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Superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by PSA and preparing method and application thereof

A nano-microsphere and superparamagnetic technology, which is applied in the fields of magnetic solid-phase extraction and organic matter analysis, solid-phase extraction, and inorganic materials, can solve the problems of weak ion exchange ability and cannot be used to extract metal ions, etc., and achieves a simple and effective method. , good practical value and application prospects, the effect of easy separation

Active Publication Date: 2015-04-22
SUZHOU ENRICHING BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the ion exchange capacity of existing magnetic nanoparticles is weak and cannot be used to extract metal ions

Method used

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  • Superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by PSA and preparing method and application thereof
  • Superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by PSA and preparing method and application thereof
  • Superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by PSA and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1. Preparation of materials 1

[0031] The preparation process of the N-propylethylenediamine group (PSA) modified superparamagnetic nano-microsphere of the present invention is as follows:

[0032] To the 1000ml three-necked bottle, add 100mg of ferric tetroxide (Fe(Fe) with a particle size of 500nm) 3 O 4 ) and 500 ml of water, sonicated for 10 minutes. A mixture of 1.0 ml of ethyl orthosilicate (TEOS) and 0.1 ml of N-aminoethyl-3-aminopropyltrimethoxysilane was added dropwise with stirring, heated to 60° C. after the dropwise addition, and incubated for 12 hours.

[0033] After the reaction, the product was separated from the mother liquor, washed with water and ethanol, vacuum filtered and dried to obtain 96 mg of the product.

Embodiment 2

[0034] Example 2. Preparation of materials 2

[0035] The procedure was the same as that of Example 1, and a mixture of 2.0 ml of ethyl orthosilicate (TEOS) and 2.0 ml of N-aminoethyl-3-aminopropyltriethoxysilane was added dropwise.

Embodiment 3

[0036] Embodiment 3, the preparation of material 3

[0037] The steps are the same as in Example 1, using 120nm ferric tetroxide (Fe 3 O 4 ), the reaction temperature was 25°C, and the reaction was kept for 12 hours.

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Abstract

The invention provides a superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by the PSA and a preparing method and application of the superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by the PSA. According to the superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by the PSA and the preparing method and application of the superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by the PSA, silylanization is conducted on the surface of superparamagnetic nanoparticle Fe3O4, a silylating reagent with a PSA structure is bonded, and thus a PSA group is introduced. The superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by the PSA and the preparing method of the superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by the PSA can be applied to the magnetic solid-phase extraction (M-SPE) field, and the superparamagnetic nanoparticle Fe3O4@SiO2@PSA modified by the PSA can serve as an adsorbent which is frequently used for magnetic solid-phase extraction, be applied to various pesticides such as carbamic acid ester, the organophosphorus pesticide and the herbicide and be used for absorption and extraction of target objects such as sulfonamides, organic acid and saccharides; meanwhile, the functional group of the PSA is a good binary ligand, in this way, the PSA is a good chelation material, can be used for extraction of metal ions and has high practical value and broad application prospect in the aspect of analytical investigation.

Description

technical field [0001] The invention belongs to the technical fields of inorganic materials, solid phase extraction (SPE), magnetic solid phase extraction (MSPE) and organic matter analysis, and relates to a superparamagnetic nano-microsphere Fe modified by N-propylethylenediamine (PSA). 3 O 4 SiO 2 PSA, method of preparation and use thereof. Background technique [0002] Solid phase extraction (Solid Phase Extraction, SPE) uses solid adsorbents to adsorb target compounds in liquid samples, separate them from sample matrix and interfering compounds, and then elute with eluent to achieve the purpose of separating and enriching target compounds. . Compared with liquid-liquid extraction, solid-phase extraction (SPE) does not require a large amount of immiscible solvents, and no emulsification occurs during processing. It uses highly efficient and highly selective adsorbents, which can purify small volumes of Samples, can significantly reduce the amount of solvent, simplify ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D15/36B01D15/08
CPCB01D15/08B01D15/361B01J20/06B01J20/103B01J20/22B01J20/28009B01J20/28021B01J2220/46B01J2220/4806B01J2220/4812
Inventor 曲峰袁凯平安新宗洁李士杰
Owner SUZHOU ENRICHING BIOTECH CO LTD
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