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A kind of preparation method and application of sgo-zno-psf composite ultrafiltration membrane

A technology of ultrafiltration membranes and composite nanomaterials, which is applied in the field of preparation of SGO-ZnO-PSF composite ultrafiltration membranes, can solve problems affecting membrane separation performance, achieve the effects of improving antifouling performance, large application value, and alleviating agglomeration

Active Publication Date: 2022-01-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, GO is also an amphiphilic material, which means that hydrophobic pollutants (proteins) can be adsorbed on the membrane surface, affecting the separation performance of the membrane

Method used

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  • A kind of preparation method and application of sgo-zno-psf composite ultrafiltration membrane
  • A kind of preparation method and application of sgo-zno-psf composite ultrafiltration membrane
  • A kind of preparation method and application of sgo-zno-psf composite ultrafiltration membrane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Preparation of SGO-ZnO composite nanomaterials: Add 2.0 g of anhydrous zinc acetate into 100 mL of absolute ethanol to form a zinc acetate / ethanol solution, reflux at 80 °C for 20 min and cool to 50 °C; , take 0.15 g SGO and disperse it in 50 mL absolute ethanol, add 0.3 g lithium hydroxide after ultrasonication for 30 min to obtain SGO / ethanol solution, stir in 50°C water bath for 30 min; then add SGO / ethanol solution to zinc acetate / In the ethanol solution, continue to stir in a 50°C water bath for 40min; after the mixed solution is naturally cooled to room temperature, add 200 mL of hexane, seal it, place it in the refrigerator overnight, centrifuge and wash with deionized water and ethanol three times respectively, and vacuum at 45°C Vacuum drying for 12 h to obtain SGO-ZnO composite nanomaterials.

[0033] (2) Preparation of SGO-ZnO-PSF composite ultrafiltration membrane: 0.01 g of the SGO-ZnO composite nanomaterial (0.05 wt.%) prepared in step (1) was dissolv...

Embodiment 2

[0036](1) Preparation of SGO-ZnO composite nanomaterials: Add 3.0 g of anhydrous zinc acetate into 100 mL of absolute ethanol to form a zinc acetate / ethanol solution, reflux at 80 °C for 20 min and cool to 50 °C; at the same time , take 0.2 g SGO and disperse it in 50 mL absolute ethanol, add 0.3 g lithium hydroxide after ultrasonication for 30 min to obtain SGO / ethanol solution, stir in 50 °C water bath for 30 min; then add SGO / ethanol solution to zinc acetate / A mixed solution was formed in the ethanol solution, and continued to stir in a water bath at 50°C for 40 min. After the mixed solution was naturally cooled to room temperature, 200 mL of hexane was added, sealed, placed in the refrigerator overnight, and then centrifuged and washed three times with deionized water and ethanol. , vacuum-dried at 45°C for 12 h to obtain SGO-ZnO composite nanomaterials.

[0037] (2) Preparation of SGO-ZnO-PSF composite ultrafiltration membrane: Take 0.02g of the SGO-ZnO composite nanomat...

Embodiment 3

[0040] (1) Preparation of SGO-ZnO composite nanomaterials: Take 1.0 g of anhydrous zinc acetate and add it to 100 mL of absolute ethanol to form a zinc acetate / ethanol solution, reflux at 80 °C for 20 min and then cool the temperature to 50 °C; , take 0.1 g SGO and disperse it in 50 mL absolute ethanol, add 0.3 g lithium hydroxide after ultrasonication for 30 min to obtain SGO / ethanol solution, stir in 50 °C water bath for 30 min; then add SGO / ethanol solution to zinc acetate / A mixed solution was formed in the ethanol solution, and continued to stir in a water bath at 50°C for 40 min. After the mixed solution was naturally cooled to room temperature, 200 mL of hexane was added, sealed, placed in the refrigerator overnight, and then centrifuged and washed three times with deionized water and ethanol. , vacuum-dried at 45°C for 12 h to obtain SGO-ZnO composite nanomaterials.

[0041] (2) Preparation of SGO-ZnO-PSF composite ultrafiltration membrane: 0.04 g of the SGO-ZnO compos...

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Abstract

The invention belongs to the technical field of material preparation and separation, and in particular relates to a preparation method and application of a SGO-ZnO-PSF composite ultrafiltration membrane. The present invention disperses ZnO nanoparticles on the SGO sheet by the immersion precipitation phase inversion method to prepare SGO-ZnO composite nanomaterial blended modified PSF ultrafiltration membrane, which can effectively prevent negatively charged humic acid from polluting the membrane and is used for separation humic acid in water. The SGO-ZnO-PSF composite ultrafiltration membrane prepared by the present invention has good anti-pollution performance, and at the same time solves the problems of inorganic material doping modification and easy agglomeration, and the modified composite membrane can effectively prevent negatively charged humic acid contamination of the membrane.

Description

technical field [0001] The invention belongs to the technical field of material preparation and separation, and in particular relates to a preparation method and application of an SGO-ZnO-PSF composite ultrafiltration membrane. Background technique [0002] Lack of access to clean drinking water is a global problem, and water management infrastructure is lacking even in developed countries. Natural organic matter (NOM) mainly refers to the macromolecular organic matter produced by the decay and decomposition of animal and plant residues during the natural cycle, including humus, microbial secretions, and dissolved animal tissues and animal waste. NOM widely exists in water bodies and is the cause of chroma, odor, and corrosion of water distribution pipe walls. When NOM-contaminated water is treated with disinfectants such as chlorine-based compounds, carcinogenic organic compounds will be formed. Humic acid (HA), an important component of natural organic matter, is a major ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/38B01D71/02B01D69/12B01D67/00B01D61/14C02F1/44C02F101/30
CPCB01D71/021B01D71/024B01D71/38B01D69/12B01D67/0013B01D61/145C02F1/444C02F2101/30
Inventor 刘燕刘建益吴佳明仇恒丽倪良
Owner JIANGSU UNIV
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