Micro/nano interface separation net as well as preparation method and application thereof

A separation net and nano technology, which is applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of difficulty in ensuring the uniformity of the coating on the surface of the separation net, single function of the oil-water separation net, and failure to achieve oil-water separation. , to achieve the effect of good redox reversibility, easy and precise control, and diversified functions

Inactive Publication Date: 2012-04-18
BEIHANG UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

But there are following defects in the above-mentioned technology: one, the coating layer on the surface of the fiber braid is prepared by spraying or gel sol dipping, which needs to be dried or sintered to set the shape, the preparation process is complicated, and the omentum performance is easily affected by spraying / coating Due to the influence of the drying process, it is difficult to ensure the uniformity of the coating on the surface of the separation net; the second is that the existing oil-water separation net has a single function, which fails to achieve intelligent and controllable oil-water separation

Method used

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  • Micro/nano interface separation net as well as preparation method and application thereof
  • Micro/nano interface separation net as well as preparation method and application thereof
  • Micro/nano interface separation net as well as preparation method and application thereof

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preparation example Construction

[0036] The present invention also provides a method for preparing the above-mentioned micro / nano interface separation network, which specifically includes the following steps:

[0037] (1) Alternately immerse the 40-300 mesh metal fiber braided net in absolute ethanol and deionized water for ultrasonic cleaning, and finally dry it at normal temperature;

[0038] (2) Prepare an electrolyte solution containing a dopant / conductive polymer monomer, which specifically consists of 0.01-1 parts by weight of a conductive polymer monomer, 0.02-2 parts by weight of a dopant and 10 parts by weight of distilled water composition, ultrasonically disperse the electrolyte into an emulsion;

[0039] (3) immerse the metal fiber braided mesh, platinum sheet, and silver-silver chloride electrode in the above-mentioned emulsion, wherein the metal fiber braided mesh is the working electrode, the platinum sheet is the auxiliary electrode, and the silver-silver chloride electrode is the reference el...

Embodiment 1

[0045] (1) 40-mesh stainless steel fiber braided mesh (2.5cm×1cm) was alternately immersed in absolute ethanol and deionized water for ultrasonic cleaning, and finally dried at room temperature;

[0046] (2) prepare the electrolytic solution containing dopant / conducting polymer monomer, this electrolytic solution is specifically made of 0.01 gram of 3,4-ethylenedioxythiophene, 0.05 gram of sodium lauryl sulfate and 10 grams of distilled water composition, ultrasonically disperse the electrolyte into an emulsion;

[0047] (3) Immerse the stainless steel fiber braided mesh, smooth platinum sheet (2cm×1cm), and silver-silver chloride electrode (electrolyte concentration is 3M) in the emulsion of step 2, wherein the stainless steel fiber braided mesh is the working electrode, and the platinum sheet As the auxiliary electrode, the silver-silver chloride electrode is used as the reference electrode, forming a three-electrode system, controlling the constant potential at 1.6V, and re...

Embodiment 2

[0050] (1) 100-mesh stainless steel fiber woven mesh (2.5cm×1cm) was alternately immersed in absolute ethanol and deionized water for ultrasonic cleaning, and finally dried at room temperature;

[0051] (2) prepare the electrolytic solution containing dopant / conductive polymer monomer, this electrolytic solution is specifically made up of 3-hexylthiophene of 0.05 gram, the sodium dodecylbenzenesulfonate of 0.5 gram and the distilled water of 10 gram, will The electrolyte is ultrasonically dispersed into an emulsion;

[0052] (3) Immerse the stainless steel fiber braided mesh, smooth platinum sheet (2cm×1cm), and silver-silver chloride electrode (electrolyte concentration is 3M) in the emulsion of step 2, wherein the stainless steel fiber braided mesh is the working electrode, and the platinum sheet As the auxiliary electrode, the silver-silver chloride electrode is used as the reference electrode, forming a three-electrode system, controlling the constant potential at 1.4V, an...

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Abstract

The invention provides a micro/nano interface separation net as well as a preparation method and an application thereof. The micro/nano interface separation net comprises a metal fiber braided net and a conductive polymer layer covering the surface of the metal fiber braided net, wherein the conductive polymer layer is formed by a doped conductive polymer with redox reversibility. The micro/nano interface separation net has a simple manufacturing process, can transform between underwater super oleophobic property and underwater super lipophilic property and is suitable for different oil-water systems, thus realizing intelligent and controllable oil-water separation.

Description

technical field [0001] The invention belongs to the technical fields of chemical engineering and functional materials, and in particular relates to a micro / nano interface separation net and its preparation method and application. Background technique [0002] The free water contained in the oil will affect the quality of the oil and cause corrosion to mechanical equipment. The oily sewage discharged from urban and industrial production is a serious source of environmental pollution. Therefore, it is important to find an economical, durable and efficient oil-water separation method for industrial production, Urban life urgently needs to be solved. At present, oil-water separators with complex equipment and high energy consumption are widely used in the field of oil-water separation technology. Compared with them, the emerging micro / nano interface separation material technology is not only an environmentally friendly purification technology, but also has Low energy consumptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022
Inventor 朱英郭照琰江雷
Owner BEIHANG UNIV
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