Preparation method of graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier

A technology of graphene oxide and quinone compounds, applied in chemical instruments and methods, anaerobic digestion treatment, water pollutants, etc., can solve secondary pollution and other problems, achieve accelerated anaerobic biotransformation, best catalytic performance, excellent The effect of the ability to transfer electrons

Inactive Publication Date: 2017-06-13
DALIAN UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

Secondly, chemical methods are used to covalently fix the water-soluble quinone compound in the above-mentioned composite material, so as to solve the technical problem that it is easily lost with the effluent as a redox mediator and cause secondary pollution.

Method used

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  • Preparation method of graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier

Examples

Experimental program
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Effect test

Embodiment 1

[0020] At room temperature, wash and dry about 0.7g of polyurethane foam containing hydroxyl groups (6 pieces, about 1cm in size) 3 ) into 1mg / ml graphene oxide aqueous solution and let it stand for 5 minutes, take it out, dry it, wash it and dry it, then put it into 80mL of 2mmol / L sodium hydroxide solution, add 20ml diethylenetriamine, and stir for 3 hours , rinsed with distilled water and dried. Reserve 10ml of the original reaction solution and add water to dilute it to 100ml, add 1ml / L ammonia water, transfer the graphene oxide modified polyurethane foam and 100ml diluted solution to a 500mL flask with a stirrer, heat up to 98°C and react for 1h , rewashed with distilled water and dried to obtain ammoniated graphene oxide modified polyurethane foam. In a 500mL flask with a stirrer, add 0.7g of ammoniated graphene oxide modified polyurethane foam and 100mL of 2mmol / L NaOH solution, dissolve 0.2mM anthraquinone-2-sulfonyl chloride in 25mL of dichloromethane , and then add...

Embodiment 2

[0022] At room temperature, wash and dry about 0.7g of polyurethane foam containing hydroxyl groups (6 pieces, about 1cm in size) 3) into 1mg / ml graphene oxide aqueous solution and let it stand for 5 minutes, take it out, wash and dry after drying, repeat the above procedure 3 times, then put it into 50mL of 2mmol / L sodium hydroxide solution, add 50ml of diethylenetri Amine, stirred and reacted for 6 hours, rinsed with distilled water and dried. Keep 4ml of the original reaction solution and add water to dilute it to 100ml, add 1ml / L ammonia water, transfer the graphene oxide modified polyurethane foam and 100ml diluted solution to a 500mL flask with a stirrer, heat up to 98°C and react for 1h , rewashed with distilled water and dried to obtain ammoniated graphene oxide modified polyurethane foam. In a 500mL flask with a stirrer, add 0.7g of ammoniated graphene oxide modified polyurethane foam and 100mL of 2mmol / L NaOH solution, dissolve 0.4mM anthraquinone-2-sulfonyl chlorid...

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Abstract

The invention relates to a preparation method of a graphene oxide and quinone compound co-modified hydroxyl-containing macroporous foam carrier and belongs to the technical field of water treatment in environmental engineering. The preparation method comprises the following steps: preparing a graphene oxide modified polyurethane foam composite material from a hydroxyl-containing macroporous foam material at the room temperature by virtue of a physical adsorption method, and aminating the composite material until graphene oxide and polyurethane foam contain a certain amount of primary amine; and reacting by virtue of an anthraquinone compound containing sulfonyl chloride groups with primary amine, so as to fix a quinone compound, wherein the hydroxyl-containing macroporous foam material can be polyvinyl alcohol foam or polyvinyl alcohol doped polyurethane foam and the like. According to the preparation method, the quinone compound and graphene oxide are simultaneously fixed to the surface of the macroporous foam material, so that the contact among a redox mediator, graphene and microorganisms is facilitated; and the technical bottlenecks that graphene and the water soluble quinone compound in a water treatment system are difficult to be recycled and flow out along with water to cause secondary pollution are solved.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering water treatment, and relates to a method for preparing a macroporous foam carrier containing hydroxyl groups co-modified by graphene oxide and quinone compound. Background technique [0002] With the rapid development of modern industry, a large amount of industrial wastewater needs to be effectively treated and then discharged into the natural environment. Among them, refractory organic wastewater (such as wastewater containing halogenated, azo and nitroaromatics) is one of the most difficult industrial wastewater to treat. Biological method has become a commonly used treatment method because of its economical, effective and environment-friendly. However, due to the presence of electron-withdrawing groups such as azo bonds and nitro groups in this type of wastewater, it is difficult for compounds containing these groups to be degraded directly through oxidation. Anaerobic-aerob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/38C02F101/36
Inventor 吕红周杨王竞周集体冷雪荧
Owner DALIAN UNIV OF TECH
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