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Preparation method and application of MIL-100 (Fe)/cellulose porous composite spheres

A technology of cellulose and cellulose solution, applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of difficult recycling of powdered MOFs, industrial application of secondary pollution, high loss rate, etc. problems, to achieve the effect of improving recycling performance, abundant reserves, and low cost

Active Publication Date: 2022-06-28
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, powdered MOFs are difficult to recycle, have a high loss rate, and easily cause secondary pollution, which seriously hinders their industrial application.

Method used

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  • Preparation method and application of MIL-100 (Fe)/cellulose porous composite spheres
  • Preparation method and application of MIL-100 (Fe)/cellulose porous composite spheres
  • Preparation method and application of MIL-100 (Fe)/cellulose porous composite spheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The preparation method of MIL-100(Fe) / cellulose porous composite spheres specifically includes the following steps:

[0043] (1) Add 2 g of sodium carboxymethyl cellulose into 98 mL of deionized water, stir at a speed of 1000 r / min for 3 h in a water bath at 40°C, and ultrasonicate for 50 min to obtain a sodium carboxymethyl cellulose solution;

[0044](2) Add 3.6g MIL-100(Fe) powder to 20g sodium carboxymethyl cellulose solution, use a homogenizer shear at 20°C to stir at 10000r / min for 1h, and place it in a water bath at 20°C Medium ultrasonic for 20min, until it turns into a uniform thick fluid mixture to obtain a mixed solution;

[0045] (3) The mixed solution was added dropwise to a cupric chloride solution with a temperature of 20 °C and a concentration of 0.5 mol / L for 30 minutes, the spherical MOFs were collected by filtration, and then added to deionized water at 20 °C for 3 hours to obtain composite spherical water. gel;

[0046] (4) The composite bead hydro...

Embodiment 2

[0048] The preparation method of MIL-100(Fe) / cellulose porous composite spheres specifically includes the following steps:

[0049] (1) Add 2.5 g of sodium carboxymethyl cellulose into 97.5 mL of deionized water, stir in a water bath at 30°C for 2.5 hours at a speed of 1200 r / min, and ultrasonicate for 8 minutes to obtain a sodium carboxymethyl cellulose solution;

[0050] (2) Add 4.2g MIL-100(Fe) powder to 25g sodium carboxymethyl cellulose solution, use a homogenizer shear at 25°C to stir at 15000r / min for 1h, and place it in a water bath at 25°C Medium ultrasonic for 25min, until it turns into a uniform thick fluid mixture to obtain a mixed solution;

[0051] (3) The mixed solution was added dropwise to a cupric chloride solution with a temperature of 25 °C and a concentration of 1 mol / L for 20 minutes, and the spherical MOFs were collected by filtration, and then added to deionized water at 25 °C for 2 hours to obtain composite spherical hydrogels. glue;

[0052] (4) Put...

Embodiment 3

[0054] The preparation method of MIL-100(Fe) / cellulose porous composite spheres specifically includes the following steps:

[0055] (1) Add 3 g of sodium carboxymethyl cellulose into 97 mL of deionized water, stir at a speed of 1000 r / min for 3 hours in a water bath at 40°C, and sonicate for 10 minutes to obtain a sodium carboxymethyl cellulose solution;

[0056] (2) Add 5.1g of MIL-100(Fe) powder to 27.5g of sodium carboxymethylcellulose solution, use a homogenizer shear at 30°C to stir at 20000r / min for 0.5h, and at 30°C Ultrasonic in the water bath for 30min until it turns into a uniform thick fluid mixture to obtain a mixed solution;

[0057] (3) The mixed solution was added dropwise to a cupric chloride solution with a temperature of 30 °C and a concentration of 1.5 mol / L for 25 minutes, the spherical MOFs were collected by filtration, and then added to deionized water at 30 °C for 2.5 hours to obtain composite pellets. Hydrogels;

[0058] (4) Put the composite bead hyd...

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Abstract

The invention discloses a preparation method of MIL-100 (Fe) / cellulose porous composite pellets, which specifically comprises the following steps: (1) adding a cellulose binder into water, stirring in a water bath, and carrying out ultrasonic treatment to obtain a cellulose solution; (2) adding MIL-100 (Fe) into the cellulose solution, uniformly stirring, and performing water bath ultrasonic treatment to obtain a mixed solution; (3) adding the mixed solution into a metal ion solution for first soaking, filtering, and adding into water for second soaking to obtain composite pellet hydrogel; and (4) drying the composite pellet hydrogel to obtain the composite pellet hydrogel. The MIL-100 (Fe) / cellulose porous composite sphere has the advantages of good mechanical property, large specific surface area, high porosity, large MIL-100 (Fe) loading capacity, high adsorption and degradation efficiency, easiness in recycling and the like, can realize high-efficiency adsorption and degradation of dyes, and has a relatively great application prospect.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a preparation method and application of a MIL-100(Fe) / cellulose porous composite ball. Background technique [0002] With the acceleration of the industrialization process, the wanton discharge of industrial wastewater and man-made harmful wastewater, a large number of pollutants accumulated in natural water resources are difficult to degrade, causing serious damage to the ecological environment and human living environment. [0003] As my country's dominant industry, the textile industry occupies a leading position in the global textile industry, but the problem of printing and dyeing wastewater discharge in this industry is very serious. At the same time, dyestuffs are the most important pollutants in printing and dyeing wastewater. Dyes are widely used in industries such as textiles, leather, paper, painting and plastics. These wastewaters are complex in composition an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08J3/075C08L87/00C08L1/28C08K3/16C02F1/28C02F101/30
CPCC08J9/28C08J3/075C08J9/0061C08J9/0066C02F1/286C02F2101/308C08J2387/00C08J2401/28C08K3/16Y02W10/37
Inventor 高俊阔吴育杭姚菊明
Owner ZHEJIANG SCI-TECH UNIV