A kind of graphene-based oil-water separation foam material and its preparation method and application

A foam material and olefin-based oil technology, applied in the field of graphene-based oil-water separation foam material and its preparation, can solve the problems of complex operation, low efficiency, secondary pollution, etc., achieve high recovery efficiency, reduce manufacturing costs, and achieve continuous The effect of efficient recycling

Active Publication Date: 2020-11-06
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is complicated to operate and has low efficiency, and the enriched pollutants need to be collected and processed
[0009] Patent CN 105399193 A reports a method for degrading heavy non-aqueous liquid component compound chlorinated hydrocarbon pollution in groundwater. The mixed solution of sodium persulfate and sodium hydroxide is added to the water body containing compound chlorinated hydrocarbon pollutants for degradation Repair, this method belongs to the category of chemical repair requires the use of a large amount of chemical agents, and is prone to secondary pollution
[0010] Patent 200680052554.X reports a method and equipment for remediating polluted land. This method first determines the location of the subsurface non-aqueous phase liquid (NAPL), and then removes pollutants through oxygen-supplied combustion. This method removes pollutants through combustion, often will cause secondary pollution

Method used

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  • A kind of graphene-based oil-water separation foam material and its preparation method and application
  • A kind of graphene-based oil-water separation foam material and its preparation method and application
  • A kind of graphene-based oil-water separation foam material and its preparation method and application

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Effect test

Embodiment 1

[0064] A preparation method of a graphene-based oil-water separation foam material, the specific steps are as follows:

[0065] 1) Soak melamine foam with a size of 3cm×3cm×3cm in a graphene oxide aqueous solution with a concentration of 0.5mg / mL for 1 hour, take it out, and dry it in an oven at 60°C for 5 hours;

[0066] 2) Soak the material obtained in step 1) in a n-hexane solution with a volume fraction of 0.1% methyltrichlorosilane for 2 minutes, take it out and dry it at 35 degrees Celsius for 1 hour to obtain a graphene-based oil-water separation foam material.

[0067] The above-mentioned graphene-based oil-water separation foam material was characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Raman spectroscopy, etc., as shown in Figures 1-4.

[0068] like Figure 1a , Figure 1b , Figure 1c and Figure 1d As shown in the scanning electron microscope image, the foam material skeleton prepared in this embodiment grow...

Embodiment 2

[0074] A preparation method of a graphene-based oil-water separation foam material, the specific steps are as follows:

[0075] 1) Soak a polyurethane foam with a size of 3cm×3cm×3cm in a graphene oxide aqueous solution with a concentration of 1mg / mL for 1 hour, take it out and squeeze it twice to remove most of the moisture absorbed in the foam. Oven drying for 5h;

[0076] 2) Soak the material obtained in step 1) in an acetone solution with a volume fraction of 0.2% methyltrichlorosilane for 2 minutes, take it out and dry it at 25°C for 1 hour to obtain a graphene-based oil-water separation foam material.

[0077] The contact angle of the graphene-based oil-water separation foam material is 148 degrees; its adsorption capacity to different types of oil products, such as Image 6 shown.

Embodiment 3

[0079] A preparation method of a graphene-based oil-water separation foam material, the specific steps are as follows:

[0080] (1) Soak polyvinyl alcohol foam with a size of 3cm×3cm×3cm in a graphene oxide aqueous solution with a concentration of 0.1mg / mL for 1 hour, take it out, and dry it in an oven at 50°C for 8 hours;

[0081] (2) Soak the material obtained in step (1) in n-hexane solution of octadecyltrichlorosilane with a volume fraction of 0.1% for 10 minutes, take it out and dry it at 25°C for 3 hours to obtain graphene-based oil-water separation foam material.

[0082] The contact angle of the graphene-based oil-water separation foam material is 128 degrees; its adsorption capacity for different types of oil products, such as Figure 7 shown.

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Abstract

The invention discloses a graphene-based oil-water separation foam material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) impregnating a porous foam material in a graphene aqueous solution, taking out the foam material and drying; (2) impregnating the material obtained in the step (1) in an organic solvent containing organohalosilane, taking out and drying the material, thereby obtaining the graphene-based oil-water separation foam material. According to the preparation method disclosed by the invention, the porous foam material is sequentially impregnated in the graphene oxide aqueous solution and the organic solvent containing organohalosilane, the obtained graphene-based oil-water separation foam material can selectively adsorb and enrich floating oil on the water surface, and the recovery efficiency of the oil and organic pollutants is high. A floating oil collection device, an LNAPL (Light Non-Aqueous Phase Liquid) in-situ extraction device and a DNAPL (Dense Non-aqueous Phase Liquid) in-situ extraction device with simple structures are prepared by utilizing the graphene-based oil-water separation foam material, and the effect of recycling the oil and organic pollutants is effectively improved.

Description

technical field [0001] The invention relates to the technical fields of environmental protection and oil recovery, in particular to a graphene-based oil-water separation foam material and its preparation method and application. Background technique [0002] With the development of the economy, the demand for oil products in daily life and industrial production is increasing, and various oil products with different components and chemical compositions are widely produced, transported and used. In the above process, oil spills (including crude oil spills, organic solvent leaks, etc.) have become more and more frequent, causing huge damage to the natural environment and even triggering public emergencies in local areas. [0003] At present, reports on porous media as oil-absorbing materials are mainly concentrated in the field of oil adsorption, such as the American Chemical Society "ACS Nano" (Zhu, Q.; Pan, Q., Mussel-Inspired Direct Immobilization of Nanoparticles and Applica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/28B01J20/32B09C1/00C02F1/28B01D17/022C02F101/30C02F103/06
Inventor 何锋万武波张艳
Owner ZHEJIANG UNIV OF TECH
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