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A double-ligand europium-based metal-organic framework material and its preparation method and application

An organic framework and metal-based technology, which is applied in the field of dual-ligand europium-based metal-organic framework materials and its preparation, can solve the problems of large space occupation, high cost, and complicated operation of detection equipment, and achieve small footprint and low detection cost. The effect of cost and simple operation

Active Publication Date: 2021-11-02
CHINA WEST NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a dual-ligand europium-based metal-organic framework material and its preparation method and application. The dual-ligand europium-based metal-organic framework material is prepared and applied to copper ion Fluorescence detection, which effectively solves the problems of large space occupied by detection equipment, complicated operation and high cost in the prior art

Method used

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  • A double-ligand europium-based metal-organic framework material and its preparation method and application
  • A double-ligand europium-based metal-organic framework material and its preparation method and application
  • A double-ligand europium-based metal-organic framework material and its preparation method and application

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Embodiment 1

[0036] A double-ligand europium-based metal-organic framework material, the preparation method of which comprises the following steps:

[0037] Add europium nitrate hexahydrate, 1,10-phenanthroline and pyridine-3,5-dicarboxylic acid into deionized water, then add 2mol / L sodium hydroxide solution to make it alkaline, and then at 80°C React at constant temperature for 70 hours, cool down to room temperature at a rate of 1°C / h, and finally wash with pure water and absolute ethanol, sonicate and dry in order to obtain double-ligand europium-based metal-organic framework materials;

[0038] Wherein, the mass ratio of europium nitrate hexahydrate, 1,10-phenanthroline and pyridine-3,5-dicarboxylic acid is 130:32:30, and the mass volume of 1,10-phenanthroline and deionized water The ratio is 32:10g / L.

[0039] The application of double-ligand europium-based metal-organic framework materials in the detection of copper ions, the detection method comprising the following steps:

[0040...

Embodiment 2

[0043] A double-ligand europium-based metal-organic framework material, the preparation method of which comprises the following steps:

[0044] Add europium nitrate hexahydrate, 1,10-phenanthroline and pyridine-3,5-dicarboxylic acid into deionized water, then add 2mol / L sodium hydroxide solution to make it alkaline, and then at 85°C React at constant temperature for 72 hours, cool down to room temperature at a rate of 1°C / h, and finally wash with pure water and absolute ethanol, sonicate and dry to obtain double-ligand europium-based metal-organic framework materials;

[0045]Among them, the mass ratio of europium nitrate hexahydrate, 1,10-phenanthroline and pyridine-3,5-dicarboxylic acid is 133.8:36:33.4, and the mass volume of 1,10-phenanthroline and deionized water The ratio is 36:10g / L.

[0046] The application of double-ligand europium-based metal-organic framework materials in the detection of copper ions, the detection method comprising the following steps:

[0047] (...

Embodiment 3

[0050] A double-ligand europium-based metal-organic framework material, the preparation method of which comprises the following steps:

[0051] Add europium nitrate hexahydrate, 1,10-phenanthroline and pyridine-3,5-dicarboxylic acid into deionized water, then add 2mol / L sodium hydroxide solution to make it alkaline, and then at 90°C React at constant temperature for 75 hours, cool to room temperature at a rate of 2°C / h, and finally wash with pure water and absolute ethanol, sonicate and dry in order to obtain double-ligand europium-based metal-organic framework materials;

[0052] Wherein, the mass ratio of europium nitrate hexahydrate, 1,10-phenanthroline and pyridine-3,5-dicarboxylic acid is 135:38:35, and the mass volume of 1,10-phenanthroline and deionized water The ratio is 38:10g / L.

[0053] The application of double-ligand europium-based metal-organic framework materials in the detection of copper ions, the detection method comprising the following steps:

[0054] (1)...

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Abstract

The invention provides a dual-ligand europium-based metal organic framework material and its preparation method and application. The preparation method comprises the following steps: preparing europium nitrate hexahydrate, 1,10-phenanthroline and pyridine-3,5 ‑Dicarboxylic acid is added to deionized water, then 2mol / L sodium hydroxide solution is added to make it alkaline, and then reacted at a constant temperature at 80-90°C for 70-75h, cooled to room temperature, and finally washed, ultrasonicated and dried in sequence. A double-ligand europium-based metal-organic framework material was obtained. The invention also includes the dual-ligand europium-based metal-organic framework material prepared by the above preparation method and its application in copper ion detection. The invention prepares double-ligand europium-based metal-organic framework material and applies it to the fluorescence detection of copper ions, effectively solving the problems of large space occupation, complicated operation and high cost of detection equipment in the prior art.

Description

technical field [0001] The invention belongs to the technical field of heavy metal detection, and in particular relates to a dual-ligand europium-based metal-organic framework material and its preparation method and application. Background technique [0002] The research on heavy metal ions has always been a hot and difficult issue. Sensing and detection of pollutants such as heavy metal ions and small organic molecules play an important role in environmental science, life science, medicine, agriculture and industry. Currently, for Fe 2+ , Fe 3+ 、Cd 2+ , Hg 2+ 、Cr 3+ and Cu 2+ 、Al 3+ The detection of metals such as metals has received considerable attention because of their adverse effects on human health above certain concentrations. [0003] Copper is one of the essential inorganic metal elements for the human body, and its element content ranks third. Copper can accumulate in multiple organs, copper imbalance may be harmful to human health, excessive intake of Cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C09K11/06G01N21/64
CPCC08G83/008C09K11/06C09K2211/182G01N21/643
Inventor 杨秀培胥静张倩刘宇航王亚
Owner CHINA WEST NORMAL UNIVERSITY
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