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Method for preparing Janus foamy copper with asymmetric wettability and efficient mist collection ability

A foamed copper and wettability technology is applied in the field of Janus material preparation, which can solve the problems of low practicability, complicated preparation steps of Janus materials, and fluorine-containing preparation materials, and achieves the effects of low cost, good high temperature resistance, and easy availability of raw materials.

Inactive Publication Date: 2020-01-07
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple, convenient, and industrially produced Janus copper foam preparation method with a hydrophobic / superhydrophilic asymmetric wettability surface, which solves the complex preparation steps of Janus materials, and the preparation materials contain fluorine. The problem of low material and practicality

Method used

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  • Method for preparing Janus foamy copper with asymmetric wettability and efficient mist collection ability
  • Method for preparing Janus foamy copper with asymmetric wettability and efficient mist collection ability
  • Method for preparing Janus foamy copper with asymmetric wettability and efficient mist collection ability

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Embodiment 1

[0027] 1. Prepare copper hydroxide nanowires on copper foam: cut the copper foam into 3*3cm 2 slices. First, in order to remove the pollutants on the copper foam surface, ultrasonic cleaning was performed with acetone, ethanol, and deionized water for 5 min, and then the oxide layer was removed with 0.1M hydrochloric acid solution. The treated foamed copper was etched in a mixed aqueous solution of 1M sodium hydroxide and 0.05M ammonium persulfate for 40 minutes, washed with deionized water and dried in a vacuum oven for 40 minutes to obtain a surface covered with copper hydroxide nanowires.

[0028]2. Grow ZnO nanorods on copper hydroxide nanowires: Soak the etched copper foam in 0.15M zinc acetate solution for 15s, take it out and dry it for 5min, rinse with ethanol, repeat the above steps 5 times and put it in 300℃ Inject seeds in a high temperature muffle furnace. After seed injection, the foamed copper is immersed in a mixed aqueous solution of 0.025M zinc nitrate and 0...

Embodiment 2

[0032] 1. Prepare copper hydroxide nanowires on copper foam: cut the copper foam into 3*3cm 2 slices. First, in order to remove the pollutants on the copper foam surface, ultrasonic cleaning was performed with acetone, ethanol, and deionized water for 5 min, and then the oxide layer was removed with 0.1M hydrochloric acid solution. The treated foamed copper was etched in a mixed aqueous solution of 1M sodium hydroxide and 0.05M ammonium persulfate for 40 minutes, washed with deionized water and dried in a vacuum oven for 40 minutes to obtain a surface covered with copper hydroxide nanowires.

[0033] 2. Grow ZnO nanorods on copper hydroxide nanowires: Soak the etched copper foam in 0.15M zinc acetate solution for 15s, take it out and dry it for 5min, rinse with ethanol, repeat the above steps 5 times and put it in 300℃ Inject seeds in a high temperature muffle furnace. After seed injection, the foamed copper is immersed in a mixed aqueous solution of 0.025M zinc nitrate and ...

Embodiment 3

[0037] 1. Prepare copper hydroxide nanowires on copper foam: cut the copper foam into 3*3cm 2 slices. First, in order to remove the pollutants on the copper foam surface, ultrasonic cleaning was performed with acetone, ethanol, and deionized water for 5 min, and then the oxide layer was removed with 0.1M hydrochloric acid solution. The treated foamed copper was etched in a mixed aqueous solution of 1M sodium hydroxide and 0.05M ammonium persulfate for 40 minutes, washed with deionized water and dried in a vacuum oven for 40 minutes to obtain a surface covered with copper hydroxide nanowires.

[0038] 2. Grow ZnO nanorods on copper hydroxide nanowires: Soak the etched copper foam in 0.15M zinc acetate solution for 15s, take it out and dry it for 5min, rinse with ethanol, repeat the above steps 5 times and put it in 300℃ Inject seeds in a high temperature muffle furnace. After seed injection, the foamed copper is immersed in a mixed aqueous solution of 0.025M zinc nitrate and ...

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Abstract

The invention relates to a method for preparing Janus foamy copper with asymmetric wettability and efficient mist collection ability. The method for preparing the Janus foamy copper with asymmetric wettability and efficient mist collection ability comprises the steps such as preparing of copper hydroxide nanowires, copper oxide nanowires, zinc oxide nanorods and grafting of polydimethylsiloxane (PDMS). The surface of the Janus foamy copper with the micro-nano structure exhibits unique asymmetric wettability (one surface is hydrophobic, and the other surface is super-hydrophilic) at room temperature, has stable asymmetric wettability after long-term storage. The Janus foamy copper with asymmetric wettability has good mist collection ability, and has efficient water mist collection rate under different tilt angles. Compared with original foamy copper, water mist collection quality is improved about 209%. Compared with the prepared single super-hydrophilic and super-hydrophobic foamy copper, more efficient water mist collection ability is achieved, and the method for preparing the Janus foamy copper with asymmetric wettability and efficient mist collection ability can be promoted on alarge scale.

Description

technical field [0001] The invention belongs to the technical field of Janus material preparation, and in particular relates to a preparation method of Janus foamed copper with asymmetric wettability and high-efficiency mist collection ability. Background technique [0002] Janus material, named after the double-faced god in ancient Roman mythology, acts as a barrier between two substances and has become a material with potential industrial uses. However, creating two distinct "faces" on these delicate surfaces was a challenging process. Janus nanomaterials are fundamentally characterized by well-defined compartmentalized chemistry and functionality in their microscale space. The key issue lies in the development of new methods to precisely control the morphology, microstructure, surface chemistry and strict partitioning of functions. In recent years, with the advancement of Janus nanomaterial preparation and modification technology, Janus membrane materials have become an...

Claims

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Application Information

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IPC IPC(8): C23C22/63C23C18/12C23C28/04B05D5/08B05D3/06B82Y30/00B82Y40/00
CPCC23C22/63C23C18/1216C23C28/04B05D5/08B05D3/065B82Y30/00B82Y40/00
Inventor 郭志光周慧
Owner HUBEI UNIV
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