Production method of graphene/ceramic composite filter membrane

A ceramic filter membrane and ceramic composite technology, which is applied in chemical instruments and methods, membrane technology, semipermeable membrane separation, etc., can solve the problems of low binding force between graphene oxide and ceramic filter membrane, low filtration efficiency, etc., and achieve improved filtration efficiency. Separation effect, high safety and long service life

Inactive Publication Date: 2017-05-17
于有海
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the low filtration efficiency of graphene oxide modified ceramic filter membranes in the prior art and the low binding force between graphene oxide and ceramic filt

Method used

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  • Production method of graphene/ceramic composite filter membrane
  • Production method of graphene/ceramic composite filter membrane
  • Production method of graphene/ceramic composite filter membrane

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1

[0031] This embodiment provides a method for preparing a graphene / ceramic composite filter membrane, which includes the following steps: configuring a graphene oxide solution with a certain concentration;

[0032] Infiltrate the graphene oxide solution on the surface of the ceramic filter membrane and the micropores of the ceramic filter membrane;

[0033] The graphene oxide / ceramic filter membrane is reduced to obtain a graphene / ceramic composite filter membrane.

[0034] The foregoing preparation method of the graphene / ceramic composite filter membrane can infiltrate the graphene oxide solution into the micropores of the ceramic filter membrane, avoiding that the graphene oxide solution can only be adsorbed on the surface of the ceramic filter membrane in the prior art; Reduce the pore size of the micropores in the ceramic membrane; reduce the graphene oxide to graphene, so that the graphene and the ceramic filter membrane are chemically bonded together. The reduc...

Example Embodiment

[0052] Another example is another specific implementation:

[0053] Choose distilled water as the solvent, disperse the freeze-dried and solidified graphene oxide in an aqueous solution to form a graphene oxide solution with a concentration of 1 mg / ml, and sonicate the graphene oxide solution at 600W for 0.5 hours to fully pulverize and disperse. Uniform graphene oxide solution.

[0054] The graphene oxide is filled into the pores of the zirconia ceramic membrane by a filter press method. First press and filter from the inside of the ceramic membrane to the outside of the ceramic membrane for 30 minutes, and then from the outside of the ceramic membrane to the inside of the ceramic filter membrane for 30 minutes, air dry, repeat the above steps twice to obtain a graphene oxide / ceramic composite filled many times Filter membrane.

[0055] Place the above-mentioned ceramic filter membrane with graphene oxide fragments embedded in the tube furnace. First, drain the air from the quartz...

Example Embodiment

[0059] As another example, another specific embodiment:

[0060] The difference from Example 1 is that the ceramic filter membrane filled with graphene oxide is placed in a sodium borohydride acid solution, reduced for 5 hours, and dried to obtain a graphene / ceramic composite filter membrane. The rejection rate of the reduced graphene / zirconia ceramic composite membrane to bovine serum albumin is 51.6%

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Abstract

The invention provides a production method of a graphene/ceramic composite filter membrane. The method comprises the following steps: preparing a graphene oxide solution with a certain concentration; allowing the graphene oxide solution to seep in the surface of a ceramic filter membrane and micropores of the ceramic filter membrane; and reducing a graphene oxide/ceramic filter membrane to obtain the graphene/ceramic composite filter membrane. The method allows the graphene oxide solution to seep in the micropores of the ceramic filter membrane, and avoids just adsorption of the graphene oxide solution to the surface of the ceramic filter membrane in the prior art, so the aperture dimension of the micropores in the ceramic membrane is reduced; graphene oxide is reduced into graphene, so grapene and the ceramic filter membrane are bonded through chemical bonds, and the phenomena of shedding of the graphene oxide and dissolution of the graphene in the solution are prevented; and the filtering performance of the graphene is bonded to the ceramic filter membrane, so the filtering separation effect and the mechanical strength of the graphene/ceramic composite filter membrane are improved.

Description

technical field [0001] The invention relates to the technical field of liquid membrane separation, in particular to a preparation method of a graphene / ceramic composite filter membrane. Background technique [0002] Water resources are the material basis for human survival. However, with the growth of the world's population and the continuous development of industrialization, the crisis of water resources faced by mankind is becoming more and more serious, especially in my country with a large population, uneven distribution of water resources, and water shortages. increasingly serious. In addition, because our country is in a stage of rapid development and the awareness of environmental protection is not strong, various pollutants are discharged directly without treatment, causing serious pollution of large areas of rivers and lakes, and directly aggravating the water resource crisis in our country. Therefore, how to efficiently utilize water resources has become the focus ...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D69/12B01D67/00C04B41/85
CPCB01D71/021B01D67/0044B01D69/12C04B41/85
Inventor 于有海闵永刚彭莉苑春秋孟冰露
Owner 于有海
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