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Preparation method of polydopamine modified polyethersulfone imprinted composite membrane

A technology of polydopamine and polyethersulfone membranes, applied in chemical instruments and methods, membranes, membrane technology, etc., can solve the problem that phenol cannot be separated specifically, achieve good selectivity, increase activity and adhesion, and absorb A large amount of effect

Active Publication Date: 2020-05-01
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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  • Preparation method of polydopamine modified polyethersulfone imprinted composite membrane

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Embodiment Construction

[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

The invention discloses a preparation method of a polydopamine modified polyethersulfone imprinted composite membrane, and belongs to the field of carbon material preparation, surface functional modification and application, and can solve the problem that specific separation cannot be realized when an existing membrane separation technology is applied to removal of phenol in industrial wastewater., The preparation method includes the following steps: preparing glucose microporous carbon nanospheres with a hydrothermal method, and performing surface activation by using a silane coupling agent;modifying the surface of the polyethersulfone membrane by adopting a dopamine biomimetic modification technology; by taking glucose as a carrier, phenol as a template molecule and 4-vinylpyridine as afunctional monomer, compounding functionalized glucose microporous carbon spheres with a dopamine-modified polyether sulfone membrane through a thermal initiation polymerization reaction, and performing cross-linking polymerization on the surface of the membrane to form an imprinted polymer layer with a specific recognition function on phenol molecules. According to the imprinted composite membrane, a surface molecular imprinting technology and a membrane separation technology are combined, and the prepared material has a large specific surface area and high-affinity phenol imprinting recognition sites.

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...

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Application Information

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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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