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Metal-organic framework material, and molding method and application thereof

A metal-organic framework and molding method technology, applied in the field of environmental science and engineering, can solve the problems of difficult recovery, restrict the application of MOFs, easy loss, etc., and achieve the effects of not easy loss, good removal effect, and low cost.

Inactive Publication Date: 2018-12-07
SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing MOFs materials are usually in the form of powders, which are easy to be lost and difficult to recycle when directly applied in water bodies. It is precisely because of the limitation of their physical state that the application of this new type of adsorption material MOFs is restricted. Therefore, it is necessary to study MOFs materials. molding process

Method used

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  • Metal-organic framework material, and molding method and application thereof
  • Metal-organic framework material, and molding method and application thereof
  • Metal-organic framework material, and molding method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 0.5g, 5g and 20g of MIL-68(Al) powder into 100mL water respectively, heat the water bath to 90℃ and stir to disperse, then slowly add 1g sodium alginate, keep the temperature at 90℃ until the sodium alginate is completely dissolved, and cool to room temperature , To obtain a colloidal liquid; use a syringe to drop the colloidal liquid into a 4 wt% calcium chloride solution, let stand for 2 hours, filter, wash with water, and dry to obtain metal organic framework material particles. Labeled as particle 1, particle 2, and particle 3 in sequence.

Embodiment 2

[0042] In parallel 2 groups, respectively add 5g of MIL-68(Al) powder into 100mL water, heat the water bath to 90℃ and stir to disperse, then slowly add 0.3g and 20g sodium alginate respectively, keep the temperature at 90℃ until the sodium alginate is completely dissolved, and cool to At room temperature, the gelatinous liquid is obtained; use a syringe to drop the gelatinous liquid into the calcium chloride solution, in which 0.3g sodium alginate group is added dropwise to 1wt% calcium chloride solution, 20g sodium alginate group is added dropwise to 6wt % Calcium chloride solution, let stand for 2 hours, filter, wash with water, and filter dry to obtain metal organic framework material particles. Labeled as particle 4 and particle 5 in sequence.

Embodiment 3

[0043] Example 3: Adsorption test

[0044] Prepare chlortetracycline and oxytetracycline solutions with concentration gradients of 5, 10, 15, 20, 30, 40, and 50 mg / L, each with a volume of 100 mL, and 0.464 g of metal organic framework is added to each solution Material particle 2 (particle moisture content is 90%), shake and adsorb for 6 hours at 25°C.

[0045] Characterization methods and results:

[0046] (1) XRD analysis results

[0047] The materials prepared in Example 1 and Example 2 of the present invention were characterized by the Empyrean X-ray diffractometer produced by PANalytical, the operating conditions were: copper target, 40KV, 40mA, step length 0.02626 degrees, scanning speed 8.109 Seconds / step. The preparation of MIL-68(Al) powder refers to the literature (Synthesis of aluminum-based MOF / graphite oxide composite and enhanced removal of methyl orange[J].Journal of Alloys&Compounds,2017.). The result is figure 1 ,From figure 1 It can be seen that the XRD character...

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Abstract

The invention belongs to the technical field of environmental science and engineering, and discloses a metal-organic framework material and a molding method thereof, and an application in the field ofwastewater treatment and organic matter adsorption. The molding method includes the following steps: (1) adding a metal-organic framework material into water to prepare into a matrix solution, and adding sodium alginate to perform heating and uniform mixing so that a colloidal liquid can be obtained; and (2) adding the colloidal liquid into a calcium chloride solution, and performing standing, filtering, washing and drying so that metal-organic framework material particles can be obtained. The metal-organic framework material obtained by the method is also provided. The method can effectivelyshape the powdery metal-organic framework material, and the obtained particle materials can keep the crystalline structure of an original metal-organic framework; and the molded material particles effectively overcomes the technical problems of easy loss and hard recycle of powder materials, technical effects of efficiently removing tetracycline antibiotics in water can be realized, and the metal-organic framework material can be applied to the field of treating wastewater and removing organic matters.

Description

Technical field [0001] The invention belongs to the field of environmental science and engineering technology, and in particular relates to a metal organic framework material and its forming method and its application in the fields of wastewater treatment and organic matter adsorption. Background technique [0002] Tetracycline antibiotics are typical antibiotics, mainly including chlortetracycline, oxytetracycline, tetracycline and semi-synthetic derivatives of methenoxycycline, doxycycline, dimethylaminotetracycline, etc. Due to the lack of effective supervision, water pollution caused by the abuse of antibiotics has become a worldwide problem. The annual production of antibiotic raw materials in my country is about 210,000 tons, and the abuse is particularly serious. Antibiotics have been detected in surface water, groundwater, seawater, drinking water and urban sewage. Antibiotics are difficult to metabolize and degrade in humans and animals. About 25-75% of antibiotics afte...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/226B01J20/28016B01J20/30C02F1/285C02F2101/30
Inventor 周心慧程建华余林玲武士川
Owner SOUTH CHINA INST OF COLLABORATIVE INNOVATION
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