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Organic-inorganic composite conductive filter membrane and preparation method thereof

An inorganic composite and organic technology, which is applied in the field of organic-inorganic composite conductive filter membrane and its preparation, can solve the problems that the filter membrane does not have electrical conductivity and cannot apply the electrocatalytic process, so as to improve hydrophilicity, enhance mechanical strength, Improve the effect of interception

Pending Publication Date: 2022-05-31
合肥九号线传媒科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention: PSF filter membrane itself does not have electrical conductivity, so it cannot be applied to the electrocatalytic process

Method used

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  • Organic-inorganic composite conductive filter membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] PANI / CeO 2 Prepared by following steps:

[0020] A1. Add 90mL of 0.4M NaOH solution dropwise under stirring to 80mL of 0.1M cerium nitrate hexahydrate solution, then add 1mL of 10% PVP aqueous solution, react for 1h, centrifuge, wash, dried and calcined at 600 °C to give CeO 2 Nanoparticles;

[0021] A2, add 0.1g CeO 2 Nanoparticles were ultrasonically dispersed into deionized water, transferred to a reaction flask, added 5 mL of hydrochloric acid solution with a volume fraction of 10%, stirred mechanically, then added 1 mL of aniline, stirred mechanically at room temperature for 24 h, centrifuged, washed with ethanol and distilled water, respectively, 50 ℃ vacuum drying to obtain a solid, then added to 10mL polyacrylic acid solution with a volume fraction of 1%, stirred and mixed for 3h, and then centrifuged, washed and dried to obtain PANI / CeO 2 .

Embodiment 2

[0023] PANI / CeO 2 Prepared by following steps:

[0024] A1. Add 100mL of 0.4M NaOH solution dropwise under stirring to 90mL of 0.1M cerium nitrate hexahydrate solution, then add 2mL of 10% PVP aqueous solution, react for 1h, centrifuge, wash, dried and calcined at 600 °C to give CeO 2 Nanoparticles;

[0025] A2, add 0.2g CeO 2 Ultrasonic dispersion of nanoparticles into deionized water, transfer to a reaction flask, add 8mL of hydrochloric acid solution with a volume fraction of 10%, stir mechanically, then add 1.5mL aniline, stir mechanically at room temperature for 24h, after centrifugation, wash with ethanol and distilled water respectively, Vacuum-dry at 50°C to obtain a solid, then add it to 15mL polyacrylic acid solution with a volume fraction of 1.5%, stir and mix for 3h, and then centrifuge, wash and dry to obtain PANI / CeO 2 .

Embodiment 3

[0027] PANI / CeO 2 Prepared by following steps:

[0028] A1. Add 110mL of 0.4M NaOH solution dropwise under stirring to 100mL of 0.1M cerium nitrate hexahydrate solution, then add 3mL of 10% PVP aqueous solution, react for 1h, centrifuge, wash, dried and calcined at 600 °C to give CeO 2 Nanoparticles;

[0029] A2, 0.3g CeO 2 Nanoparticles were ultrasonically dispersed into deionized water, transferred to a reaction flask, added 10mL of hydrochloric acid solution with a volume fraction of 10%, stirred mechanically, then added 2mL aniline, stirred mechanically at room temperature for 24h, centrifuged, washed with ethanol and distilled water, respectively, 50 ℃ vacuum drying to obtain a solid, then added to 20mL polyacrylic acid solution with a volume fraction of 2.5%, stirred and mixed for 3h, and then centrifuged, washed and dried to obtain PANI / CeO 2 .

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Abstract

The invention relates to an organic-inorganic composite conductive filter membrane and a preparation method thereof, and belongs to the technical field of conductive filter membranes, and the preparation method comprises the following steps: drying polyethersulfone particles in a vacuum oven, adding PVP and PANI / CeO2 into N, N-dimethylacetamide, then carrying out water bath ultrasonic treatment, adding the dried polyethersulfone particles, and carrying out water bath heating to obtain a membrane casting solution; and uniformly scraping the membrane casting solution on a clean glass plate by using a membrane scraping rod, drying, and separating the membrane from the glass plate to obtain the organic-inorganic composite conductive filter membrane. According to the technical scheme, PANI is introduced into the polyethersulfone membrane, so that the polyethersulfone membrane has hydrophilicity; on the other hand, the PANI nanofiber has certain rigidity, so that the mechanical strength of the membrane can be enhanced.

Description

technical field [0001] The invention belongs to the technical field of conductive filter membranes, and in particular relates to an organic-inorganic composite conductive filter membrane and a preparation method thereof. Background technique [0002] Electrocatalytic membrane filtration technology is a new membrane separation technology that combines membrane separation technology with electrocatalytic oxidation. The base film is mainly based on a conductive porous material with stable physical and chemical properties, and the base film is coated with nanomaterials with electrocatalytic properties. Under a low-voltage electric field, the hydroxyl (2OH) and super Oxygen free radicals (2O 2- ) and hydrogen peroxide (H 2 o 2 ) and other oxidants decompose organic pollutants. Membrane separation technology has the advantages of simple operation, small footprint, no phase change and no new pollutants during the treatment process, and good separation effect. It has been widely...

Claims

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Application Information

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IPC IPC(8): B01D67/00B01D69/02B01D69/12B01D71/68C02F1/44C02F1/461C02F1/72C02F101/30
CPCB01D71/60B01D71/024B01D71/68B01D69/02B01D69/12B01D67/0079C02F1/44C02F1/4672B01D2325/10B01D2325/14B01D2325/24B01D2325/36C02F2101/30Y02W10/10
Inventor 张启明
Owner 合肥九号线传媒科技有限公司