A method for preparing superhydrophobic/lipophilic oil-water separation membrane by one-step electrodeposition
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
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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. Use acetone, ethanol and deionized water to clean it ultrasonically for 15 minutes to remove the oil on the surface of the metal mesh and copper sheet. Put the metal mesh into 4mol / L hydrochloric acid to chemically polish it for 5 minutes, 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 was added with a concentration of 2ml / L, and then 0.1g of dopamine was added under stirring to obtain an electrolyte. Finally, put the pretreated metal mesh substrate and copper sheet into the electrodeposition device as cathode and anode respectively, and ultrasonically deposit at a frequency of 60Hz for 10min at a current density of 0.04A. The substrate was taken out and the residual solution on the surface was ...
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, and use acetone, ethanol, and deionized water to clean it ultrasonically for 15 minutes to remove the oil on the surface of the metal mesh and copper sheet, and then Put the metal mesh into 6mol / L sulfuric acid to chemically polish it for 8 minutes, then take it out, rinse it with deionized water and dry it for later use. Then 0.6575g of nickel sulfate was added to 40ml of deionized water, and after dissolving, 10ml of ethanol solution with a concentration of 6ml / L cetyl mercaptan was added, and then 0.08g of dopamine was added under stirring to obtain an electrolyte. Finally, put the pretreated metal mesh substrate and copper sheet into the electrodeposition device as cathode and anode respectively, and ultrasonically deposit at a frequency of 50 Hz for 15 min at a current density of 0.01 A. Take out the substrate, rinse the residual solution on the surface with a...
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. Use acetone, ethanol and deionized water to clean it ultrasonically for 15 minutes to remove the oil on the surface of the metal mesh and copper sheet. Then put the metal mesh into 8mol / L hydrochloric acid to chemically polish it 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 ethanol solution with a concentration of 10ml / L tetradecyl mercaptan was added, and then 0.1g of dopamine was added under stirring to obtain an electrolyte. Finally, put the pretreated metal mesh substrate and copper sheet into the electrodeposition device as cathode and anode respectively, and ultrasonically deposit at a frequency of 60 Hz for 10 min at a current density of 0.2 A. Take out the substrate, wash the residual solution on the surfa...
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