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Rare-earth terbium-based metal organic framework material, synthesis method and application thereof to antibiotics identification

A metal-organic framework and organic framework technology, which is applied in the fields of analytical materials, luminescent materials, and material excitation analysis, can solve the problems of immature antibiotic removal technology, complex equipment, and time-consuming, and achieve easy-to-repeat large-scale synthesis and easy-to-control reactions , the effect of simple reaction conditions

Active Publication Date: 2019-03-01
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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  • Rare-earth terbium-based metal organic framework material, synthesis method and application thereof to antibiotics identification
  • Rare-earth terbium-based metal organic framework material, synthesis method and application thereof to antibiotics identification
  • Rare-earth terbium-based metal organic framework material, synthesis method and application thereof to antibiotics 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, and 8ml of distilled water, and add them to a stainless steel reaction kettle with a polytetrafluoroethylene liner Add 0.3ml of aqueous sodium hydroxide solution (0.1M) dropwise, adjust the pH to 10, and react at a constant temperature of 160°C for 72h to obtain colorless blocky crystals, namely 4,4′,4″-s-triazine- 1,3,5-tri-m-aminobenzoic acid Tb-based metal-organic framework materials.

[0040] Add 5 mg of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid Tb-based metal-organic framework material to 10 mL containing different antibiotics (FFC, PCL, SMZ, SDZ, FZD, NZF, NFT, CAP, MDZ, ODZ, RDZ, DTZ) in the aqueous solution, room temperature ultrasonic vibration 30 minutes, take out and pack in the 4ml cuvette, test fluorescence intensity on the fluorescence photometer. Figure 4 As shown, metronidazole (MDZ), ornidazole (ODZ), ronidazole (RDZ), and dimetazole (DTZ) can be easi...

Embodiment 2

[0042] Take 0.05mmol of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid, 0.1mmol of terbium nitrate, and 8ml of distilled water, and add them to a stainless steel reaction kettle with a polytetrafluoroethylene liner Add 0.3ml of aqueous sodium hydroxide solution (0.1M) dropwise, adjust the pH to 10, and react at a constant temperature of 160°C for 72h to obtain colorless blocky crystals, namely 4,4′,4″-s-triazine- 1,3,5-tri-m-aminobenzoic acid Tb-based metal-organic framework materials.

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

Embodiment 3

[0045] Take 0.05mmol of 4,4′,4″-s-triazine-1,3,5-tri-m-aminobenzoic acid, 0.1mmol of terbium nitrate, and 8ml of distilled water, and add them to a stainless steel reaction kettle with a polytetrafluoroethylene liner Add 0.3ml of aqueous sodium hydroxide solution (0.1M) dropwise, adjust the pH to 10, and react at a constant temperature of 160°C for 72h to obtain colorless blocky crystals, namely 4,4′,4″-s-triazine- 1,3,5-tri-m-aminobenzoic acid Tb-based metal-organic framework materials.

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

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Abstract

The invention relates to a rare-earth terbium-based metal organic framework material, a synthesis method and application thereof to antibiotics identification. A chemical molecular formula of the metal organic framework material is {[Tb(TATAB)(H2O)].2H2O}n, wherein TATAB is an organic ligand 4,4',4''-s-triazine-1,3,5-tri-m-aminobenzoic acid. A basic structure unit contains one free terbium ion andone complete 4,4',4''-s-triazine-1,3,5-tri-m-aminobenzoic acid; protons of three carboxyl groups in the ligand are removed and then the carboxyl groups are bridged with the adjacent terbium ion; eachterbium ion is coordinated with five ligands and one water molecule, wherein two carboxyl groups are connected with two different terbium ions respectively to form a three-dimensional network structure. The material is simple to prepare, novel in structure and is stable in a water solution; the material can be used for rapidly detecting metronidazole (MDZ), ornidazole (ODZ), ronidazole (RDZ) anddimetridazole (DTZ) in the water solution.

Description

technical field [0001] The present invention specifically relates to a metal-organic framework material formed with 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) can be quickly identified by detecting the fluorescence intensity of the compound in an aqueous solution system containing different antibiotics at room temperature . Background technique [0002] With increasing public health and water quality concerns, 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 to be an important organic pollutant. The abuse of antibiotics has resulted in a large number of antibiotic residues. Various antibiotics were detected in both surface and ground water, and even in drinking water. Recent studies have sho...

Claims

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Application Information

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Patent Type & Authority Applications(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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