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A zirconium-based metal-organic framework material, its preparation and its application in the treatment of nitrofuran antibiotics

An organic framework and nitrofuran technology, which is applied in the preparation of zirconium-based metal organic framework materials, the detection and treatment of nitrofuran antibiotics, and can solve the problem that the UiO series has dual functions of detection and adsorption of antibiotics. and other problems, to achieve the effect of good structural water stability, cheap raw materials, and simple synthesis steps

Active Publication Date: 2022-05-20
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although three water-stable bifunctional Zr-MOFs (BUT-12 / 13 and PCN-128Y) have been reported (see references 1, 2), no UiO series have dual functions for both detection and adsorption of antibiotics. Related reports on functional metal-organic frameworks

Method used

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  • A zirconium-based metal-organic framework material, its preparation and its application in the treatment of nitrofuran antibiotics
  • A zirconium-based metal-organic framework material, its preparation and its application in the treatment of nitrofuran antibiotics
  • A zirconium-based metal-organic framework material, its preparation and its application in the treatment of nitrofuran antibiotics

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: A kind of preparation method based on metal-organic framework Zr-fcu-sti detection water body nitrofuran antibiotics:

[0041] Step (1) Preparation of metal organic framework Zr-fcu-sti: 15mL DMF solvent in 50mL polytetrafluoroethylene lined reactor, add trans-4,4'-stilbene dicarboxylic acid (0.45mmol), ZrCl 4 (0.45mmol), L-proline (2mmol) and 45μL concentrated HCl. Heated at 120°C for 16h, cooled naturally, and centrifuged to collect the precipitate. The precipitate was washed with 10mL DMF and 10mL methanol respectively, repeated 3 times, and air-dried to obtain the metal organic framework Zr-fcu-sti;

[0042] Carry out XRD test and SEM test to the prepared Zr-fcu-sti sample, as respectively figure 1 and figure 2 shown. XRD pattern ( figure 1 ) shows that the synthesized material has good crystallinity and has the same crystal structure as UiO-66. Such as figure 2 As shown, Zr-fcu-sti has a regular octahedral crystal form, which is also similar ...

Embodiment 2

[0049] Example 2: A method for adsorbing nitrofuran antibiotics in water based on metal organic framework Zr-fcu-sti:

[0050] Take the metal-organic framework Zr-fcu-sti obtained in step (1), soak it in methanol for 72 hours (during which, replace it with fresh methanol every 12 hours), dry it under vacuum at a temperature of 100°C and a pressure of Figure 10, as shown in 11. Another weighed 1.5 mg of activated Zr-fcu-sti was placed in 3 mL of 30-150 mg / L nitrofurazone or nitrofurantoin aqueous solution, stirred at room temperature (25°C) at 800 rpm for 6 h, filtered through a 0.45 μm water filter, and the filtrate Measure the absorbance at 375nm (nitrofurantoin) and 366nm (nitrofurantoin) with an ultraviolet spectrophotometer, and calculate the corresponding concentration and adsorption capacity according to the absorbance-concentration standard curve, the results are as follows Figure 12 shown.

[0051] Such as Figure 10 and Figure 11 As shown, Zr-fcu-sti adsorption ...

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Abstract

The invention belongs to the technical field of metal-organic framework materials, and in particular relates to the preparation of a zirconium-based metal-organic framework material and its application to the detection and adsorption of nitrofuran antibiotics in water. The present invention is based on trans-4,4'-stilbene dicarboxylic acid and zirconium chloride to synthesize a dual-functional UiO series metal-organic framework—Zr-fcu-sti, which simultaneously detects and adsorbs antibiotics, and can achieve low detection limits. Highly selective fluorescence detection and rapid, high-capacity adsorption removal of nitrofuran antibiotics from water.

Description

technical field [0001] The invention belongs to the technical field of metal-organic framework materials, and in particular relates to the preparation of a zirconium-based metal-organic framework material and its application to the detection and treatment of water body pollutants-nitrofuran antibiotics. Background technique [0002] At present, the abuse of antibiotics in livestock and poultry and medical fields is widespread, which in turn leads to their continuous enrichment in various water bodies, soils and sediments. On the one hand, the toxic and side effects of antibiotics themselves may lead to hereditary genetic defects, decreased immunity, various cancers and allergic reactions in humans; on the other hand, antibiotics that exist in the natural environment for a long time may lead to severe drug resistance of bacteria It seriously affects the ecosystem and threatens the micro-ecological balance and human health. [0003] Metal-organic frameworks (abbreviation: MOF...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J20/22B01J20/30C02F1/28G01N21/64C02F101/34C02F101/38
CPCC08G83/008B01J20/226C02F1/285G01N21/6428C02F2101/34C02F2101/38G01N2021/6432
Inventor 王素华苏鹏辰陈中山余龙葛宏伟彭俊翔
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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