Preparation of ferrocenyl metal organic framework material and application of ferrocenyl metal organic framework material in water treatment

An organic framework and metal-based technology, applied in the field of preparation of ferrocene-based metal-organic framework materials, can solve the problems of uneven dispersion in aqueous environments, unsatisfactory reusability, and low adsorption capacity, and achieve a simple and easy preparation method , high porosity, efficient adsorption effect

Active Publication Date: 2019-12-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional adsorbents still have some unavoidable shortcomings, such as uneven dispersion in the aqueous environment, low adsorption capacity, long adsorption time, and unsatisfactory reusability. Therefore, there is still a great demand for stable and efficient adsorbents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 350.0mg of zirconium acetate and 170.0mg of 1,1'-ferrocenedicarboxylic acid into a polytetrafluoroethylene tank, add 20ml of N,N-dimethylformamide solution and 1.7ml of glacial acetic acid solution, and sonicate at room temperature Disperse for 30 minutes. The polytetrafluoroethylene tank containing the above solution was sealed in a stainless steel reaction kettle, placed in an electric blast dryer, and heated at 120° C. for 9 hours. After the reaction, the reaction solution was cooled to room temperature, and the reaction solution was centrifuged at 3000r.p.m for 30 minutes. The tan precipitate after centrifugation was taken, washed three times with N,N-dimethylformamide solution, and washed twice with deionized water. Once, freeze-dried for 5 days to obtain a brown dry powder of the ferrocene-based metal-organic framework material.

Embodiment 2

[0032] 10 mg of the ferrocene-based metal organic framework material was weighed, dispersed in 20 ml of aqueous solution with pH 4, and ultrasonically dispersed for 30 minutes. The above dispersion was placed in a magnetic stirrer, and stirred at 50° C. at a speed of 400 r.p.m for 5 minutes to achieve temperature equilibrium. In above-mentioned dispersion liquid, add 0.5 milliliter concentration and be the Congo red mother liquor of 5mg / mL, continue to stir. Use a syringe to sample 1 ml of the dispersion after adding Congo Red 1, 2, 3, 4, 5, and 10 minutes respectively. After the dispersion is filtered with a 0.22 micron water-based filter head, use a UV-visible spectrophotometer to scan 300-600 Wavelength range, according to the absorption intensity of the absorption peak at 443nm and the Congo red standard curve to calculate the concentration of Congo red in the sample, so as to calculate the maximum adsorption capacity of the ferrocene-based metal organic framework material...

Embodiment 3

[0034] Weigh 10 mg of ferrocene-based metal organic framework material, disperse in 20 ml of aqueous solution with pH 4, and ultrasonically disperse for 30 minutes. The above dispersion was placed in a magnetic stirrer and stirred at 50° C. at a speed of 400 r.p.m for 5 minutes to achieve temperature equilibrium. In the above dispersion liquid, add 0.5 ml of Congo red mother liquor with a concentration of 5 mg / mL, and continue to stir for 30 minutes. After the adsorption is completed, centrifuge the above dispersion at 3000r.p.m for 30 minutes, take a sample of the supernatant to measure the concentration of Congo red; wash the precipitate with 35 ml of methanol solution and soak for 1 hour, and wash once with deionized water after centrifugation again. Applied to the next adsorption.

[0035] Experimental results show that the maximum adsorption capacity of Congo red can still be maintained at about 120 mg / g after repeated use of the material of the present invention three t...

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Abstract

The invention discloses preparation of a ferrocenyl metal organic framework and application of the ferrocenyl metal organic framework in water treatment. The ferrocenyl metal organic framework is prepared by adopting zirconium acetate (Zr(OAc)4) and 1,1'-ferrocenedicarboxylic acid (Fc) as metal nodes and ligands, and under the condition that acetic acid is used as a regulator through a solvothermal method. The zirconium acetate and an organic ligand Fc are dissolved in a solvent, a monobasic acid regulator is added, a closed reaction is performed at 120 DEG C for 9 h, and after the reaction iscompleted, cooling, washing and drying are performed to obtain the material. The porous metal organic framework disclosed by the invention is applied to adsorption treatment of organic dye-Congo redin a water body as an efficient adsorbent; the maximum adsorption capacity can reach 249.2 mg / g, and the adsorption value of 50% of the maximum adsorption capacity can be maintained after the ferrocenyl metal organic framework is used for three times, which indicates that the adsorbent has very high adsorption efficiency and practical application value.

Description

technical field [0001] The patent of the invention belongs to the technical field of heterogeneous adsorption materials, and specifically relates to the preparation of a ferrocene-based metal-organic framework material and its application in water treatment. Background technique [0002] With the rapid development of modern industry, water pollution has become a serious problem due to the illegal discharge of certain factory pollutants. Among all these pollutants, the removal of water-soluble dyes is extremely challenging because they are quite toxic even in very trace amounts. Congo Red is an artificial azobenzene dye widely used in the leather, manufacturing and food industries. Due to the good solubility and stability of Congo red in water, a large amount of waste water containing Congo red may be discharged into rivers or lakes during the production and dyeing process, so the treatment of toxic dyes in water is harmful to our health and the environment Conservation mat...

Claims

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Application Information

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IPC IPC(8): C07F19/00C08G83/00B01J20/22B01J20/28B01J20/30C02F1/28C02F101/30C02F101/34C02F101/38
CPCB01J20/226B01J20/28004B01J20/28033B01J20/28059C02F1/285C02F2101/308C02F2101/34C02F2101/38C02F2101/40C07B2200/13C07F17/02C08G83/008
Inventor 俞豪杰刘纪扬王立
Owner ZHEJIANG UNIV
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