Hybrid nanoparticle with pH and magnetic responsiveness and preparation method thereof and application of hybride nanoparticle in nano oil-water separation emulsion

A technology of hybrid nano-particles and magnetic responsiveness, which is applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of insufficient oil absorption capacity and washing of reduced and recovered materials, and achieve high The effect of oil absorption efficiency

Inactive Publication Date: 2017-06-13
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the oil absorption capacity of recycled materials may be reduced due to insufficient washing

Method used

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  • Hybrid nanoparticle with pH and magnetic responsiveness and preparation method thereof and application of hybride nanoparticle in nano oil-water separation emulsion
  • Hybrid nanoparticle with pH and magnetic responsiveness and preparation method thereof and application of hybride nanoparticle in nano oil-water separation emulsion
  • Hybrid nanoparticle with pH and magnetic responsiveness and preparation method thereof and application of hybride nanoparticle in nano oil-water separation emulsion

Examples

Experimental program
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Effect test

Embodiment 1

[0036] with anhydrous CH 2 Cl 2 As a solvent, use 2-bromoisobutyryl bromide to esterify the amino terminal group of PDMS, use triethylamine as an acid binding agent, stir the reactant at room temperature for 24 h, then wash the resulting solution with aqueous sodium bicarbonate for 3 times, the organic layer was separated and washed with anhydrous MgSO 4 Dry, filter after 4h, and vacuum-dry the product at 40°C to obtain the ATRP macroinitiator PDMS-diBr; add 0.56g PDMS-diBr, 72.8mg PMDETA and 2.28g 4-VP into the Schlenk reaction tube, and seal it with a rubber stopper, The oxygen in the reaction tube was removed by freeze-thaw-degassing and nitrogen filling-exhausting method. After repeated 3 times, 57.6mg CuBr and 5.0mL degassed ethanol / THF solution with a volume ratio of 1:1 were added to Into the reaction tube, polymerize at 75°C for 24h under stirring conditions, terminate the reaction by diluting the reaction mixture with THF and open it to the atmosphere, pass the reac...

Embodiment 2

[0039]Add 2.5mmol iron(III) acetylacetonate and 20mmol oleic acid into a three-necked round-bottomed flask containing 12.8mL octadecene, heat the resulting mixture to 160°C for 30min under the protection of argon, and then heat it at 5°C / The heating rate of min was raised to 320 °C for 60 min, then the mixture was cooled to room temperature, centrifuged, and the product was washed with n-hexane / isopropanol to obtain magnetic Fe 3 o 4 Nanoparticles.

Embodiment 3

[0041] 100mg Fe dispersed in 5.0mL cyclohexane 3 o 4 The particles were added to a 12.5mL Erlenmeyer flask containing 7.5g of IPEGAL CO-520 cyclohexane, the mixture was stirred at room temperature for 60min, and 150uL of ammonia water with a mass concentration of 28% was added to form a brown microemulsion, and the stirring was continued for 60min before adding 250 μL TEOS was reacted overnight and the final product was collected by centrifugation and washed with a water / ethanol mixture to obtain Fe 3 o 4 @SiO 2 Nanoparticles.

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Abstract

The invention discloses a Fe3O4@SiO2@P4VP-PDMS-P4VP hybrid nanoparticle with pH and magnetic responsiveness and a preparation method thereof and an application of the hybrid nanoparticle in a nano oil-water separation emulsion. The Fe3O4@SiO2@P4VP-PDMS-P4VP hybrid nanoparticle is obtained by coupling reaction of a pyridine group on a P4VP block in a P4VP-PDMS-P4VP triblock copolymer with pH responsiveness with a C-I active group on the superparamagnetic iron oxide nanoparticles Fe3O4@SiO2 surface and bonding the P4VP-PDMS-P4VP triblock copolymer into the Fe3O4@SiO2 nanoparticle surface. The invention further specifically discloses the preparation method of the Fe3O4@SiO2@P4VP-PDMS-P4VP hybrid nanoparticle and the application of the Fe3O4@SiO2@P4VP-PDMS-P4VP hybrid nanoparticle in the nano oil-water separation emulsion. Due to the action of the central Fe3O4magnetic nanoparticle, the hybrid nanoparticle absorbing oil content can be easily separated from an aqueous system, and the oil absorbed hybrid nanoparticle can be recycled in an acid aqueous solution after absorption.

Description

technical field [0001] The invention belongs to the field of macromolecular chemistry and polymer technology, and in particular relates to a pH- and magnetic-responsive Fe 3 o 4 @SiO 2 @P4VP-PDMS-P4VP hybrid nanoparticles and its preparation method and application in the separation of nano-oil-water emulsion. Background technique [0002] In recent years, water pollution caused by oil has attracted more and more attention due to the discharge of industrial oily wastewater and the frequent occurrence of crude oil spills. Finding an environmentally friendly and efficient method to separate oil from water has become a great challenge, especially for the separation of very stable nanoemulsified oil-water mixtures. [0003] In practical applications, a variety of hydrophobic / oleophilic oil-absorbing materials are often used to absorb oil from water. However, due to the poor selectivity of the absorption of these materials, some water is also absorbed when the oil is adsorbed,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F226/06C02F1/28
CPCC02F1/285C08F226/06C08F293/005
Inventor 凡小山曹萌雅胡志国
Owner HENAN NORMAL UNIV
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