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Preparation method of super-hydrophobic meshy material

A super-hydrophobic, mesh-like technology, applied in separation methods, chemical instruments and methods, liquid separation, etc., can solve the problems of membrane fouling, high cost, complicated operation, etc., and achieve controllable experimental parameters, low cost, and simple operation. Effect

Active Publication Date: 2014-06-11
HARBIN INST OF TECH
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Problems solved by technology

The preparation of porous materials by the hydrogen bubble template method is a simple, convenient, low-cost, and parameter-controllable method. This method can be deposited on copper mesh to obtain a three-dimensional porous network film. The porous film is prepared using dynamic hydrogen bubbles as a template. Compared with the hard template method, the advantage of this method is that it does not need to remove the template, which solves the problems of high cost, complicated operation, serious membrane pollution and other problems of the existing method, and is expected to realize industrial production

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  • Preparation method of super-hydrophobic meshy material
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  • Preparation method of super-hydrophobic meshy material

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specific Embodiment approach 1

[0022] Specific implementation mode 1: In this implementation mode, a superhydrophobic reticular porous film is prepared according to the following steps:

[0023] In the first step, the mesh-like porous Cu film was prepared by the hydrogen bubble template method ( figure 2 )

[0024] Electrodeposition of network porous Cu thin films by hydrogen bubble template method is based on platinum sheet (1cm 2 ) as the anode, and the counter electrode uses copper mesh (aperture 300μm, area 3*3cm 2 ) is the cathode, and its electroplating device such as figure 1 shown. The pretreatment of the copper mesh in the experiment includes polishing, degreasing, acid etching, water washing, absolute ethanol soaking, acetone cleaning, and low-temperature blast drying. The composition of the plating solution is 0.02-4mol L -1 CuSO 4 and 0.1-5mol L -1 h 2 SO 4 , the pH is controlled within the range of 4.0±0.5, and the current density range of electrodeposition is 0.1-6.0A cm -2 , the de...

specific Embodiment approach 2

[0028] Specific embodiment two: In this embodiment, a superhydrophobic mesh porous film is prepared according to the following steps:

[0029] Step 1. Preparation of mesh-like porous Cu film by hydrogen bubble template method

[0030] Electrodeposition of network porous Cu thin films by hydrogen bubble template method is based on platinum sheet (1cm 2 ) as the anode, and the counter electrode uses copper mesh (aperture 300μm, area 3*3cm 2 ) is the cathode. The pretreatment of the copper mesh in the experiment includes polishing, degreasing, acid etching, water washing, absolute ethanol soaking, acetone cleaning, and low-temperature blast drying. The composition of the plating solution is 0.1mol L -1 CuSO 4 and 1mol L -1 h 2 SO 4 , the pH is controlled within the range of 4.0±0.5, and the current density of electrodeposition is 3A cm -2 , the deposition time is 10s. The deposited reticular film should be immediately rinsed with distilled water, soaked in absolute ethan...

specific Embodiment approach 3

[0034] Specific embodiment three: In this embodiment, a superhydrophobic reticulated porous film is prepared according to the following steps:

[0035] Step 1 Fabrication of reticulated porous Cu thin films by hydrogen bubble template method

[0036] Electrodeposition of network porous Cu thin films by hydrogen bubble template method is based on platinum sheet (1cm 2 ) as the anode, and the counter electrode uses copper mesh (aperture 300μm, area 3*3cm 2 ) is the cathode. The pretreatment of the copper mesh in the experiment includes polishing, degreasing, acid etching, water washing, absolute ethanol soaking, acetone cleaning, and low-temperature blast drying. The composition of the plating solution is 0.2mol L -1 CuSO 4 and 1mol L -1 h 2 SO 4 , the pH is controlled within the range of 4.0±0.5, and the current density of electrodeposition is 3A cm -2 , the deposition time is 10s. The deposited reticular film should be immediately rinsed with distilled water, soaked i...

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Abstract

The invention discloses a preparation method of a super-hydrophobic meshy material. The method comprises the following steps of (1) preparing a porous meshy Cu film by using a hydrogen bubble template method; (2) oxidizing the porous Cu film at a certain temperature to obtain Cu2O, and modifying the surface of the porous meshy Cu film by using dodecylthiol and tetradecanoic acid to obtain a super-hydrophobic porous meshy film. The hydrogen bubble template method for preparing a porous material has the advantages of simplicity, convenience, low cost and parameter controllability; a three-dimensional porous meshy film can be obtained through depositing on a copper wire mesh by using the method; the porous film is prepared by taking a dynamic hydrogen bubble as a template; compared with a hard template method, the method has the advantages that the template is not needed to be removed, the problems such as high cost, complexity in operation and serious film pollution in the traditional method are solved, and the industrial production is expected to be realized.

Description

technical field [0001] The invention relates to a preparation method of a super-hydrophobic porous network film. Background technique [0002] Oily wastewater is a common wastewater in industry. Direct discharge will cause serious harm to the environment, indirectly pollute the atmosphere and soil, and seriously endanger human health. Oil-water separation technology has an important impact in petrochemical and other fields, including the recovery of sea waste oil, oil production wastewater, and the separation of organic solvents. Due to the large difference in surface tension between water and oil, choosing a surface with different wettability to water and oil can selectively adsorb one phase and repel the other phase. Enhancing the wettability of the surface can improve the separation efficiency. [0003] The superhydrophobic phenomenon ubiquitous in nature, the main factors affecting its wettability are the surface chemical composition and surface microstructure, accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/38C25D5/48B01D17/022
Inventor 刘宇艳张恩爽卫剑征原因王秋霞
Owner HARBIN INST OF TECH
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