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A kind of preparation method of polydopamine modified polyethersulfone imprinted composite membrane

A technology of polydopamine and polyethersulfone membranes, which is applied in chemical instruments and methods, membranes, membrane technologies, etc., can solve the problems that phenol cannot be separated specifically, and achieve increased antifouling performance and hydrophilicity, increased activity and Adhesiveness and large adsorption capacity

Active Publication Date: 2022-02-25
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] Aiming at the problem that the existing membrane separation technology cannot achieve specific separation when it is applied to remove phenol in industrial wastewater, the present invention provides a preparation method of polydopamine-modified polyethersulfone imprinted composite membrane, which has rich pore structure and large specificity. Surface area of ​​glucose microporous carbon nanospheres as one of the imprinting matrix materials and silanization modification on the surface

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  • A kind of preparation method of polydopamine modified polyethersulfone imprinted composite membrane
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  • A kind of preparation method of polydopamine modified polyethersulfone imprinted composite membrane

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[0028] The material used in the present invention is as follows:

[0029] Glucose: solid solid, purity 99%; γ-methacryloxypropyltrimethoxysilane: liquid liquid, purity 99%; absolute ethanol: liquid liquid, purity 99.7%; deionized water: liquid liquid, purity 99.99%; 4-vinylpyridine: liquid liquid, purity 99%; ethylene glycol dimethacrylate: liquid liquid, purity 99.9%; phenol: solid solid, purity 99.5%; toluene: liquid liquid, purity 99.5%; Azobisisobutyronitrile: solid solid, purity 99.5%; Dopamine: solid solid, purity 99.5%; Tris: solid solid, purity 99.9%.

[0030] The polyethersulfone membrane was purchased from Merck Millipore, with a diameter of 13 mm and a membrane pore size of 0.45 μm.

[0031] Such as figure 1 As shown, the position and connection relationship of each part must be correct, and the installation should be firm.

[0032] The preparation of the polydopamine-modified polyethersulfone imprinted composite membrane was carried out in a single-necked flask ...

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Abstract

A preparation method of polydopamine-modified polyethersulfone imprinted composite membrane, which belongs to the field of carbon material preparation, surface functional modification and application, and can solve the problem that the existing membrane separation technology cannot achieve specific separation when applied to the removal of phenol in industrial wastewater , glucose microporous carbon nanospheres were prepared by hydrothermal method, and the surface was activated by silane coupling agent. The surface of polyethersulfone membrane was modified by dopamine biomimetic modification technology. Using it as a carrier, phenol as a template molecule, and 4-vinylpyridine as a functional monomer, the functionalized glucose microporous carbon spheres were composited with the dopamine-modified polyethersulfone membrane through thermally induced polymerization, and cross-linked on its surface. Copolymerization forms an imprinted polymer layer with specific recognition function for phenol molecules. The imprinted composite membrane combines the surface molecular imprinting technology with the membrane separation technology, and the prepared material has a large specific surface area and a high-affinity phenol imprinted recognition site.

Description

technical field [0001] The invention belongs to the technical field of carbon material preparation, surface functional modification and application, and specifically relates to a preparation method of a polydopamine-modified polyethersulfone imprinted composite membrane used for separation and recovery of phenol in industrial wastewater. Background technique [0002] Membrane separation technology has been widely concerned and applied in the purification treatment of industrial wastewater due to its good removal rate, environmental protection and energy saving, and a series of advantages such as easy solid-liquid separation. Phenol in industrial wastewater is a difficult to degrade, highly toxic, and carcinogenic substance. In order to suppress water pollution and ensure people's water safety, it is particularly important to remove phenol in wastewater. However, the production cost of separation membrane is high, and specific separation cannot be achieved, which restricts th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/82B01D71/76B01D71/68B01D69/12B01D69/02B01J20/26B01J20/28B01J20/30C02F1/28C02F1/44C02F101/34
CPCB01D71/82B01D71/76B01D71/68B01D69/125B01D69/02B01J20/268B01J20/28033C02F1/285C02F1/44B01D2325/12C02F2101/345
Inventor 刘旭光屈芸秦蕾杨永珍
Owner TAIYUAN UNIV OF TECH
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