Method for preparing efficient air water-collecting copper surface by virtue of gradient anodic oxidation method

An anodic oxidation method and high-efficiency air technology, applied in the field of interface chemistry, can solve the problems of scarcity of fresh water and low water collection efficiency, and achieve the effects of improved water collection efficiency, low product cost, and short preparation cycle

Active Publication Date: 2016-07-13
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Air water intake technology provides a new idea to solve the problem of fresh water scarcity. However, although the traditional air water intake technology can achieve a certain water intake effect, its low water collection efficiency has become a bottleneck for its promotion.

Method used

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  • Method for preparing efficient air water-collecting copper surface by virtue of gradient anodic oxidation method
  • Method for preparing efficient air water-collecting copper surface by virtue of gradient anodic oxidation method
  • Method for preparing efficient air water-collecting copper surface by virtue of gradient anodic oxidation method

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Embodiment 1

[0033] This embodiment provides a gradient anodic oxidation method to prepare a gradient-wettable hydrophilic-hydrophobic interphase copper surface with a relatively large hydrophilic region area ratio. The specific steps are:

[0034] The first step, the preparation of electrolyte:

[0035] Weigh 1g of sodium hydroxide particles, dissolve in 500g of deionized water, and stir until completely dissolved.

[0036] The second step, target sample surface pretreatment:

[0037] Cut the copper sheet into a rectangle with a length of 3.5cm and a width of 1.5cm, soak it in dilute hydrochloric acid for 15 minutes, then ultrasonically clean it with ethanol and water for 20 minutes, and dry it in a drying oven at 70°C for 10 minutes stand-by.

[0038] The third step is to prepare gradient wettable hydrophilic-hydrophobic interphase surface by anodic oxidation method:

[0039] First, one side of the target sample is closely attached to the insulating porous mask. The hole diameter of t...

Embodiment 2

[0043] This embodiment provides a method for preparing a gradient-wettable hydrophilic-hydrophobic interphase copper surface with a smaller hydrophilic region area ratio by gradient anodic oxidation. The specific steps are:

[0044] The first step, the preparation of electrolyte:

[0045] Weigh 1g of sodium hydroxide particles, dissolve in 500g of deionized water, and stir until completely dissolved.

[0046] The second step, target sample surface pretreatment:

[0047] Cut the copper sheet into a rectangle with a length of 3.5cm and a width of 1.5cm, soak it in dilute hydrochloric acid for 15 minutes, then ultrasonically clean it with ethanol and water for 20 minutes, and dry it in a drying oven at 70°C for 10 minutes stand-by.

[0048] The third step is to prepare gradient wettable hydrophilic-hydrophobic interphase surface by anodic oxidation method:

[0049] First, one side of the target sample is closely attached to the insulating porous mask. The hole diameter of the ...

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Abstract

The invention discloses a method for preparing an efficient air water-collecting copper surface by virtue of a gradient anodic oxidation method, and belongs to the technical field of interface chemistry. According to the method, a porous mask is combined with a gradient anodic oxidation treatment technology to perform treatment on the surface of a target sample, so that the preparation of a hydrophilic-hydrophobic alternate surface with a unidirectional invasive gradient can be realized. According to the method disclosed by the invention, by using the inherent invasion and electrical conductivity of a copper surface, combining the porous mask with the gradient anodic oxidation treatment technology, and taking a measure of improving the water collecting efficiency by using a desert beetle-like hydrophilic-hydrophobic alternate surface as a theoretical basis, a variety of hydrophilic-hydrophobic alternate copper surfaces with different area ratios of hydrophilic/hydrophobic regions are prepared, and a unidirectional invasive gradient is innovatively introduced to the hydrophilic-hydrophobic alternate copper surfaces, thereby solving the technical problem of quickly reconstructing a water-collecting copper surface, and realizing improvement of the water collecting efficiency of the copper surface.

Description

technical field [0001] The invention belongs to the technical field of interface chemistry, and in particular relates to a method for preparing a high-efficiency air water-collecting copper surface by a gradient anodic oxidation method. Background technique [0002] While the development of science and technology has brought many conveniences to people, it has also brought serious environmental problems to people, especially water pollution and land desertification. The serious shortage of fresh water resources has become a global problem. Therefore, how to obtain fresh water resources has become a hot topic. Air water intake technology provides a new idea to solve the problem of fresh water scarcity. However, although the traditional air water intake technology can achieve a certain water intake effect, its low water collection efficiency has become a bottleneck for its promotion. Through the study and imitation of the water-collecting properties of biological surfaces in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/34
CPCC25D11/34
Inventor 侯永平尚维锋
Owner BEIHANG UNIV
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