Aluminum/cerium bimetal organic framework material, preparation method and application of aluminum/cerium bimetal organic framework material in phosphorus adsorption and removal

An organic framework and bimetallic technology, which is applied in the field of preparation of aluminum/cerium bimetallic organic framework materials, can solve the problems of low adsorption and phosphorus removal efficiency and low reusability, and achieve high reagent cost, reduced preparation cost, and wide The effect of pH range

Active Publication Date: 2022-03-08
HUAQIAO UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these adsorbents are convenient, easy to obtain, and economical, they have problems such as low adsorption and phosphorus removal efficiency and low reusability.

Method used

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  • Aluminum/cerium bimetal organic framework material, preparation method and application of aluminum/cerium bimetal organic framework material in phosphorus adsorption and removal
  • Aluminum/cerium bimetal organic framework material, preparation method and application of aluminum/cerium bimetal organic framework material in phosphorus adsorption and removal
  • Aluminum/cerium bimetal organic framework material, preparation method and application of aluminum/cerium bimetal organic framework material in phosphorus adsorption and removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] An Al / Ce bimetallic organic framework material provided in this embodiment is prepared according to the following method:

[0042] (1) Add 0.3751g of aluminum nitrate nonahydrate, 0.8684g of cerium nitrate hexahydrate and 0.1661g of terephthalic acid into 30mL of N,N-dimethylformamide, and the resulting solution is ultrasonically treated for 15min.

[0043] (2) Put the mixed solution of step (1) into a 50mL polytetrafluoroethylene-lined stainless steel autoclave, place it in a muffle furnace, heat at 110°C for 20h, and cool to room temperature after the reaction is complete.

[0044] (3) The product obtained in step (2) was washed 5 times with DMF, and dried at 60° C. for 30 min to obtain a white powder.

[0045] (4) Place the white powder prepared in step (3) in a vacuum drying oven at 150 ° C for 12 hours to obtain an Al / Ce bismuth with a molar ratio of aluminum salt, cerium salt and terephthalic acid of 1:2:1. metal-organic framework materials.

Embodiment 2

[0047] This example provides an Al / Ce bimetallic organic framework material, which is different from Example 1 in that: in the Al / Ce bimetallic organic framework material, the molar ratio of aluminum salt to cerium salt is 1:1.

Embodiment 3

[0049] This example provides an Al / Ce bimetallic organic framework material, which is different from Example 1 in that: in the Al / Ce bimetallic organic framework material, the molar ratio of aluminum salt to cerium salt is 1:3.

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Abstract

The invention provides an aluminum/cerium bimetal organic framework material, a preparation method and application of the aluminum/cerium bimetal organic framework material in adsorbing and removing phosphorus. According to the method, cerium salt, aluminum salt and terephthalic acid are used as raw materials, N, N-dimethylformamide is used as a solvent, and the aluminum/cerium bimetal organic framework material is synthesized through a one-step hydrothermal synthesis method. The aluminum/cerium double-metal organic framework material disclosed by the invention has a relatively large specific surface area and a moderate pore diameter, so that the removal of phosphate radicals in water is facilitated. Meanwhile, through ligand exchange and complexation between Al and Ce in the material and phosphate, the material has an excellent phosphorus removal effect. The aluminum/cerium bimetal organic framework material has high selectivity on phosphate, is suitable for treating phosphorus-containing wastewater containing various ions and natural organic matters under the coexistence condition, and has relatively high phosphorus removal efficiency. In addition, the aluminum/cerium bimetal organic framework material also has a wide pH application range, and can realize rapid and efficient removal of phosphate radicals in a water body, thereby having a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of water treatment, and in particular to an aluminum / cerium bimetallic organic framework material, a preparation method and an application for adsorption and dephosphorization thereof. Background technique [0002] With the development of science and technology and the improvement of people's living standards, frequent human activities continue to affect the surrounding environment. Among them, the phenomenon of eutrophication caused by the artificial discharge of industrial wastewater and domestic sewage containing nutrients is particularly prominent. The eutrophication of the water body causes algae to proliferate in large numbers, which not only reduces the transparency of the water, consumes dissolved oxygen, but also produces harmful substances such as hydrogen sulfide, and even destroys the ecological balance of the water environment in severe cases. Excess discharge of phosphorus in the water environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F101/10
CPCB01J20/226B01J20/3085B01J20/28057B01J20/28078C02F1/285B01J2220/4806B01J2220/4812C02F2101/105C02F2209/06
Inventor 苑宝玲李宝城张志勇艾慧颖付明来徐垒
Owner HUAQIAO UNIVERSITY
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