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Super-hydrophobic/super-oleophilicity copper wire mesh for oil and water separation and preparation method and application thereof

An oil-water separation and super-hydrophobic technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve problems such as environmental pollution, harsh reaction conditions, and cumbersome processes, and achieve low cost, simple preparation process, and high separation efficiency effect

Active Publication Date: 2016-05-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can prepare materials for oil-water separation without using fluorine-containing substances, these methods will use strong acidic, strong alkaline or strong oxidizing reagents in the preparation process, which will cause environmental pollution problems, while the reaction conditions are harsh and the process is cumbersome

Method used

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  • Super-hydrophobic/super-oleophilicity copper wire mesh for oil and water separation and preparation method and application thereof
  • Super-hydrophobic/super-oleophilicity copper wire mesh for oil and water separation and preparation method and application thereof
  • Super-hydrophobic/super-oleophilicity copper wire mesh for oil and water separation and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] 300-mesh phosphorus copper mesh (size 3cm×3cm) was used respectively with 1mol·L ‐1 Ultrasonic cleaning with dilute hydrochloric acid, absolute ethanol and deionized water for about 10 minutes, and drying with nitrogen for later use; prepare 1mol L ‐1 Copper sulfate solution and 1mol L ‐1 Sodium thiosulfate solution, in parts by volume, mixes 20 parts of copper sulfate solution and 10 parts of sodium thiosulfate solution respectively, and dilutes with 70 parts of deionized water to obtain chemical deposition solution; the cleaned 300 mesh phosphor copper The grid was placed in the deposition solution at 50°C; after 30 minutes, the copper grid was taken out, washed with deionized water, dried in the air, and finally the dried copper grid was soaked in hydroxyl-terminated polydimethylsiloxane and methyl tributyl ketone Put in the mixed solution of chloroform of oxime-based silane curing agent for 2 hours, take it out and heat it at 80°C for 2 hours to obtain a superhydro...

Embodiment 2

[0047] A 200-mesh brass mesh (3cm×3cm in size) was mixed with 1mol·L ‐1 Ultrasonic cleaning with dilute hydrochloric acid, absolute ethanol and deionized water for about 10 minutes, and drying with nitrogen for later use; prepare 2mol L ‐1 Copper sulfate solution and 1mol L ‐1 Sodium thiosulfate solution, in parts by volume, mixed with 5 parts of copper sulfate solution and 10 parts of sodium thiosulfate solution, and diluted with 85 parts of deionized water to obtain chemical deposition solution; the cleaned 200 mesh brass The grid was placed in the deposition solution at 50°C; after 30 minutes, the copper grid was taken out, washed with deionized water, dried in the air, and finally the dried copper grid was soaked in hydroxyl-terminated polydimethylsiloxane and methyl tributyl ketone Put in the mixed solution of n-hexane of oxime-based silane curing agent for 2 hours, take it out and heat it at 60°C for 4 hours to obtain a super-hydrophobic / super-oleophilic copper mesh for...

Embodiment 3

[0049] A 100-mesh red copper mesh (3cm×3cm in size) was used with 2mol·L ‐1 Ultrasonic cleaning with dilute hydrochloric acid, absolute ethanol and deionized water for about 10 minutes, and drying with nitrogen for later use; prepare 5mol L ‐1 Copper sulfate solution and 3mol L ‐1 Sodium thiosulfate solution, in parts by volume, mixes 10 parts of copper sulfate solution and 10 parts of sodium thiosulfate solution respectively, and dilutes with 80 parts of deionized water to obtain chemical deposition solution; the cleaned 100-mesh copper net Place in a deposition solution at 50°C; after 10 minutes, take out the copper grid, wash it with deionized water, and dry it in the air. Finally, soak the dried copper grid in hydroxyl-terminated polydimethylsiloxane and methyl tributanone oxime The toluene solution of base silane curing agent for 2 hours, took it out and heated it at 80°C for 3 hours to obtain a superhydrophobic / superoleophilic copper mesh for oil-water separation. Wher...

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Abstract

The invention discloses a super-hydrophobic / super-oleophilicity copper wire mesh for oil and water separation and a preparation method and application thereof. The preparation method comprises the steps that firstly, the copper wire mesh is ultrasonically cleaned through diluted hydrochloric acid, absolute ethyl alcohol and deionized water respectively and dried through nitrogen; chemical deposition liquid of copper sulfate and a sodium thiosulfate solution is prepared; the cleaned copper wire mesh is placed into the chemical deposition liquid for a deposition reaction; the copper wire mesh is taken out and cleaned through the deionized water and dried in the air; the dried copper wire mesh is placed in a solution of a curing agent and polydimethylsiloxane with hydroxyl sealed end, and the copper wire mesh is taken out and heated. No expensive fluorine-containing substance is needed, the copper wire mesh has the advantages that the preparation technology is simple, reaction conditions are mild, no strong acidity or strong basicity or corrosivity reagents are needed, and no harm is caused to the environment, separation of oily wastewater can be achieved rapidly and efficiently, the good separation effect on chloroform, normal hexane, petroleum ether, plant oil, diesel oil, aviation kerosene and the like is achieved, and separation of strong acidity, strong basicity and high salinity oily wastewater can be achieved.

Description

technical field [0001] The invention relates to a superhydrophobic / superoleophilic material, in particular to a superhydrophobic / superoleophilic copper mesh for oil-water separation and a preparation method thereof, belonging to the field of superhydrophobic materials. Background technique [0002] With the massive discharge of domestic oily sewage, industrial oily wastewater and the continuous occurrence of marine oil spill accidents, serious environmental pollution problems have been caused. At the same time, the government has gradually increased the supervision of oily sewage discharge. Ability puts forward higher requirements. [0003] In recent years, in the field of oil-water separation, surfaces with superhydrophobic / superoleophilic properties have attracted extensive research interest. After contacting the surface, oil-water mixtures can spontaneously allow oil to pass through, while water does not pass through at all, thus achieving fast and efficient separation. ...

Claims

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Application Information

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IPC IPC(8): B01D17/022
CPCB01D17/02
Inventor 皮丕辉侯昆李贵东文秀芳徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
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