Method of producing super-hydrophobic/oleophylic oil-water separation mesh membrane through one-step electro-deposition

A super-hydrophobic, electrodeposition technology, applied in the direction of semi-permeable membrane separation, chemical instruments and methods, membranes, etc., can solve the problems of expensive processing equipment, complicated operation process, harsh preparation conditions, etc., and achieve the goal of being suitable for large-scale applications and The effect of simple promotion and process preparation

Inactive Publication Date: 2017-07-14
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing preparation technology cannot be popularized and applied on a large scale due to the spe...

Method used

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  • Method of producing super-hydrophobic/oleophylic oil-water separation mesh membrane through one-step electro-deposition
  • Method of producing super-hydrophobic/oleophylic oil-water separation mesh membrane through one-step electro-deposition

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Cut the 200-mesh 304 stainless steel mesh into a size of 5cm×4cm, and cut the copper sheet into a size of 5cm×4cm×0.1cm, respectively, ultrasonically clean with acetone, ethanol and deionized water for 15 minutes to remove the oil stains on the surface of the metal mesh and copper sheet. Then put the metal mesh into 4mol / L hydrochloric acid for chemical polishing for 5min, then take it out, rinse it with deionized water, and dry it for later use. Then 2.6285g of nickel sulfate was added to 75ml of deionized water, and after dissolving, 25ml of n-dodecanethiol ethanol solution with a concentration of 2ml / L was added, and then 0.1g of dopamine was added under stirring to obtain an electrolyte solution. Finally, the pretreated metal mesh substrate and copper sheet were placed in an electrodeposition device as cathode and anode, respectively, and ultrasonically deposited at a frequency of 60 Hz for 10 min at a current density of 0.04 A. The substrate was taken out and the r...

Embodiment 2

[0021] Cut the 80-mesh copper mesh into a size of 5cm×4cm, and cut the copper sheet into a size of 5cm×4cm×0.1cm. Use acetone, ethanol and deionized water for ultrasonic cleaning for 15 minutes to remove the oil stains on the surface of the metal mesh and the copper sheet. The metal mesh was chemically polished in 6 mol / L sulfuric acid for 8 min, then taken out, rinsed with deionized water, and dried for later use. Then, 0.6575g of nickel sulfate was added to 40ml of deionized water, and after dissolving, 10ml of hexadecanethiol ethanol solution with a concentration of 6ml / L was added, and then 0.08g of dopamine was added under stirring to obtain an electrolyte solution. Finally, the pretreated metal mesh substrate and copper sheet were placed in an electrodeposition device as cathode and anode, respectively, and ultrasonically deposited at a frequency of 50 Hz for 15 min at a current density of 0.01 A. The substrate was taken out and the residual solution on the surface was r...

Embodiment 3

[0023] Cut the 400-mesh 304 stainless steel mesh into a size of 5cm×4cm, and cut the copper sheet into a size of 5cm×4cm×0.1cm, and ultrasonically clean with acetone, ethanol and deionized water for 15min respectively to remove the oil stains on the surface of the metal mesh and the copper sheet. Then put the metal mesh into 8mol / L hydrochloric acid for chemical polishing for 10min, then take it out, rinse it with deionized water, and dry it for later use. Then, 0.4754g of nickel chloride was added to 50ml of deionized water, and after dissolving, 10ml of 10ml / L tetradecanethiol ethanol solution was added, and then 0.1g of dopamine was added under stirring to obtain an electrolyte solution. Finally, the pretreated metal mesh substrate and copper sheet were put into an electrodeposition device as cathode and anode, respectively, and ultrasonically deposited at a frequency of 60 Hz for 10 min at a current density of 0.2 A. The substrate was taken out and the residual solution on...

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Abstract

The invention belongs to the technical field of material preparation and particularly provides a method of producing a super-hydrophobic/oleophylic oil-water separation mesh membrane through one-step electro-deposition. The method includes the steps of: employing pretreated copper sheet and metal mesh respectively as an anode and a cathode; under a constant current being 0.05-1 A/dm<2>, performing ultrasonic electro-deposition for 1-30 min to produce the super-hydrophobic/oleophylic oil-water separation mesh membrane on the cathode, wherein an electrolyte is prepared by adding a certain amount of dopamine to a mixture solution containing a nickel ion water solution and a long-chain alkyl mercaptan ethanol solution. The method is simple in technology and is free of subsequent surface modification. The super-hydrophobic/oleophylic mesh membrane has excellent pH stability and high oil-water separation efficiency and is suitable for application and promotion at large scale. The invention provides an acceptable method for large-area quick preparation of oil-water separation mesh membranes.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a method for preparing a superhydrophobic / lipophilic oil-water separation omentum by one-step electrodeposition. Background technique [0002] In recent years, a large number of industrial oily wastewater and the increasingly frequent crude oil spills have made oil-water separation a hot issue closely related to chemical production and environmental protection. Therefore, various materials with oil-water separation capability have been extensively researched and developed, especially Materials with special wettability interface provide an effective way to solve the problem of oil-water separation. Among many special wettability functional materials, sponges and foams are widely used for oil-water separation due to their light weight, good elasticity and porosity. However, due to the saturation of oil absorption, these materials have limited adsorption capacity. Th...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D69/02
CPCB01D69/02B01D71/022B01D2323/35B01D2325/38
Inventor 张延宗向美苏赖敏李长欣刘燕王莉淋沈飞杨刚张小洪邓仕槐
Owner SICHUAN AGRI UNIV
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