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Preparation and application of magnetic metal organic framework nanosheet material

An organic framework and magnetic metal technology, applied in the fields of alkali metal compounds, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problems of long operation process and easy clogging of extraction columns, and achieve simple design and expansion Variety, good reproducibility and reproducible effects

Inactive Publication Date: 2018-08-28
FUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

SPE has the advantages of easy operation and less solvent consumption, but it also has the disadvantages of easy clogging of the extraction column and long operation time.

Method used

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  • Preparation and application of magnetic metal organic framework nanosheet material

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Embodiment 1

[0018] A method for preparing a magnetic metal-organic framework nanosheet material, comprising the steps of:

[0019] 1.1 Disperse 0.3 g nano-magnetic beads (with a diameter of 300-400 nm) in 300 ml of chloroform dissolved in 7.5 g of polyvinylpyrrolidone, stir mechanically for 24 hours, collect the magnetic beads and wash them with chloroform and methanol, and disperse them in methanol middle;

[0020] 1.2 Disperse the modified nano-magnetic beads synthesized in step 1.1 in 7.5 ml of methanol dissolved with 0.108 g of copper nitrate and 0.26 g of cobalt nitrate. After the dispersion is uniform, add 0.41 g / ml of 2-methyl 7.5 ml of methanol solution of imidazole was reacted with ultrasonic vibration for 1 h, then washed with methanol and dispersed in methanol.

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Abstract

The invention belongs to the technical field of a solid phase extraction adsorbent, and particularly relates to preparation and application of a magnetic metal organic framework nanosheet material. The preparation method comprises the following steps that 1, nanometer magnetic beads are dispersed in a mixed solution of polyvinylpyrrolidone and trichloromethane; mechanical stirring is performed for24h; the nanometer magnetic beads are collected and are cleaned by trichloromethane and methanol; modified nanometer magnetic beads are obtained and are then dispersed in the methanol for later use;2, the modified nanometer magnetic beads synthesized in the first step are dispersed in the methanol mixed solution containing copper nitrate and cobalt nitrate; after uniform dispersion, a methanol solution containing 2-methylimidazole is added under the ultrasonic concussion condition; ultrasonic concussion reaction is performed for 1h; then, the methanol is used for cleaning; the magnetic metalorganic framework nanosheet material is obtained and is dispersed in methanol for later use. The nanosheet material has more open surfaces and rich metal sites; fast separation can be realized afterthe adsorption.

Description

technical field [0001] The invention belongs to the technical field of solid-phase extraction adsorbents, and in particular relates to the preparation and application of a magnetic metal-organic framework nanosheet material. Background technique [0002] Algae are the oldest organisms on the earth. They have large differences in shape and simple structure. Generally, there are more types in the ocean than in fresh water. Algae have a variety of nutrition and reproduction methods. They can grow rapidly under suitable conditions, and gather on the water surface under the action of their own buoyancy and hydrological factors, forming algae liquid visible to the naked eye, that is, "red tide" (Red Tide) tide) or "Water-bloom". "Red tides" or "water blooms" are mostly toxic algae, and their occurrence causes great harm to the environment and aquaculture industry, and is regarded as a worldwide public nuisance. Chemical analysis is a commonly used method for the detection of dom...

Claims

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Application Information

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IPC IPC(8): B01J20/28B01J20/22B01J20/30B01D15/08
CPCB01D15/08B01J20/226B01J20/28007B01J20/28009
Inventor 张兰王昱杰黄川辉童萍卢巧梅陈晖林明霞
Owner FUZHOU UNIV
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