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Preparation method of temperature sensitive adsorbent of halloysite magnetic composite material surface blotting

A magnetic composite material, surface imprinting technology, applied in material separation, analytical materials, chemical instruments and methods, etc., can solve the problem of low adsorption capacity of rigid tea, limit wide application, etc., to achieve reduced non-specific adsorption, good magnetic and thermal response Good properties, magnetic and thermal stability

Inactive Publication Date: 2012-07-18
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, thermosensitive molecularly imprinted gels have been reported, but their rigidity and low adsorption capacity limit their wide application.
There is no report on the establishment of temperature-sensitive imprinted polymers on the surface of scaffold materials, especially on the surface of magnetic composite materials

Method used

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  • Preparation method of temperature sensitive adsorbent of halloysite magnetic composite material surface blotting
  • Preparation method of temperature sensitive adsorbent of halloysite magnetic composite material surface blotting
  • Preparation method of temperature sensitive adsorbent of halloysite magnetic composite material surface blotting

Examples

Experimental program
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Effect test

Embodiment 1

[0033] (1) Halloysite nanotubes (HNTs) activation method

[0034] Blocky halloysite nanotubes are ground and crushed through 100 sieves, and at 100 o Calcined at high temperature for 18 hours, then the halloysite nanotubes were 70 h in concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 1:3 o C reflux for 6.0h. The final product was washed with double distilled water to neutrality at 60 o Dry at C for later use.

[0035] (2) Preparation of magnetic halloysite nanotube composites (MHNTs)

[0036] Activated halloysite nanotubes were mixed with ferric chloride hexahydrate (FeCl 3 ·6H 2 O), sodium acetate (NaAc) is ultrasonically dissolved and dispersed in ethylene glycol according to the mass ratio of 0.6: 0.25: 1.5, the amount of ethylene glycol added follows the ratio of 80ml per 1.0g of halloysite nanotubes, and the ultrasonic time is 2.0 h; then, add 1.2 g of polyethylene glycol (PEG-1000) per 1.0 g of halloysite nanotubes, add polyethylene gl...

Embodiment 2

[0043] (1) Halloysite nanotubes (HNTs) activation:

[0044] Blocky halloysite nanotubes were ground and crushed through a 100 sieve, and the o Calcined at a high temperature of C for 24h, then the halloysite nanotubes were 80% in concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 1:4 o C was refluxed for 10h, and the final product was washed to neutrality with twice distilled water, at 60 o Dry at C for subsequent use;

[0045] (2) Preparation of magnetic halloysite nanotube composites (MHNTs):

[0046] Activated halloysite nanotubes were mixed with ferric chloride hexahydrate (FeCl 3 ·6H 2O), sodium acetate (NaAc) is ultrasonically dissolved and dispersed in ethylene glycol according to the ratio of mass ratio 1.0: 0.4: 2.5, the amount of ethylene glycol added follows the ratio of 100ml per 1.0g of halloysite nanotubes, ultrasonic time 5.0h; then, according to the ratio of 1.8g polyethylene glycol (PEG-1000) per 1.0g halloysite nanotubes, add...

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Abstract

The invention discloses a preparation method of a temperature sensitive adsorbent of halloysite magnetic composite material surface blotting, belonging to the technical field of environment functional material preparation. The preparation method comprises the following steps: preparing a ferroferric oxide / halloysite nanotube (Fe3O4 / HNTs) magnetic composite material through a simple and effective solvent thermosynthesis method; and then, performing ethylene modification on the magnetic composite material; and preparing the temperature sensitive adsorbent of halloysite nanotube magnetic composite material surface blotting through a radical polymerization process, and utilizing the adsorbent in selective identification and separation of 2,4,5-trichlorophenol in aqueous solution. The prepared temperature sensitive blotting adsorbent has excellent thermal and magnetic stability, sensitive magnetic and thermal induction effect, high adsorption capacity, excellent reversible adsorption / release function with temperature and obvious TCP molecular identification performance.

Description

technical field [0001] The invention relates to a preparation method of a temperature-sensitive adsorbent imprinted on the surface of halloysite nanotube magnetic composite material, which belongs to the technical field of preparation of environmental functional materials. Background technique [0002] Molecular imprinting is a technique for preparing three-dimensional cross-linked polymers with binding sites for predetermined recognition functions. The prepared molecularly imprinted polymers (MIPs) can specifically adsorb template molecules. Surface molecular imprinting technology, by establishing molecular recognition sites on the surface of the matrix material, can better solve some serious defects in the traditional molecular imprinting technology as a whole, such as too deep embedding of active sites, and the dynamics of mass transfer and charge transfer. The chemical rate is slow, the kinetic performance of adsorption-desorption is not good, etc., and the commonly used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C08F292/00C08J9/26G01N21/31G01N30/02C02F1/28C02F101/36
Inventor 潘建明刘燕王柄戴江栋徐龙城李秀秀杭辉闫永胜
Owner JIANGSU UNIV
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