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A preparation method of ordered mesoporous carbon-stainless steel wire mesh composite separation membrane

A kind of stainless steel and mesoporous carbon technology, which is applied in semi-permeable membrane separation, chemical instruments and methods, membrane technology, etc., to achieve the effects of good ductility, easy processing and forming, and simple preparation process.

Inactive Publication Date: 2016-06-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are great differences between mesoporous carbon and stainless steel wire mesh in terms of physics and properties, so the technical problem to be solved in the present invention is to overcome the deficiencies in the prior art, use stainless steel wire mesh as the base material, and use HNO 3 The stainless steel surface was pretreated with the solution, and then the ordered mesoporous carbon-stainless steel wire mesh composite separation membrane was prepared by evaporation-induced self-assembly (EISA), and the prepared separation membrane was used for the separation of various polluted water bodies. ideal separation effect

Method used

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  • A preparation method of ordered mesoporous carbon-stainless steel wire mesh composite separation membrane
  • A preparation method of ordered mesoporous carbon-stainless steel wire mesh composite separation membrane
  • A preparation method of ordered mesoporous carbon-stainless steel wire mesh composite separation membrane

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Experimental program
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Effect test

Embodiment 1

[0032] (1) Clean and degrease the surface of the stainless steel wire mesh base material;

[0033] (2) Immerse the stainless steel wire mesh with clean surface obtained in step (1) in fuming HNO 3 Oxidation treatment in the solution for 12h, and then ultrasonic cleaning with deionized water until neutral;

[0034] (3) Weigh 2g of F127 as a structure-directing agent, add it to 4g of absolute ethanol (EtOH), stir at room temperature until completely dissolved, and add 2g of commercial phenolic resin (FR) into the dissolved ethanol solution as a carbon source (wherein, The mass ratio of FR:F127:EtOH is 1:1:2), then stirred for 1 hour to obtain a transparent solution, put the pretreated stainless steel wire mesh (100 mesh) in the obtained transparent solution for two times, and evaporated at room temperature , to obtain the carrier material of the film, the thickness of the mixed liquid film is about 200 μm;

[0035] (4) Put the volatilized stainless steel wire mesh hanging film...

Embodiment 2

[0041] (1) Clean and degrease the surface of the stainless steel wire mesh base material;

[0042] (2) Immerse the stainless steel wire mesh with clean surface obtained in step (1) in fuming HNO 3 Oxidation treatment in the solution for 12h, and then ultrasonic cleaning with deionized water until neutral;

[0043] (3) Weigh 2.4g of F127 as the structure-directing agent, add it to 8g of absolute ethanol (EtOH), stir at room temperature until completely dissolved, add 2g of commercial phenolic resin (FR) to the dissolved ethanol solution as a carbon source (of which , the mass ratio of FR:F127:EtOH is 1:1.2:8), then stirred for 1 hour to obtain a transparent solution, put the pretreated stainless steel wire mesh (800 mesh) in the obtained transparent solution for two times, and volatilized at room temperature Finally, the film carrier material is obtained, and the film thickness of the mixed solution is about 50 μm;

[0044] (4) Put the volatilized stainless steel wire mesh ha...

Embodiment 3

[0047] (1) Clean and degrease the surface of the stainless steel wire mesh base material;

[0048] (2) Immerse the stainless steel wire mesh with clean surface obtained in step (1) in fuming HNO 3 Oxidation treatment in the solution for 24 hours, and then ultrasonic cleaning with deionized water until neutral;

[0049] (3) Weigh 2.8g of F127 as a structure-directing agent, add it to 12g of absolute ethanol (EtOH), stir at room temperature until completely dissolved, add 2g of commercial phenolic resin (FR) to the dissolved ethanol solution as a carbon source (of which , the mass ratio of FR:F127:EtOH is 1:1.4:14), and then stirred for 1 hour to obtain a transparent solution. The pretreated stainless steel wire mesh (2000 mesh) was placed in the obtained transparent solution for three times, and after volatilization at room temperature , to obtain the carrier material of the film, the thickness of the mixed liquid film is about 80 μm;

[0050] (4) Put the volatilized stainless ...

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Abstract

The invention belongs to the fields of preparation of ordered mesoporous carbon materials and applications of the materials, and relates to a preparing method of an ordered mesoporous carbon-stainless steel wire mesh composite separating membrane. The preparing method includes: a step of cleaning and degreasing the surfaces of a carrier material; a step of dipping the carrier material into nitric acid to perform oxidation, and washing with distilled water until neutral; a step of adding a carbon source and a structure-directing agent into absolute ethanol and mixing, and stirring at room temperature uniformly to obtain a transparent solution; a step of putting the stainless steel wire mesh carrier material into the transparent solution to cover the carrier material with the solution so that a film-covered carrier material is obtained after volatilization at room temperature; and a step of ageing and calcinating. The composite separating membrane overcomes difficulties, namely difficult recovery and easy loss of traditional powder adsorbents and poor heat resistance of carrier materials. The composite separating membrane is simple in preparation process and has a wide prospect in the application field of pollutant separation.

Description

technical field [0001] The invention belongs to the field of preparation and application of ordered mesoporous carbon materials, and relates to a preparation method of ordered mesoporous carbon-stainless steel mesh composite separation membrane. Background technique [0002] Mesoporous carbon is a new type of non-silicon-based mesoporous material with a huge specific surface area (up to 2500m 2 / g) and pore volume (up to 2.25cm 3 / g), high porosity, narrow pore size distribution, easy adjustment of pore size, easy modification of pore surface, etc., so it shows broad application prospects in the fields of catalysis, separation, medicine, environment, functional composite materials, etc. one of the leading research areas. The mesoporous carbon material itself is a powder, and the suspension system is usually used in the application process, and the use form is to mix the mesoporous carbon material into the solution. The suspension system has the advantages of sufficient co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D69/12B01D71/02B01D67/00
Inventor 范建伟闵弘扬李丹丹姜序
Owner TONGJI UNIV