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Needle-like copper hydroxide material based on copper grid, preparation method and oil-water separating method

A technology of copper hydroxide and sodium hydroxide, applied in the direction of copper oxide/copper hydroxide, immiscible liquid separation, metal material coating process, etc., can solve the problems of expensive, large-scale equipment, power consumption, etc., and achieve easy operation , avoid environmental pollution, the effect of simple process

Pending Publication Date: 2018-05-29
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce f 1 , people have designed and prepared a solid rough surface with a pointed structure, and there are many methods used, such as: laser etching, electrochemical method, hydrothermal method, etc., but these methods have their own shortcomings, some Requires expensive large-scale equipment, and some need to consume energy such as electricity

Method used

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  • Needle-like copper hydroxide material based on copper grid, preparation method and oil-water separating method
  • Needle-like copper hydroxide material based on copper grid, preparation method and oil-water separating method
  • Needle-like copper hydroxide material based on copper grid, preparation method and oil-water separating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Prepare superhydrophobic acicular copper hydroxide on the surface of copper mesh, the specific steps are as follows:

[0044] (1) Polish the copper mesh (the mesh number of the copper mesh is 100 mesh, the copper mesh material is pure copper, the purity is 98%) with sandpaper to remove part of the oxide layer on the surface, ultrasonic cleaning in absolute ethanol and deionized water for 5 minutes respectively, nitrogen gas Blow dry and set aside.

[0045] (2) Put the copper mesh treated in step (1) into the mixed solution 1 of sodium hydroxide and ammonium persulfate at 24°C (the concentration of sodium hydroxide solution is 2.5mol L -1 , the concentration of ammonium persulfate solution is 0.05mol L -1 ) for 45 minutes; then put it into the mixed solution 1 diluted 10 times to react for 60 minutes; then put it into deionized water and react for 60 minutes.

[0046] (3) Rinse the sample obtained in step (2) with deionized water, blow dry with nitrogen, and obtain nee...

Embodiment 2

[0052] Prepare superhydrophobic acicular copper hydroxide on the surface of copper mesh, the specific steps are as follows:

[0053] (1) Wipe off part of the oxide layer on the surface of the copper mesh (the mesh number of the copper mesh is 200 mesh) with sandpaper, then ultrasonically clean it in absolute ethanol and deionized water for 10 minutes, and blow dry with nitrogen.

[0054] (2) Put the copper mesh treated in step (1) into the mixed solution 1 of sodium hydroxide and ammonium persulfate at a temperature of 27°C (the concentration of the sodium chloride solution is 2.5mol L -1 and ammonium persulfate solution concentration is 0.05mol L -1 ) for 30 minutes; then put it into the mixed solution 1 diluted 10 times for 60 minutes; then put it into deionized water for 60 minutes.

[0055] (3) Rinse the sample obtained in step (2) with deionized water, dry it naturally, and obtain needle-shaped copper hydroxide on the surface of the copper mesh.

[0056] (4) Dip the cop...

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Abstract

The invention relates to a needle-like copper hydroxide material prepared based on copper grid surface in-situ growth, a preparation method and an oil-water separating method. The needle-like copper hydroxide material grows on a copper grid in an in-situ mode and has a hydrophilic and oleophilic surface or a hydrophobic surface structure. The preparation method comprises the steps: (1) cleaning the copper grid up; (2) putting the copper grid in a sodium hydroxide and ammonium persulfate mixed solution to react; (3) repeatedly putting the copper grid or no putting the copper grid into the sodium hydroxide and ammonium persulfate mixed solution with a progressively-decreasing concentration to react according to need; (4) finally, directly putting the copper grid into the sodium hydroxide andammonium persulfate mixed solution with the concentration which is further reduced or deionized water to react and preparing needle-like copper hydroxide on the surface of the copper grid; (5) performing hydrophobic treatment on the copper grid according to need to obtain super-hydrophobic needle-like copper hydroxide on the surface of the copper grid. The needle-like copper hydroxide material disclosed by the invention has the advantages of simple method, easiness in operation and suitability for large-area preparation. The copper grid can be applied oil-water separation and has a higher oil-water separating efficiency.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a needle-shaped copper hydroxide material prepared based on in-situ growth on the surface of a copper mesh, a preparation method and an oil-water separation method. Background technique [0002] With the rapid development of the global economy, people's production and living standards are constantly improving, but the ensuing environmental pollution problems are also becoming more and more serious. Among them, crude oil leakage and the discharge of oily wastewater in production and life have caused serious damage to water bodies. Therefore, the oil-water separation of oily wastewater has attracted widespread attention. [0003] In order to solve the above problems, researchers have conducted a lot of research and achieved certain research results. For example, the oil-water separation effect can be achieved by using some special wettable membranes. Among ...

Claims

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Application Information

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IPC IPC(8): C01G3/02B01D17/02C23C22/63C23C22/73
CPCB01D17/02C01G3/02C01P2004/03C01P2004/10C01P2004/60C23C22/63C23C22/73
Inventor 陈新华侯珂珂陈峥王豫宁徐静莉孙国富刘晓亭田敬李小双
Owner XUCHANG UNIV
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