Carbon nanotube-loaded carbon paper and its preparation method and application

A technology of carbon nanotubes and carbon paper, which is applied in the field of carbon nanotube-loaded carbon paper and its preparation, can solve the problems of low separation efficiency, poor selectivity, poor cycle stability, etc., achieve high-efficiency separation, improve the firmness of the load, The effect of high-precision separation

Active Publication Date: 2021-08-27
CHINA PETROLEUM & CHEM CORP +2
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Problems solved by technology

[0005] The purpose of the present invention is to provide a carbon nanotube loaded carbon paper and its preparation method and application in order to overcome the problems of low separation efficiency, poor cycle stability and poor selectivity of traditional separation materials. Starting with carbon paper as the substrate, arrayed carbon nanotubes were prepared by in-situ growth method and modified with hydrophobic materials, thus preparing super-hydrophobic and super-oleophilic materials to achieve oil-water separation.

Method used

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  • Carbon nanotube-loaded carbon paper and its preparation method and application
  • Carbon nanotube-loaded carbon paper and its preparation method and application
  • Carbon nanotube-loaded carbon paper and its preparation method and application

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preparation example Construction

[0049] The present invention also provides a preparation method of the above-mentioned carbon nanotube-loaded carbon paper, the method comprising:

[0050] 1) forming a metal catalyst layer on the carbon paper fiber surface of the carbon paper substrate;

[0051] 2) in-situ formation of carbon nanotubes on the carbon paper fibers of the carbon paper substrate by vapor deposition;

[0052] 3) The product obtained in step 2) is covered with a hydrophobic polymer modification layer, and the hydrophobic polymer is selected from one or more of polyvinylpyrrolidone, polydimethylsiloxane and polytetrafluoroethylene.

[0053] According to the present invention, in step 1), the metal catalyst layer is not particularly limited, and may be one or more of existing cobalt-containing hydroxides used for synthesizing carbon nanotubes. As a method of forming the metal catalyst layer, it is preferably formed by hydrothermally reacting carbon paper with a water-soluble metal salt, urea, and am...

Embodiment 1

[0075] (1) Cut the carbon paper into a rectangle of 2cm×4cm (the weight is 6.4g, the same below), and treat both sides of the carbon paper in a 200W plasma cleaning machine for 5min.

[0076] (2) 0.291g cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O), 0.6g urea (CO(NH 2 ) 2 ), 0.093g ammonium fluoride (NH 4 F) Mix it with 30mL deionized water and add it into a 50mL reaction kettle to form a uniform solution. Sonicate until completely dissolved to form a uniform pink solution. Put the treated carbon paper into the reaction kettle and ultrasonicate for 30 minutes, so that the mixed solution completely soaks the carbon paper.

[0077] (3) The reaction kettle was placed in an oven at 120° to react for 24 hours. After the reaction, the reaction kettle was taken out to cool down naturally, and the carbon paper with the cobalt catalyst was taken out. It can be observed that there are pink deposits on the upper and lower sides of the carbon paper, wherein the upper layer is phy...

Embodiment 2

[0084] (1) Cut the carbon paper into a rectangle of 2cm×4cm, and treat both sides of the carbon paper for 5 minutes in a plasma cleaning machine with a power of 200W.

[0085] (2) Mix 0.582g of cobalt nitrate hexahydrate, 1.200g of urea, 0.233g of ammonium fluoride and 30mL of deionized water into a 50mL reactor to form a homogeneous solution, and ultrasonicate until completely dissolved to form a uniform pink solution. Put the treated carbon paper into the reaction kettle and ultrasonicate for 30 minutes, so that the mixed solution completely soaks the carbon paper.

[0086] (3) The reaction kettle was placed in an oven at 120° for hydrothermal reaction for 12 hours. After the reaction, the reaction kettle was taken out to cool down naturally, and the carbon paper with the cobalt catalyst was taken out, the surface of the carbon paper was cleaned with deionized water, and then placed in a vacuum drying oven at 60°C for 30 min.

[0087] (4) Place the carbon paper obtained in ...

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Abstract

The invention relates to the field of separation materials, and discloses a carbon nanotube-loaded carbon paper, a preparation method and application thereof. The carbon nanotube-loaded carbon paper of the present invention comprises a carbon paper substrate, carbon nanotubes formed in situ on the carbon paper fibers of the carbon paper substrate, and a hydrophobic polymer modification layer coated on the outside of the carbon nanotubes, The hydrophobic polymer is selected from one or more of polyvinylpyrrolidone, polydimethylsiloxane and polytetrafluoroethylene. The carbon nanotube-loaded carbon paper of the present invention has special wettability of superhydrophobic-superoleophilic, thereby realizing large flux and high-efficiency separation of oil-water mixed solution, and is very suitable for use as a separation membrane material.

Description

technical field [0001] The invention relates to the field of separation materials, in particular to a carbon nanotube-loaded carbon paper and its preparation method and application. Background technique [0002] The exploitation and transportation of petroleum resources are becoming more and more frequent, and the resulting oil spill accidents and pollution are becoming more and more serious, which brings great harm to the ecological environment. For example, accidents such as the "Exxon Valdez" oil tanker leak and the crude oil spill in the US Gulf of Mexico caused losses of tens of billions of dollars; the oil spill at the Dalian Xingang oil tank area and the oil spill at the Penglai Oilfield caused serious damage to the marine ecological environment. pollution damages, and the losses amount to billions of RMB. [0003] After an oil spill incident, the rapid disposal of oil spill is an important way to reduce disasters; and the use of adsorbent materials to absorb, recove...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022
CPCB01D17/0202
Inventor 赵宇鑫刘全桢孙晓明武川刘欢高鑫张健中王林
Owner CHINA PETROLEUM & CHEM CORP
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