After centrifugal washing with deionized water to a pH of 6-7, graphene ...

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Abstract

A preparation method of graphene sponge for efficient oil-water separation comprises the following steps that (1) clean polyurethane sponge is taken; (2) graphene oxide is prepared; (3) graphene oxidedispersion is prepared; (4) 2 mg/ ml of graphene oxide ethanol suspension is prepared; (5) hydrazine hydrate and the clean polyurethane sponge obtained in the step 1 are added into the graphene oxideethanol suspension obtained in the step 4, the mixture is put in a chemical microwave reactor, microwave heating reaction is executed for 30-60 minutes, then the mixture is put in an ultrasonic cleaner, ultrasonic dispersion is executed for 30-50 minutes to increase the distribution uniformity of graphene oxide, the sponge is taken out, washed with deionized water, and is dried in an oven at 80-100 DEG C; (6) a polydimethylsiloxane/n-hexane solution is prepared; (7) the graphene sponge for efficient oil-water separation is prepared. The graphene sponge has excellent adsorption properties as well as good hydrophobicity.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of a graphene sponge for efficient oil-water separation. Background technique [0002] With the rapid development of modern industry, the increasing scarcity of land resources and the rapid growth of human demand for energy, shallow sea oil and gas resources have been continuously developed. However, with the development of submarine oil and crude oil, their products are also continuously transported at sea, which inevitably produces many marine oil pollution incidents, such as blowout accidents during development and leakage accidents from transport tankers. Oil spills on the ocean not only brought us huge economic losses, but more importantly, caused significant pollution to the marine ecological environment and surrounding coasts. First of all, oil will seriously endanger the survival of aquatic organisms. After marine mammals ingest oil spills, their vis...

Claims

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Application Information

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IPC IPC(8): C08J9/40C08J9/42B01D17/022C09K3/32C08L75/04
CPCB01D17/0202C08J9/40C08J9/42C08J2375/04C09K3/32
Inventor 车春玲
Owner SHANDONG XINGHUO SCI TECH INSTITYTE
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