UiO-66-NH2 composite material as well as preparation method thereof and application of composite material in seawater desalination

A technology of uio-66-nh2 and composite materials, applied in seawater treatment, chemical instruments and methods, water/sewage treatment, etc., can solve problems such as harsh conditions, achieve easy operation, excellent seawater desalination performance, and good application prospects Effect

Active Publication Date: 2018-10-16
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pervaporation membranes currently used for commercialization face harsh conditions

Method used

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  • UiO-66-NH2 composite material as well as preparation method thereof and application of composite material in seawater desalination
  • UiO-66-NH2 composite material as well as preparation method thereof and application of composite material in seawater desalination
  • UiO-66-NH2 composite material as well as preparation method thereof and application of composite material in seawater desalination

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preparation example Construction

[0072] In a preferred embodiment, the present invention also provides UiO-66-NH 2 A method for preparing a composite material, comprising the steps of:

[0073] i) Provide UiO-66-NH 2 Membrane reaction solution and porous alumina tubular support modified by APTES; and

[0074] ii) By solvothermal reaction, UiO-66-NH 2 The membrane is supported on the surface of the porous alumina tubular support modified by APTES to obtain UiO-66-NH 2 composite material.

[0075] In another preferred example, the temperature of the solvothermal reaction in step ii) is 100-150°C.

[0076] In another preferred embodiment, after step ii), a step is further included: washing the product with a solvent, and drying the product obtained in the previous step at 20-40°C.

[0077] In another preferred example, the drying time is 1-48 hours, preferably 15-30 hours.

[0078] In another preference, the UiO-66-NH 2 Membranes were prepared as follows:

[0079] a-1) providing a first mixed solution, s...

Embodiment 1

[0115] UiO-66-NH 2 composite material 1

[0116] Step 1. Functional modification of the carrier

[0117] Put the porous alumina ceramic tube collectively into the toluene solution of APTES with a concentration of 0.2mol / L, and react at 383K for 90min, thereby introducing -NH on the surface of the carrier 2 functional groups to facilitate the growth of MOF films.

[0118] Among them, the outer diameter of the ceramic tube is 12 mm, the inner diameter is 9 mm, the length is 75 mm, the pore diameter is 1.0 μm, and the porosity is 30%.

[0119] Step 2. Preparation of synthetic solution

[0120] Weigh 320mg of zirconium tetrachloride and 250mg of 2-aminoterephthalic acid, add 50ml of DMF (N,N'dimethylformamide), add 0.0247g of ultrapure water, and stir magnetically for 30min.

[0121] Step 3, UiO-66-NH 2 membrane growth

[0122] After the functionalized modified carrier was fixed, it was placed in a reaction kettle filled with synthesis solution, taken out after in-situ hydro...

Embodiment 2

[0132] Step 1. Functional modification of the carrier

[0133] Put the porous alumina ceramic tube collectively into the toluene solution of APTES with a concentration of 0.2mol / L, and react at 383K for 110min, thereby introducing -NH on the surface of the carrier 2 functional groups to facilitate the growth of MOF films.

[0134] Among them, the outer diameter of the ceramic tube is 12 mm, the inner diameter is 9 mm, the length is 65 mm, the pore diameter is 1.8 μm, and the porosity is 20%.

[0135] Step 2. Preparation of synthetic solution

[0136] Weigh 320mg of zirconium tetrachloride and 250mg of 2-aminoterephthalic acid, add 50ml of DMF (N,N'dimethylformamide), add 0.0247g of ultrapure water, and stir magnetically for 30min.

[0137] Step 3, UiO-66-NH 2 membrane growth

[0138] After the functionalized modified carrier was fixed, it was placed in a reaction kettle filled with synthesis solution, taken out after in situ hydrothermal synthesis at 383K for 40 hours, coo...

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Abstract

The invention discloses a UiO-66-NH2 composite material as well as a preparation method thereof and an application of the composite material in seawater desalination. The UiO-66-NH2 composite materialcomprises a carrier modified by 3-aminopropyltriethoxysilane and a UiO-66-NH2 film layer, wherein the UiO-66-NH2 film layer is covalently attached to the carrier. According to the preparation methoddisclosed by the invention, the carrier modified by the 3-aminopropyltriethoxysilane is placed into a UiO-66-NH2 film reaction solution for a reaction to obtain the UiO-66-NH2 composite material; andthe UiO-66-NH2 composite material disclosed by the invention has the simple preparation method and excellent seawater desalination treatment performance, and is suitable for large-scale promotion.

Description

technical field [0001] The invention relates to MOFs membranes, in particular to a UiO-66-NH 2 Composite materials and their preparation methods and applications. Background technique [0002] Water is the source of life and one of the important resources for human survival and development. Due to the uneven distribution of fresh water resources, many countries have pressure on the supply of fresh water resources and even face a crisis of fresh water resources. In recent years, with the growth of population and the development of society, the demand for fresh water has begun to increase. Especially since the 21st century, the demand for fresh water in agriculture, industry and domestic water has increased sharply. Coupled with the increasing consumption of water resources and the serious pollution of water resources, it has led to a global crisis of fresh water resources. There are more than 100 countries in the world that suffer from water shortages to varying degrees. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/06B01D67/00B01D69/12B01D71/02C02F1/44C02F103/08
CPCB01D67/0079B01D69/12B01D71/025B01D71/06C02F1/448C02F2103/08Y02A20/131
Inventor 黄爱生万林林
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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