Electrochemical deposition method for preparing super-hydrophobic and super-oleophilic surface

A super-hydrophobic and electrochemical technology, which is applied to the device for coating liquid on the surface, special surface, liquid chemical plating, etc., can solve the problems of unfavorable industrial production, complicated process, inconvenient operation, etc., and achieves good hydrophobic effect and film The effect of uniform thickness and not easy to fall off

Inactive Publication Date: 2012-03-21
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods are relatively complicated in technology, inconvenie...

Method used

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  • Electrochemical deposition method for preparing super-hydrophobic and super-oleophilic surface
  • Electrochemical deposition method for preparing super-hydrophobic and super-oleophilic surface
  • Electrochemical deposition method for preparing super-hydrophobic and super-oleophilic surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Cleaning of copper or copper alloy sheets: Use absolute ethanol, acetone, 1.0M sodium hydroxide solution, and secondary water to ultrasonically clean the copper or copper alloy substrate, remove the oil on the surface, and dry it.

[0026] (2) Formation of micro-nano structure on the surface of copper or copper alloy sheet: immerse the cleaned copper or copper alloy substrate in 0.01M silver nitrate solution, and react at room temperature for 25 min. After the reaction, the substrate was washed with secondary water and dried with nitrogen.

[0027] (3) Preparation of super-hydrophobic and super-oleophilic surface: immerse the above-mentioned treated copper or copper alloy substrate in an ethanol solution of dodecyl hydroxystearic acid with a mass concentration of 3%, and soak for 30 min at room temperature; after the reaction, The substrate was taken out, cleaned with absolute ethanol, and after drying, the surface water contact angle was measured to be 154°; the oi...

Embodiment 2

[0029] (1) Cleaning of copper or copper alloy substrate: same as in Example 1.

[0030] (2) Formation of micro-nanostructures on the surface of copper or copper alloy sheets: immerse the cleaned copper or copper alloy substrate in 0.01M silver nitrate solution, and react at room temperature for 30 min. After the reaction, the substrate was washed with secondary water and dried with nitrogen.

[0031] (3) Preparation of superhydrophobic and superoleophilic copper or copper alloy surface: immerse the above-mentioned treated copper or copper alloy substrate in an ethanol solution of dodecyl hydroxystearic acid with a mass concentration of 1%, and soak for 1 hour at room temperature; after the reaction , the substrate was taken out, cleaned with absolute ethanol, and after drying, the surface water contact angle was measured to be 156°; the oil droplets spread rapidly, and the oil contact angle was less than 5°.

Embodiment 3

[0033] (1) Cleaning of copper or copper alloy substrate: same as in Example 1.

[0034] (2) Formation of micro-nano structure on the surface of copper or copper alloy sheet: immerse the cleaned copper or copper alloy substrate in 0.01M silver nitrate solution, and react at room temperature for 25 min; after the reaction, the substrate is washed with secondary water , blow dry with nitrogen.

[0035] (3) Preparation of superhydrophobic and superoleophilic copper or copper alloy surface: immerse the above-mentioned treated copper or copper alloy substrate in an ethanol solution of dodecyl hydroxystearic acid with a mass concentration of 1%, and soak for 2 hours at room temperature; After that, the substrate was taken out, cleaned with absolute ethanol, and after drying, the surface water contact angle was measured to be 158°; the oil droplets spread rapidly, and the oil contact angle was close to 0°.

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Abstract

The invention discloses an electrochemical deposition method for preparing a super-hydrophobic and super-oleophilic surface, and belongs to the technical field of function materials. The method comprises the following steps of: forming a micro/nano-structured silver film on the surface of a copper or copper alloy substrate by electrochemical deposition, and modifying by using 12-hydroxy stearic acid to obtain a surface with super-hydrophobicity and super-oleophilicity. The contact angle of the super-hydrophobic and super-oleophilic surface prepared by the method to water is 154 to 159 degrees, the rolling angle of the surface is less than 5 degrees, the contact angle of the surface to oil is 0 to 5 degrees, and the surface has a good hydrophobic effect and a high oleophylic speed; and the film has uniform thickness and is difficult to fall, the property of the film is kept basically unchanged after being placed in air for a long time, and the surface can be used for oil-water separation to purify water in oil, and has a wide application prospect in fields of mining industry, petrochemical industry, environmental protection industry and the like.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and relates to a method for preparing a superhydrophobic and superoleophilic surface on a copper or copper alloy surface, in particular to a method for preparing a superhydrophobic and superoleophilic surface by using an electrochemical deposition method. Background technique [0002] Surface wettability is an important characteristic of solid surfaces, which is mainly determined by the chemical composition and microscopic geometry of the solid surface. In recent years, some surfaces with special wettability, such as superhydrophobicity, superoleophobicity, superhydrophilicity, and superlipophilicity, have been widely and important used in the fields of production, life and basic research. If any two kinds of wettability mentioned above are simultaneously present on the material surface, there will be more potential applications. For example, a surface with both superhydrophobic and...

Claims

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Application Information

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IPC IPC(8): B05D5/04B05D5/08C23C18/42
Inventor 代学玉杨武郭昊王琴琴赵静卓郑艳萍赵菊玲龙世佳
Owner NORTHWEST NORMAL UNIVERSITY
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