A rare earth terbium-based metal-organic framework material, its synthesis method and its application in antibiotic identification

An organic framework and metal-based technology, applied in the direction of luminescent materials, analytical materials, material excitation analysis, etc., can solve the problems of immature antibiotic removal technology, complex equipment, time-consuming, etc., and achieve easy to repeat large-scale synthesis, easy reaction, and reaction The effect of simple conditions

Active Publication Date: 2021-06-18
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, all of these methods are time-consuming, expensive, and require sophisticated equipment and highly trained personnel
In addition, the removal technology of antibiotics is immature, although various methods including photolysis, hydrolysis, pyrolysis, technical oxidation process, biodegradation, etc., are based on chemical treatment

Method used

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  • A rare earth terbium-based metal-organic framework material, its synthesis method and its application in antibiotic identification
  • A rare earth terbium-based metal-organic framework material, its synthesis method and its application in antibiotic identification
  • A rare earth terbium-based metal-organic framework material, its synthesis method and its application in antibiotic identification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take 0.05mmol of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid, 0.1mmol of terbium nitrate, 8ml of distilled water, and add a stainless steel reactor equipped with a polytetrafluoroethylene lining , 0.3ml of sodium hydroxide aqueous solution (0.1M) was added dropwise, the pH was adjusted to 10, and the reaction was carried out at a constant temperature of 160°C for 72h to obtain colorless bulk crystals, namely 4,4′,4″-s-triazine- 1,3,5-Tris-m-aminobenzoic acid Tb-based metal organic framework material.

[0040] 5 mg of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid Tb-based metal-organic framework material were added to 10 mL containing different antibiotics (FFC, PCL, SMZ, SDZ, In the aqueous solution of FZD, NZF, NFT, CAP, MDZ, ODZ, RDZ, DTZ), ultrasonically vibrate for 30 minutes at room temperature, take out and load into a 4ml cuvette, and test the fluorescence intensity on a fluorophotometer. Figure 4 As shown, metronidazole (MDZ), ornidazole (ODZ), ronidaz...

Embodiment 2

[0042] Take 0.05mmol of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid, 0.1mmol of terbium nitrate, 8ml of distilled water, and add a stainless steel reactor equipped with a polytetrafluoroethylene lining , 0.3ml of sodium hydroxide aqueous solution (0.1M) was added dropwise, the pH was adjusted to 10, and the reaction was carried out at a constant temperature of 160°C for 72h to obtain colorless bulk crystals, namely 4,4′,4″-s-triazine- 1,3,5-Tris-m-aminobenzoic acid Tb-based metal organic framework material.

[0043] 5 mg of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid Tb-based metal-organic framework material were added to 10 mL of different concentrations of metronidazole (MDZ). In the aqueous solution, take it out after 30min of ultrasonic vibration at room temperature, put it into a 4ml cuvette that is transparent on all sides, and test the fluorescence intensity on a fluorescence photometer. Image 6 , 7 As shown, the fluorescence quenching and fluorescence emis...

Embodiment 3

[0045] Take 0.05mmol of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid, 0.1mmol of terbium nitrate, 8ml of distilled water, and add a stainless steel reactor equipped with a polytetrafluoroethylene lining , 0.3ml of sodium hydroxide aqueous solution (0.1M) was added dropwise, the pH was adjusted to 10, and the reaction was carried out at a constant temperature of 160°C for 72h to obtain colorless bulk crystals, namely 4,4′,4″-s-triazine- 1,3,5-Tris-m-aminobenzoic acid Tb-based metal organic framework material.

[0046] 5 mg of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid Tb-based metal-organic framework material were added to 10 mL of ornidazole (ODZ) containing different concentrations. In the aqueous solution, take it out after 30min of ultrasonic vibration at room temperature, put it into a 4ml cuvette that is transparent on all sides, and test the fluorescence intensity on a fluorescence photometer. Figure 8 , 9 As shown, the fluorescence quenching and fluorescenc...

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Abstract

The invention relates to a rare earth terbium-based metal organic framework material, a synthesis method and its application in antibiotic identification. The chemical molecular formula of the metal organic framework material is {[Tb(TATAB)(H 2 O)]·2H 2 O} n , TATAB is an organic ligand 4,4′,4″-s-triazine-1,3,5-three-m-aminobenzoic acid. The basic structural unit contains a free terbium ion and a complete 4,4 ′,4″‑s‑triazine‑1,3,5‑tri‑m-aminobenzoic acid, the three carboxyl groups in the ligand are deprotonated to bridge adjacent terbium ions, and each terbium ion is bound to five ligands It is coordinated with a water molecule, and two carboxyl groups are respectively connected with two different terbium ions to form a three-dimensional network structure. The material is simple to prepare, has a novel structure, is stable in aqueous solution, and can rapidly detect metronidazole (MDZ), ornidazole (ODZ), ronidazole (RDZ), and dimetazole (DTZ) in aqueous solution.

Description

technical field [0001] The invention specifically relates to a metal organic framework material formed by using 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid as an organic ligand and metal terbium as a metal center, and Metronidazole (MDZ), ornidazole (ODZ), ronidazole (RDZ) and dimetazole (DTZ) were rapidly identified by detecting the fluorescence intensity of the compound in aqueous solution containing different antibiotics at room temperature. . Background technique [0002] With increasing concerns about public health and water quality, the need to detect and remove contaminants from wastewater is now greatly increased. Antibiotics, which are widely used to treat bacterial infections in humans and animals, are considered an important organic pollutant. The misuse of antibiotics has led to a large number of antibiotic residues. Various antibiotics have been detected in both surface and groundwater, and even in drinking water. Recent studies show that the total amou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06C09K2211/182G01N21/643G01N2021/6432
Inventor 李东升魏君华易经纬赵君兰亚乾刘云凌
Owner CHINA THREE GORGES UNIV
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