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A kind of oil-water separation type sodium alginate/graphene oxide composite airgel and preparation method thereof

A technology of graphene composite and sodium alginate, applied in the direction of airgel preparation, separation methods, chemical instruments and methods, etc., can solve problems such as complex practical operations, achieve simple preparation process, expand the scope of application, and good reusability Effect

Inactive Publication Date: 2019-07-19
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method can make the resulting gel solution more uniform, the actual operation is more complicated

Method used

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  • A kind of oil-water separation type sodium alginate/graphene oxide composite airgel and preparation method thereof
  • A kind of oil-water separation type sodium alginate/graphene oxide composite airgel and preparation method thereof
  • A kind of oil-water separation type sodium alginate/graphene oxide composite airgel and preparation method thereof

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Embodiment 1

[0044] Embodiment 1, a kind of preparation method of oil-water separation type sodium alginate / graphene oxide composite airgel comprises the following steps:

[0045] (1) Preparation of sodium alginate / graphene oxide mixture:

[0046] A. Preparation of sodium alginate solution: Dissolve sodium alginate in deionized water, stir magnetically at 1000 rpm for 1 hour, then gradually reduce the stirring speed to 500 rpm until it becomes a transparent solution, and prepare a sodium alginate solution with a concentration of 2wt%. ;

[0047] B, sonication concentration is 1wt% graphene oxide suspension 15min, then, add in the sodium alginate solution of step A, make graphene oxide and sodium alginate mass ratio be 1:10, 1500rpm magnetic stirring 2h, obtain Uniform sodium alginate / graphene oxide dispersion;

[0048] (2) Preparation of uncrosslinked sodium alginate / graphene oxide composite airgel:

[0049] Put the vessel containing the sodium alginate / graphene oxide dispersion obtaine...

Embodiment 2

[0067] Embodiment 2, a kind of preparation method of oil-water separation type sodium alginate / graphene oxide composite airgel, comprises the following steps:

[0068] (1) Preparation of sodium alginate / graphene oxide mixture:

[0069] A. Preparation of sodium alginate solution: Dissolve sodium alginate in deionized water, stir magnetically at 1200 rpm for 1 hour, then gradually reduce the stirring speed to 500 rpm until it becomes a transparent solution, and prepare a sodium alginate solution with a concentration of 4wt%.

[0070] B, ultrasonic treatment concentration is the graphene oxide suspension of 0.5wt% 15min, then, add in the sodium alginate solution of step A, make graphene oxide and sodium alginate mass ratio be 0.5:10, 2000rpm magnetic stirring 2h, Obtain sodium alginate / graphene oxide dispersion liquid;

[0071] (2) Preparation of uncrosslinked sodium alginate / graphene oxide composite airgel:

[0072] Put the vessel containing the sodium alginate / graphene oxide ...

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Abstract

The invention relates to an oil-water separation type sodium alginate / graphene oxide composite aerogel and a preparation method thereof. The preparation method of the oil-water separation type sodium alginate / graphene oxide composite aerogel comprises the following steps: preparing a sodium alginate / graphene oxide mixed solution, preparing an uncrosslinked sodium alginate / graphene oxide composite aerogel, and preparing the oil-water separation type sodium alginate / graphene oxide composite aerogel. The oil-water separation type sodium alginate / graphene oxide composite aerogel has a highly porous structure, a complete three-dimensional network and a high separation efficiency, has a separation rate of above 99.9%, has high salt resistance, is suitable for being used in high-salinity sea environments, and also has the advantages of good elasticity, high mechanical strength, oil pollution resistance, realization of almost no reduction of the separation efficiency after reuse 40 times or more, and good reuse ability.

Description

technical field [0001] The present invention relates to an oil-water separation type composite airgel and a preparation method thereof, in particular to an oil-water separation type sodium alginate / graphene oxide composite airgel and a preparation method thereof, which has salt resistance, underwater super oleophobicity and The anti-oil pollution performance belongs to the technical field of preparation of biomass-based functional materials. Background technique [0002] In the past few decades, oil spills and chemical spills have occurred frequently, causing great harm to the marine environment and ecosystems. Therefore, how to achieve efficient oil-water separation in the marine environment has become a topic of global concern. Oil-water separation belongs to the field of interfaces, and the development of functional materials with superoleophobic properties is an effective and facile strategy to solve this problem. So far, materials with superoleophobic properties in ai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022B01J13/00C08J9/40C08J9/28C08J3/075C08L5/04
CPCB01D17/0202B01J13/0091C08J3/075C08J9/28C08J9/405C08J2305/04
Inventor 张慧李玉歧卢泽湘郑德勇黄六莲陈礼辉
Owner FUJIAN AGRI & FORESTRY UNIV
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