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Rotating magnetic field enhanced sodium alginate/MXene/CoFeO gel and preparation method and application thereof in efficient enrichment of pollutants

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

Active Publication Date: 2021-06-18
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 thereof in efficient enrichment of pollutants
  • Rotating magnetic field enhanced sodium alginate/MXene/CoFeO gel and preparation method and application thereof in efficient enrichment of pollutants
  • Rotating magnetic field enhanced sodium alginate/MXene/CoFeO gel and preparation method and application thereof in efficient enrichment of pollutants

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Effect test

Embodiment 1

[0032] The preparation method of the sodium alginate / MXENE / COFEO gel ball in this embodiment includes the steps of:

[0033] (1) Weighing 400 mgmxne dissolved in a neutral aqueous solution, and shifted into a 250 mL volumetric flask, a uniform MXENE aqueous solution was formed by stirring and ultrasonic, wherein MXENE concentration was 4 mg / mL;

[0034] (2) 2g of sodium alginate was added to the MXENE aqueous solution, and the first mixed solution was evenly dispersed by mechanical stirring for 4 h.

[0035] (3) 400 mgCoFeo, 400 mgNaHCO3 was added to the first mixture, 400 mgl-cysteine;

[0036] (4) Weighing 4 g of calcium chloride in a neutral aqueous solution, stirring 1.5 min in an ultrasound machine to obtain a third mixed solution, a concentration of calcium chloride in the third mixed solution of 10 mg / mL;

[0037] (5) The second mixed solution is dripped into the third mixed solution by dripping into the third mixed solution to obtain a sodium alginate / MXENE / COF...

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Abstract

The invention provides a rotating magnetic field enhanced sodium alginate / MXene / CoFeO gel, a preparation method and application thereof in efficient enrichment of pollutants. The preparation method comprises the following steps: forming an MXene aqueous solution from MXene in an aqueous solution; adding sodium alginate into the MXene aqueous solution to obtain a first mixed solution; adding CoFeO, NaHCO3 and L-cysteine into the first mixed solution to obtain a second mixed solution; dripping pellets into a calcium chloride solution through a peristaltic pump to obtain organic gel pellets. The sodium alginate / MXene / CoFeO organic gel pellets disclosed by the invention have excellent adsorption performance and also have the characteristic that sodium alginate is easy to form gel, so that the adsorption effect is enhanced, and the solid-liquid separation process is simplified; the two-dimensional material MXene is doped, so that the adsorption and mechanical properties of the organic gel pellets are further improved. The external rotating magnetic field can greatly improve the adsorption rate, and shows enhanced adsorption capacity for adsorption selectivity of ciprofloxacin.

Description

Technical field [0001] The present invention belongs to the field of environmental material synthesis, and in particular, the sodium alginate / MXENE / COFEO gel and the preparation method thereof and an external rotary magnetic field excitation organic gel inner magnetic field, enhanced organic gel adsorption properties. Background technique [0002] Sodium alginate is a natural polysaccharide, low cost, high hydrophilicity, and has been widely studied with excellent characteristics such as stability and biocompatibility. The alginate composite gel has become a hot material that solves dyes and heavy metal problems in water. But on the other hand, the porosity of the alginate is low, and the adsorption effect needs to be improved. The graphene and its derivative materials have excellent adsorption properties for contaminants in water due to the high characteristics of the surface area. However, powder graphene is also difficult because it is difficult to separate, and it is easy...

Claims

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Application Information

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Patent Type & Authority Applications(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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