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Magnetic nanometer ion liquid composite particles as well as preparation method and application thereof

A magnetic nano-ion and composite particle technology, which is applied in the preparation of microspheres, microcapsule preparations, chemical instruments and methods, etc., can solve the problems of limiting the effective use of ionic liquids, small two-phase interface, difficult recovery, etc. Simple operation and high removal efficiency

Inactive Publication Date: 2013-05-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ionic liquids have high viscosity. When extracting organic pollutants in water, the two-phase interface is small and recovery is difficult, which limits the effective use of ionic liquids.

Method used

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  • Magnetic nanometer ion liquid composite particles as well as preparation method and application thereof
  • Magnetic nanometer ion liquid composite particles as well as preparation method and application thereof
  • Magnetic nanometer ion liquid composite particles as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix 1.8g iron oleate, 0.30g oleic acid and 10.2g octadecene, heat to 320°C, stir for 30 minutes, cool to room temperature, add 180mL ethanol to precipitate, centrifuge, and the precipitate is magnetic Fe 3 o 4 Nanoparticles, which are dispersed in n-hexane to obtain magnetic nano-Fe with a concentration of 0.5g / mL 3 o 4 Solution; 1.0mL magnetic nano-Fe 3 o 4 Solution, 1.0mL polyoxyethylene nonylphenyl ether (polymerization degree 520) mixed with 12mL n-hexane and ultrasonically dispersed for 10 minutes, added 0.1mL ammonia water and 0.3mL tetraethyl orthosilicate, stirred at room temperature for 48 hours, Then add 0.3mL N-β-(aminoethyl)-γaminopropyltrimethoxysilane, stir and react for 48 hours at room temperature, and centrifuge to obtain nano-magnetic silica particles with surface amino functionalization; 1.0g The surface amino-functionalized nano-magnetic silica particles and 5.0g functionalized ionic liquid were mixed, stirred and reacted at 30°C for 48 hours; ma...

Embodiment 2

[0030] Mix 4.8g iron oleate, 1.6g oleic acid and 32g octadecene, heat to 300°C, stir for 40 minutes, cool to room temperature, add 720mL ethanol to precipitate, centrifuge, and the precipitate is magnetic Fe 3 o 4 Nanoparticles, which are dispersed in n-hexane to obtain magnetic nano-Fe with a concentration of 0.5g / mL 3 o 4 Solution; 1.0mL magnetic nano-Fe 3 o 4Solution, 1.5mL polyoxyethylene nonylphenyl ether (polymerization degree 520) mixed with 15mL n-hexane and ultrasonically dispersed for 10 minutes, added 0.1mL ammonia water and 0.4mL tetraethyl orthosilicate, stirred at room temperature for 24 hours, Then add 0.4mL 3-aminopropyltriethoxysilane, stir and react at room temperature for 12 hours, and centrifuge to obtain nano-magnetic silica particles with surface amino functionalization; 1.0g surface amino-functionalized nano-magnetic silica particles Silicon microparticles and 5.0 g of functionalized ionic liquid were mixed, and stirred and reacted at 30° C. for 24 h...

Embodiment 3

[0034] Mix 3.6g iron oleate, 0.60g oleic acid and 32g octadecene, heat to 350°C, stir for 20 minutes, cool to room temperature, add 1080mL ethanol to precipitate, centrifuge, and the precipitate is magnetic Fe 3 o 4 Nanoparticles, which are dispersed in n-hexane to obtain magnetic nano-Fe with a concentration of 0.5g / mL 3 o 4 Solution; 2.0mL magnetic nano-Fe 3 o 4 Solution, 4.0mL polyoxyethylene nonylphenyl ether (polymerization degree 520) mixed with 40mL n-hexane and ultrasonically dispersed for 10 minutes, added 0.2mL ammonia water and 1.2mL tetraethyl orthosilicate, stirred at room temperature for 36 hours, Then add 1.8mL 3-aminopropyltriethoxysilane, stir and react for 24 hours at room temperature, and centrifuge to obtain nano-magnetic silica particles with surface amino functionalization; 1.0g surface amino-functionalized nano-magnetic silica particles Silicon oxide particles and 10.0 g of functionalized ionic liquid are mixed, stirred and reacted at 40° C. for 12 h...

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Abstract

The invention discloses magnetic nanometer ion liquid composite particles as well as a preparation method and application of the magnetic nanometer ion liquid composite particles in removing pollutants in water bodies. The preparation method of the magnetic nanometer ion liquid composite particle comprises the following steps of: firstly synthesizing ferric oleate into magnetic Fe3O4 nanometer particles by taking ferric oleate as an iron source and adopting a chemical precipitation method; preparing nanometer nuclear shell type magnetic silicon dioxide with surface amino-functionalization by utilizing the nanometer magnetic particles as a kern, taking ethyl orthosilicate and a silane coupling agent as silicon sources, and utilizing a colloidal sol-gel method; and synthesizing a functionalized ion liquid by utilizing reaction between N, N-carbonyldimidazole (CDI) and an ion liquid containing carboxyl, and thus preparing the magnetic nanometer ion liquid composite particle by utilizing reaction between the functionalized ion liquid and amino on the surface of the magnetic nanometer silicon dioxide; and the method is used for removing pollutants in the water bodies. The method provided by the invention has the advantages that the operation is simple and convenient, the cost is low, the treatment process is simple, and the removal efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a magnetic nano-ionic liquid composite particle, a preparation method thereof and an application in removing pollutants in water bodies. Background technique [0002] With the rapid development of the economy, the pollution of the water environment is becoming more and more serious, and organic pollutants accumulate and persist day by day, which has seriously endangered the health of the ecosystem and the sustainable development of human society. In addition to being difficult to degrade, they also have high biological toxicity and carcinogenic, teratogenic, and mutagenic properties. Therefore, the research and development of efficient and economical new technologies for wastewater treatment has become a focus of concern for environmental protection workers all over the world. [0003] Ionic Liquids (Ionic Liquids) are ionic compounds that are liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02C02F1/26C02F1/58
Inventor 安小宁
Owner SOUTH CHINA UNIV OF TECH
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