One-step anodic oxidation preparation process of inorganic flexible super-hydrophobic super-oleophylic copper net

A technology of anodic oxidation and preparation process, which is applied in the direction of chemical instruments and methods, membrane, semi-permeable membrane separation, etc. It can solve the problems of complex preparation method of CuS and inability to achieve extreme modification state in one step, so as to achieve good industrial application prospects and high efficiency of oil and water Separation performance, the effect of simple preparation method

Active Publication Date: 2021-01-12
NORTHWEST NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, copper sulfide is also an ideal material for preparing extremely wet surfaces. However, the current mainstream preparation method of CuS is relatively complicated, and it cannot achieve the extreme modification state in one step, and the surface modification of organic matter is still required in the later stage.

Method used

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  • One-step anodic oxidation preparation process of inorganic flexible super-hydrophobic super-oleophylic copper net
  • One-step anodic oxidation preparation process of inorganic flexible super-hydrophobic super-oleophylic copper net
  • One-step anodic oxidation preparation process of inorganic flexible super-hydrophobic super-oleophylic copper net

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Embodiment 1

[0029] At room temperature, 60.045g of sodium sulfide nonahydrate (Na 2 S·9H 2 O) Add to 500mL water (H 2 O) in a weighing bottle, and fully stirred, after the sodium sulfide is completely dissolved, put the prepared solution in an environment of less than 4°C and refrigerate it, and use it as the electrolyte in the anodizing process. The cut copper grids were ultrasonically cleaned with acetone ethanol deionized water for 20 min, and further cleaned in HNO 3 and H 2 The copper mesh was ultrasonically polished in a mixture of O (volume ratio 3:1). The polished copper mesh is anodized, the copper mesh is used as the anode, the graphite sheet is used as the cathode, and the electrolyte is Na 2 S (0.5mol / L) solution, the anodizing time is 2min, and the current is 5mA. The anodized sample was washed repeatedly with deionized water and dried, and then the sample was annealed in air at a temperature of 200 °C for two hours. The sample was placed in the air at room temperature ...

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Abstract

The invention discloses a one-step anodic oxidation preparation process of an inorganic flexible super-hydrophobic super-oleophylic copper mesh, which comprises the following steps: cutting a copper mesh, sequentially carrying out ultrasonic cleaning in acetone, ethanol and deionized water for 20 minutes, and carrying out ultrasonic polishing treatment in a mixed solution of HNO3 and H2O for 5 minutes; and putting the copper mesh subjected to ultrasonic polishing treatment as an anode and a graphite flake as a cathode into a prepared 0.5 mol/L Na2S electrolyte, carrying out anodic oxidation treatment at a constant temperature of 0 DEG C for 2 minutes, repeatedly washing and blow-drying a sample with deionized water, carrying out annealing treatment at 200 DEG C in an air atmosphere for 2 hours, and putting the sample into room-temperature air for 6 days. The preparation method is simple, low in cost and good in controllability, large-scale industrial production can be achieved, stableextreme wettability can be directly obtained without organic matter modification, very high durability and friction resistance are achieved, and efficient oil-water separation performance is shown.

Description

technical field [0001] The invention relates to the field of nano-material preparation, in particular to a one-step anodic oxidation preparation process of an inorganic flexible super-hydrophobic and super-oleophilic copper mesh. Background technique [0002] As a macroscopic representation of the interaction between liquids and solids, wettability is a key property of solid surfaces for both theoretical research and practical applications. It is mainly determined by the chemical composition of the solid surface and the surface micro-nano structure, and it is also stimulated by the external environment to cause responsive wetting. It has demonstrated great application value in self-cleaning, oil-water separation, anti-icing and anti-fog, anti-corrosion, antibacterial, etc. In terms of oil-water separation applications, copper mesh has become one of the main substrates for oil-water separation due to its excellent electrical conductivity, thermal conductivity, ductility, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/02B01D71/02B01D17/00
CPCB01D69/02B01D71/02B01D17/085B01D2325/38
Inventor 王建刘树李燕陈建彪王成伟
Owner NORTHWEST NORMAL UNIVERSITY
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