Unlock instant, AI-driven research and patent intelligence for your innovation.

ZnGaNO-polymer self-cleaning hybrid membrane and preparation method thereof

A polymer membrane, polymer technology, applied in chemical instruments and methods, membrane, membrane technology, etc., can solve problems such as inconvenience and increase operating costs, and achieve the effects of simple operation, low production cost, and good hydrophilicity

Active Publication Date: 2017-01-04
XIAMEN UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common photocatalytic inorganic particles are titanium dioxide (TiO 2 ) particles, but the photocatalytic effect can only be exerted under ultraviolet light, that is, ultraviolet photocatalytic activity, which brings inconvenience to practical application and increases operating costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • ZnGaNO-polymer self-cleaning hybrid membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Disperse 0.005g and 0.01g of ZnGaNO particles in 1.8mL of N-methylpyrrolidone (NMP), and dissolve 1g of polysulfone in 4mL of NMP; then add the ZnGaNO dispersion into the polysulfone solution, stir, and perform ultrasonic treatment , to obtain a uniform casting solution; after the prepared casting solution was left to stand for degassing, it was directly coated on a clean glass plate with a glass rod; the glass plate was placed horizontally and immersed in a water bath at 30°C, and the prepared film was used Rinse with plenty of water to remove residual solvent in the membrane, and store in water.

[0033] Under the operating pressure of 0.2MPa, the pure water flux of the obtained ZnGaNO particle content of 0.5% and 1% ZnGaNO-polysulfone hybrid ultrafiltration membrane is 254L / m respectively. 2 h, 356L / m 2 h (the pure water flux of the pure polysulfone ultrafiltration membrane prepared under the same parameters is only 189L / m 2 h), the retention rate of the bovine ser...

Embodiment 2

[0035] Disperse 0.01g ZnGaNO particles in 1.8mL N-methylpyrrolidone (NMP), dissolve 1g polysulfone in 4mL NMP; then add the ZnGaNO dispersion into the polysulfone solution, stir, and perform ultrasonic treatment to obtain a uniform cast film liquid; after the prepared film casting solution is left to stand for defoaming, it is directly coated on a clean glass plate with a glass rod; the glass plate is placed horizontally and immersed in a water bath at 30°C, and the prepared film is washed with a large amount of water to remove Solvent remaining in the film and kept in water.

[0036] Under the operating pressure of 0.2MPa, the measured pure water flux of the ZnGaNO-polysulfone hybrid ultrafiltration membrane is 356L / m 2 h. After the membrane is polluted by methylene blue, the pure water flux drops to 84L / m 2 h, After irradiating with a visible light source for 30 minutes, the methylene blue adsorbed on the surface of the membrane is basically degraded, the blue color disapp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing a ZnGaNO-polymer self-cleaning hybrid membrane with a phase inversion method. The method comprises steps as follows: S1, ZnGaNO particles are dispersed in a first solvent and dispersed ultrasonically to be uniform; S2, a polymer is dissolved in the first solvent, a dispersing agent containing the ZnGaNO particles is added, the components are stirred and subjected to ultrasonic processing, and a membrane casting solution is obtained; S3, the prepared membrane casting solution is left to stand and defoamed, and a product is arranged on a substrate, flows and extends; S4, the substrate coated with the membrane casting solution is horizontally placed and soaked in a second solvent and is subjected to phase inversion, a membrane is obtained, and the ZnGaNO-polymer self-cleaning hybrid membrane is obtained, wherein the first solvent is a good solvent of the polymer and the second solvent is a poor solvent of the polymer. The invention further relates to the ZnGaNO-polymer self-cleaning hybrid membrane prepared with the method.

Description

technical field [0001] The invention relates to a ZnGaNO-polymer self-cleaning hybrid membrane and a preparation method thereof. Background technique [0002] With the continuous development of society, the increasingly serious problems of water resource scarcity and water pollution need to be solved urgently. Due to its advantages of high efficiency, energy saving, and environmental protection, membrane technology has become one of the most promising high-tech technologies in the 21st century, and has been widely used in many fields, such as water treatment, pharmaceuticals, and biochemistry. However, in actual long-term production and use, the membrane will inevitably be polluted, resulting in a decrease in membrane flux and a shortened service life, which is one of the main problems restricting the development and application of membrane technology. Many methods have been studied and tried to improve the anti-fouling performance of the membrane, among which the introduct...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/14B01D67/00B01D69/02B01D71/16B01D71/26B01D71/30B01D71/34B01D71/42B01D71/50B01D71/52B01D71/56B01D71/64B01D71/68
CPCB01D61/145B01D67/0079B01D69/02B01D71/16B01D71/26B01D71/30B01D71/34B01D71/42B01D71/50B01D71/52B01D71/56B01D71/64B01D71/68B01D2325/36
Inventor 吴慧青胡艳玲刘跃军曾达聪郑贤庭毛龙
Owner XIAMEN UNIV OF TECH