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Preparation and application of zinc ion imprinted polymer adsorbent

A technology of imprinting polymers and zinc ions, which is applied in the directions of alkali metal compounds, alkali metal oxides/hydroxides, inorganic chemistry, etc. The effect of excellent mechanical stability, low production cost, good physical and chemical stability

Inactive Publication Date: 2010-10-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the price of fluorocarbon solution is higher, so the cost of preparation is increased, which increases the cost of actual production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) In a corked Erlenmeyer flask, add 2.2g of zinc acetate and 4.2g of 4-vinylpyridine into the reactor, dissolve them in methanol, and after they are all dissolved, blow in argon for 10 minutes to remove oxygen.

[0024] (2) Add 0.08g of azobisisobutyronitrile and 8.0g of ethylene glycol dimethacrylate to the solution of (1) for 15 minutes of ultrasonic aiding, then feed argon gas for 15 minutes to remove oxygen, seal the triangular flask and isolate it from the air, React in a constant temperature water bath at 60°C for 26 hours to obtain blocky polymer, which is ground into fine particles.

[0025] (3) Wash with 0.1mol / L EDTA (ethylenediaminetetraacetic acid disodium salt) solution for 2 hours in the pH range of 5 to 6 to remove the template molecule Zn(II) ions, then use hydrochloric acid and methanol (volume ratio of 1 : 1) The mixed solution was washed to remove residual organic matter, and finally eluted with water and methanol, filtered to remove fine particles,...

Embodiment 2

[0027] (1) In a corked Erlenmeyer flask, add 2.2g of zinc acetate and 4.2g of 4-vinylpyridine into the reactor, dissolve them in methanol, and after they are all dissolved, blow in argon for 10 minutes to remove oxygen.

[0028] (2) Add 0.08g of azobisisobutyronitrile and 8.0g of ethylene glycol dimethacrylate to the solution of (1) for 15 minutes of ultrasonic aiding, then feed argon gas for 15 minutes to remove oxygen, and seal the conical flask to isolate it from the air. React in a constant temperature water bath at 70°C for 20 hours to obtain blocky polymer, which is ground into fine particles.

[0029] (3) Wash with 0.1mol / LEDTA (ethylenediaminetetraacetic acid disodium salt) solution for 2 hours in the range of pH 5 to 6 to remove the template molecule Zn(II) ions, then use hydrochloric acid and methanol (volume ratio is 1: 1) The mixed solution was washed to remove residual organic matter, and finally eluted with water and methanol, filtered to remove fine particles, a...

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PUM

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Abstract

The invention discloses a preparation method and application of a zinc ion imprinted polymer adsorbent. The preparation method is characterized in that: the preparation method comprises the following steps of: adding zinc acetate, 4-vinyl pyridine, azodiisobutyronitrile and ethylene glycol dimethacrylate in a molar ratio into a triangular flask with a plug; introducing argon in a methanol medium to remove oxygen, and performing a reaction at the constant temperature of 70 DEG C for 20 hours to obtain bulk polymers; grinding the bulk polymers into fine granules; washing the fine granules for 2 hours by using EDTA solution to remove template Zn(II) ions, and washing off residual organic matters by using mixed solution of hydrochloric acid and methanol in a volume ratio of 1:1; and finally performing elution by using water and the methanol, filtering to remove superfine granules, and putting the filtered fine granules in vacuum at the temperature of 60 DEG C for drying. The prepared zinc ion imprinted polymer adsorbent has the specific identification ability, high selectivity, quick adsorption speed and good deabsorption performance on zinc ions, and has excellent physical and chemical stability and mechanical stability, and regeneration capability.

Description

technical field [0001] The invention relates to a preparation method and application technology of an adsorbent for metal ions, in particular to a preparation method and application technology of a zinc ion imprinted polymer. Background technique [0002] Highly selective materials with molecular recognition function have always attracted people's attention. Molecular imprinting technology is currently one of the main methods for preparing highly selective materials. Molecularly imprinted polymers prepared according to this technology have a predetermined and specific recognition performance due to the "memory" function of the three-dimensional structure of imprinted molecules, and have very broad application prospects in the fields of separation science and biomimetic science. With the rapid development of science and technology, people have higher and higher requirements for the separation and determination of metal ions. It is of great practical significance to prepare ...

Claims

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Application Information

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IPC IPC(8): C08F222/14C08F226/06C08F2/44C08J9/26B01J20/26B01J20/30B01J20/28
Inventor 李慧芝许崇娟魏琴罗川南
Owner UNIV OF JINAN
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