Nano-fiber for adsorbing heavy metal ions and preparation method thereof

A technology for adsorbing heavy metals and nanofibers, which is applied in the fields of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problems of unseen preparations, and achieve good product stability, uniform size, and high-efficiency Good results

Inactive Publication Date: 2016-04-06
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far, no APS (artificialPulmonarySurfactant) has been

Method used

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  • Nano-fiber for adsorbing heavy metal ions and preparation method thereof
  • Nano-fiber for adsorbing heavy metal ions and preparation method thereof
  • Nano-fiber for adsorbing heavy metal ions and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0045] Example 1

[0046] This embodiment provides a method for preparing nanofibers for adsorbing heavy metal ions based on electrospinning technology, which includes the following steps:

[0047] a. In 2000 parts by mass of ethanol, add 20 parts of dipalmitoylphosphatidylcholine, 10 parts of cholesterol, 30 parts of egg yolk lecithin;

[0048] b. Magnetic stirring at 40°C for 30 minutes, stirring until completely dissolved and no obvious lumps;

[0049] c. In 2000 parts by mass of water, add 20 parts of acetic acid, and after mixing uniformly, add 100 parts of chitosan;

[0050] d. Magnetic stirring at room temperature for 12 hours, stirring until completely dissolved and no obvious particles;

[0051] e. Add the solution obtained in b to the solution obtained in d and continue to stir at 50°C for 60 minutes to obtain a mixed solution of chitosan- dipalmitoylphosphatidylcholine;

[0052] f. Add the solution obtained in e to the syringe, and use the existing electrospinning equipment to ...

Example Embodiment

[0054] Example 2

[0055] This embodiment provides a method for preparing nanofibers for adsorbing heavy metal ions based on electrospinning technology, which includes the following steps:

[0056] a. In 2000 parts by mass of ethanol, add 40 parts of dipalmitoylphosphatidylcholine, 10 parts of cholesterol, 50 parts of dilauroylphosphatidylcholine;

[0057] b. Magnetically stir at 50°C for 30 minutes, and stir until it is completely dissolved and there are no obvious lumps;

[0058] c. In 2000 parts by mass of water, add 20 parts of acetic acid, and after mixing uniformly, add 100 parts of chitosan;

[0059] d. Magnetic stirring at room temperature for 12 hours, stirring until completely dissolved and no obvious particles;

[0060] e. Add the solution obtained in b to the solution obtained in d, and continue stirring at 70°C for 60 minutes to obtain a mixed solution of chitosan- dipalmitoylphosphatidylcholine;

[0061] f. Add the solution obtained in e to the syringe (5ml syringe, with a 7...

Example Embodiment

[0063] Example 3

[0064] This embodiment provides a method for preparing nanofibers for adsorbing heavy metal ions based on electrospinning technology, which includes the following steps:

[0065] a. In 2000 parts of ethanol by mass, add 80 parts of dipalmitoylphosphatidylcholine, 100 parts of cholesterol, and 10 parts of soy lecithin;

[0066] b. Magnetically stir at 70°C for 50 minutes, and stir until it is completely dissolved and there are no obvious lumps;

[0067] c. In 2000 parts by mass of water, add 40 parts of acetic acid, and after mixing uniformly, add 80 parts of chitosan;

[0068] d. Magnetic stirring at room temperature for 18 hours, stirring until completely dissolved and no obvious particles;

[0069] e. Add the solution obtained in b to the solution obtained in d, and continue to stir at 50°C for 120 minutes to obtain a mixed solution of chitosan- dipalmitoylphosphatidylcholine;

[0070] f. Add the solution obtained in e to the syringe, and use the existing electrospinn...

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Abstract

The present invention provides a nano-fiber for adsorbing heavy metal ions and a preparation method thereof. The method comprises the steps of: S1. adding 20-80 parts by weight of dipalmitoyl phosphatidylcholine, 10-100 parts by weight of cholesterol and 10-100 parts by weight of phospholipid into 2000 parts by weight of ethanol; and conducting magnetic stirring at 20-70 DEG C until complete dissolution without obvious lumps; S2. adding 20-50 parts of acetic acid in 2000 parts by weight of water, uniformly mixing, adding 40-100 parts by weight of chitosan; conducting magnetic stirring at room temperature until complete dissolution without significant particles; S3. adding the solution obtained in the S1 into the solution obtained in the S2, and continuing stirring to obtain a mixed solution of chitosan-dipalmitoyl phosphatidylcholine; S4. conducting electrostatic spinning by utilizing the mixed solution obtained in the S3 to obtain the nano-fiber. The obtained fiber has the advantages of high efficiency, low cost and adsorption of a large amount of ions.

Description

technical field [0001] The invention relates to the field of preparation of nanomaterials, in particular to a nanofiber for absorbing heavy metal ions based on electrospinning technology and a preparation method thereof. Background technique [0002] Chitosan is a cationic polymer, insoluble in common organic solvents, stable in lye, has strong hydrophilicity, can expand and form gel in dilute hydrochloric acid and dilute acetic acid solutions, and can be made into various A slow-release, controlled-release dosage form (Miyazaki et al., 1988; Sawayanagietal., 1982) has good film-forming properties, and the chitosan film after water swelling is a tough elastic material; because chitin has a strong crystalline structure, it dissolves Chitosan, as a drug carrier, can control the drug release, prolong the curative effect of the drug, reduce the side effects of the drug, improve the permeability of the hydrophobic drug to the cell membrane and the stability of the drug, and chang...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30
Inventor 何丹农易帆乔宇罗孚嘉朱君金彩虹
Owner SHANGHAI JIAO TONG UNIV
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