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A uio-66@ma metal-organic framework material and its preparation method and application

A metal-organic framework and UIO-66 technology, which is applied in the direction of luminescent materials, analytical materials, material excitation analysis, etc., can solve the problems of non-performance and high detection limit of hexanal, achieve low detection limit, good chemical stability and thermal stability good sex effect

Active Publication Date: 2022-04-15
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the content of hexanal pollutants in the atmosphere is often extremely low, only 1-80ppm. Common detection materials have a high detection limit for hexanal, and cannot play an effective role in the detection of low-concentration hexanal.

Method used

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  • A uio-66@ma metal-organic framework material and its preparation method and application
  • A uio-66@ma metal-organic framework material and its preparation method and application
  • A uio-66@ma metal-organic framework material and its preparation method and application

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preparation example Construction

[0023] The present invention provides a method for preparing the above-mentioned UIO-66@MA metal organic framework material, comprising the following steps:

[0024] Mix the UIO-66 metal organic framework material with an organic solvent for a coordination reaction to obtain the UIO-66@MA metal organic framework material.

[0025] In the present invention, there is no special limitation on the preparation method of the UIO-66 metal-organic framework material, and the method well-known to those skilled in the art can be used for preparation. In an embodiment of the present invention, the preparation method of the UIO-66 metal organic framework material preferably includes:

[0026] The terephthalic acid, zirconium chloride and organic solvent are mixed, and the solvothermal reaction is carried out to obtain the UIO-66 metal organic framework material.

[0027] In the invention, terephthalic acid, zirconium chloride and polar organic solvent are mixed for solvothermal reaction ...

Embodiment 1

[0041] 0.285g zirconium chloride (ZrCl 4 , 1.223mmol), 0.2030g terephthalic acid (C 8 h 6 o 4 , 1.222mmoL) and 50mL DMF were put into a 100mL polytetrafluoroethylene reactor, shaken and mixed, and carried out solvothermal reaction at 120°C for 24h, cooled to room temperature naturally, and suction filtered after taking it out, and the obtained solid was immersed in 50mLDMF After 20 hours, filter with suction, repeat three times, then impregnate with 50mL chloroform, repeat three times. Then suction filtered, and the obtained product was dried in a vacuum oven at 200° C. for 10 h to obtain white UIO-66.

[0042] Accurately weigh 0.5g of UIO-66 in a 100mL single-hole flask, add 60mL of n-hexane, then dropwise add 0.72mol of methylamine (MA), react at 85°C for 12h under stirring at 320rpm, filter with suction after cooling, and use n-hexane Washing, and finally drying at 110°C for 12 h, the UIO-66@MA metal-organic framework material was obtained, denoted as UIO-66-MA1.

Embodiment 2

[0044] The difference between Example 2 and Example 1 is that the amount of methylamine added is 0.96 mol, and the obtained UIO-66@MA metal organic framework material is denoted as UIO-66-MA2.

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Abstract

The invention provides a UIO-66@MA metal organic framework material and its preparation method and application, belonging to the technical field of metal organic framework materials. The present invention modifies the UIO-66 metal-organic framework material by methylamine (MA), so that the amino group in methylamine and the Zr in UIO-66 4+ Coordination occurs to obtain a metal-organic framework material loaded with methylamine. The invention modifies the UIO-66 metal-organic framework material with methylamine, and the obtained UIO-66@MA metal-organic framework material has good selective fluorescence detection ability and low detection limit for hexanal, and has strong anti-interference ability. The results of the examples show that the detection limit of the UIO-66@MA metal-organic framework material provided by the present invention to hexanal can be as low as 0.815×10 2 ppm.

Description

technical field [0001] The invention relates to the technical field of metal organic framework materials, in particular to a UIO-66@MA metal organic framework material and its preparation method and application. Background technique [0002] At present, among various factors that lead to environmental pollution and destruction, volatile organic compounds (Volatile Organic Compounds, VOCs) have become an important source of air pollution, and are known as one of the three major killers of air pollution today. Among the many VOCs pollutants, aldehyde VOCs are highly harmful pollutants to the human body. The World Health Organization has listed aldehyde VOCs as important environmental pollutants and potential carcinogenic hazards to the human body. Hexanal, as one of the characteristic aldehyde VOCs, will damage the respiratory tract if inhaled into the human body for a long time, thereby damaging the immune system of the human body and increasing the incidence of pneumonia. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06G01N21/643C09K2211/188
Inventor 张志娟李雪黄正旭夏源韩周振
Owner JINAN UNIVERSITY
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