Superhydrophobic metal-organic framework composite material, and preparation method and application thereof

A metal-organic framework and composite material technology, which is applied in the field of preparation of superhydrophobic metal-organic framework composite materials, can solve the problems of toxicity, high price of fluorine-containing materials, adverse effects on the environment and human body, and achieve great application prospects and excellent hydrophobicity. properties and chemical stability, the effect of simple preparation method

Active Publication Date: 2019-01-11
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, fluorine-containing materials are expensive and have adverse effects on the environment and the human body. For example, perfluorooctane sulfonic acid is strictly restricted by the European Union due to its toxicity to organisms and mammals.

Method used

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  • Superhydrophobic metal-organic framework composite material, and preparation method and application thereof
  • Superhydrophobic metal-organic framework composite material, and preparation method and application thereof
  • Superhydrophobic metal-organic framework composite material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Superhydrophobic metal-organic framework composite material

[0033] (1) The preparation method is as follows

[0034] 1. Preparation of metal-organic framework materials:

[0035] 1) 800mg Cr(NO 3 ) 3 , 328mg of terephthalic acid, 10mL of deionized water and 1.5mL of 36% acetic acid solution were added into a 25mL autoclave, and stirred for 30min at room temperature;

[0036] 2) Seal the autoclave and put it into an oven, heat it to make the temperature of the oven rise from room temperature to 473K, and keep it at this temperature for 24 hours; the heating rate is 5°C·min -1 .

[0037] 3) at 5°C·min -1 The cooling rate was slowly cooled to room temperature and left to stand for 24 hours to obtain a dark green powder, which was centrifuged, and the collected solid was washed with water, N,N-dimethylformamide (DMF), ethanol and methanol in sequence, centrifuged, and dried.

[0038] The obtained metal-organic framework material, which is denoted as MIL-10...

Embodiment 2

[0050] Example 2 Application of superhydrophobic metal-organic framework composites in oil-water separation

[0051] (1) Oil absorption performance

[0052] Oil-water separation experimental device such as Figure 5 As shown, the oil-water separation experimental device consists of an upper pipeline 1, a lower pipeline 2, a collection device 3, a fixed separation device 4, a superhydrophobic filter paper 5 and an oil-water mixture container 6. The super-hydrophobic filter paper 5 is placed between the upper pipe 1 and the lower pipe 2, and the MIL-101-OA composite material prepared in Example 1 is placed on the super-hydrophobic filter paper 5.

[0053] Preparation of oil-containing dye wastewater: Add 100 mL of chloroform (TCM), n-hexane (n-hexane; Hex), petroleum fans (Petroleum ether; PE) and toluene ( Toluene), respectively configured as oil-water mixed solution.

[0054] Method: Take 200mL of the above-mentioned oil-water mixture solution in the oil-water mixture conta...

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Abstract

The invention relates to a superhydrophobic metal-organic framework composite material, and a preparation method and an application thereof. The preparation method comprises the following steps: carrying out vacuum activation on a metal-organic framework material at 120-150 DEG C for 24 h, wherein the metal-organic framework material is MIL-101 (Cr) nanocrystals; adding a toluene solution of octadecylamine to the activated metal-organic framework material MIL-101 (Cr) nanocrystals, and carrying out a reaction at 333-393 K in nitrogen atmosphere for 12-24 h; and slowly cooling the obtained solution to room temperature, centrifuging the cooled solution, washing the collected solid with toluene, centrifuging the washed solid, and drying the centrifuged solid to obtain the target product. Thesuperhydrophobic metal-organic framework composite material prepared in the invention can be applied to the field of oil-water separation, and can efficiently separate multiple oil and water mixtures.

Description

technical field [0001] The present invention relates to a preparation method and application of a superhydrophobic metal-organic framework composite material, in particular to a porous metal-organic framework composite material with superhydrophobic function and a preparation method thereof, and its application to various Separation of oil-water mixture. Background technique [0002] In the past few years, due to the exploitation, processing, transportation of crude oil and the extensive use of various refined oils, the water body has been seriously polluted, the living environment has been deteriorated, and human health has been endangered. Therefore, with the shortage of water resources and the aggravation of pollution, the comprehensive treatment of oily wastewater has become a topic that urgently needs to be explored and studied. [0003] In recent years, the preparation and application of superhydrophobic materials have received extensive attention. Superhydrophobic m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/40B01D17/022
CPCB01D17/0202B01J20/22B01J20/226B01J20/28011C02F1/40
Inventor 韩正波高明亮
Owner LIAONING UNIVERSITY
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