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Rotating magnetic field enhanced sodium alginate/mxene/cofeo gel and preparation method and application of high-efficiency enrichment of pollutants

A technology of sodium alginate and gel balls, which is applied in the fields of magnetic/electric field water/sewage treatment, water pollutants, water/sludge/sewage treatment, etc. It can solve the problems of difficult separation of powdered graphene and secondary pollution , to achieve the effect of enriching adsorption sites, enhancing adsorption effect, and simple process

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

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Problems solved by technology

However, powdered graphene is also difficult to separate, and it is easy to cause secondary pollution after adsorption.

Method used

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  • Rotating magnetic field enhanced sodium alginate/mxene/cofeo gel and preparation method and application of high-efficiency enrichment of pollutants
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  • Rotating magnetic field enhanced sodium alginate/mxene/cofeo gel and preparation method and application of high-efficiency enrichment of pollutants

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Embodiment 1

[0032] The preparation method of the sodium alginate / MXene / CoFeO gel ball of the present embodiment comprises the following steps:

[0033] (1) Weigh 400mg of MXene and dissolve it in a neutral aqueous solution, and transfer it into a 250ml volumetric flask, and form a uniform MXene aqueous solution by stirring and ultrasonicating for 200min, wherein the concentration of MXene is 4mg / mL;

[0034] (2) Add 2 g of sodium alginate into the MXene aqueous solution, and stir it mechanically for 4 hours to evenly disperse to obtain the first mixed solution;

[0035] (3) Add 400mgCoFeO in the first mixed solution, 400mgNaHCO The concentration is, 400mgL-cysteine;

[0036] (4) Weigh 4g calcium chloride in neutral aqueous solution, stir 1.5min in ultrasonic machine, obtain the 3rd mixed solution, the concentration of calcium chloride in the 3rd mixed solution is 10mg / mL;

[0037] (5) Use a peristaltic pump to drop the second mixed solution into the third mixed solution drop by drop to o...

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Abstract

The invention provides a rotating magnetic field enhanced sodium alginate / MXene / CoFeO gel and its preparation method and the application of high-efficiency enrichment of pollutants. The preparation method comprises: MXene is formed in an aqueous solution to form an MXene aqueous solution; sodium alginate is added to the MXene aqueous solution Obtain the first mixed solution; add CoFeO, NaHCO in the first mixed solution 3 , L-cysteine ​​obtains the second mixed solution; the organogel beads are obtained by dropping the ball into the calcium chloride solution through a peristaltic pump; the sodium alginate / MXene / CoFeO organogel beads of the present invention have excellent adsorption properties , and has the characteristics that sodium alginate is easy to form gel, which not only enhances the adsorption effect, but also simplifies the process of solid-liquid separation; this method uses the incorporation of two-dimensional material MXene to further improve the adsorption and Mechanical behavior. The external rotating magnetic field can greatly increase the rate of fast adsorption, and exhibit enhanced adsorption capacity for the adsorption selectivity of ciprofloxacin.

Description

technical field [0001] The invention belongs to the technical field of environmental material synthesis, and specifically relates to a sodium alginate / MXene / CoFeO gel and a preparation method thereof, and the application of an external rotating magnetic field to excite the internal magnetic field of the organic gel to enhance the adsorption performance of the organic gel. Background technique [0002] Sodium alginate is a natural polysaccharide with low cost, high hydrophilicity, excellent properties such as stability and biocompatibility, and has been widely studied. Alginate composite gel has become a hot material to solve the problem of dyes and heavy metals in water. But on the other hand, the porosity of alginate is low, and the adsorption effect needs to be improved. Graphene and its derivative materials have excellent adsorption properties for pollutants in water due to their high specific surface area. However, powdery graphene is also difficult to separate, and it...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F1/48C02F101/20C02F101/30
CPCB01J20/06B01J20/205B01J20/24B01J20/28047B01J20/28019B01J20/28011C02F1/288C02F1/48C02F2101/20C02F2101/308
Inventor 马杰任建燃
Owner TONGJI UNIV
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