Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Nano magnetic adsorbent with core-shell structure and preparation method of nano material absorbent

A nano-magnetic, core-shell structure technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of easy loss of magnetic materials, insufficient specific surface area, and unsatisfactory adsorbent effect, etc.

Pending Publication Date: 2021-05-28
毛星星
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The specific surface area of ​​the material in the existing adsorbent is not large enough, and the magnetic material is easy to lose, therefore, the effect of the currently used adsorbent is not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nano magnetic adsorbent with core-shell structure and preparation method of nano material absorbent
  • Nano magnetic adsorbent with core-shell structure and preparation method of nano material absorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A nano-magnetic adsorbent with a core-shell structure, mainly comprising: 13 parts of carboxyl-modified magnetic particles, 10 parts of β-cyclodextrin, 65 parts of modified chitosan, 8 parts of epoxy chlorine propane and 4 parts formaldehyde.

[0038] A preparation method of a nano-magnetic adsorbent with a core-shell structure, the preparation method of the nano-magnetic adsorbent with a core-shell structure mainly includes the following preparation steps:

[0039] (1) Mix cholesterol and pyridine in a beaker at a mass ratio of 1:35, and add succinic anhydride that is 1 to 1.2 times the mass of cholesterol to the beaker, stir and react at a temperature of 72°C for 3 hours, then concentrate by rotary evaporation, To obtain the modified cholesterol base, mix the modified cholesterol base with 95% ethanol aqueous solution at a mass ratio of 1:10, and filter to obtain the modified cholesterol;

[0040] (2) Mix the modified cholesterol and chitosan solution obtained in ste...

Embodiment 2

[0049] A nano-magnetic adsorbent with a core-shell structure, mainly comprising: 13 parts of magnetic particles, 10 parts of β-cyclodextrin, 65 parts of modified chitosan, 8 parts of epichlorohydrin and 4 parts by weight. part formaldehyde.

[0050] A preparation method of a nano-magnetic adsorbent with a core-shell structure, the preparation method of the nano-magnetic adsorbent with a core-shell structure mainly includes the following preparation steps:

[0051] (1) Mix cholesterol and pyridine in a beaker at a mass ratio of 1:35, and add succinic anhydride that is 1 to 1.2 times the mass of cholesterol to the beaker, stir and react at a temperature of 72°C for 3 hours, then concentrate by rotary evaporation, To obtain the modified cholesterol base, mix the modified cholesterol base with 95% ethanol aqueous solution at a mass ratio of 1:10, and filter to obtain the modified cholesterol;

[0052] (2) Mix the modified cholesterol and chitosan solution obtained in step (1) in ...

Embodiment 3

[0061] A nano-magnetic adsorbent with a core-shell structure, mainly comprising: 13 parts of carboxyl-modified magnetic particles, 10 parts of β-cyclodextrin, 65 parts of chitosan, 8 parts of epichlorohydrin and 4 parts formaldehyde.

[0062] A preparation method of a nano-magnetic adsorbent with a core-shell structure, the preparation method of the nano-magnetic adsorbent with a core-shell structure mainly includes the following preparation steps:

[0063] (1) Chitosan and racemic polylactic acid are mixed in dimethyl sulfoxide which is 8 times the mass of polylactic acid at a mass ratio of 1:1. After mixing and dialysis, the dialysis product is freeze-dried to obtain pretreated microspheres;

[0064](2) Mix the pretreated microspheres obtained in step (1) with water at a mass ratio of 1:12, add epichlorohydrin 0.15 times the mass of the pretreated microspheres, and stir for 4 hours at a temperature of 50°C , and filtered to obtain microsphere blanks. Dry the microsphere bla...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
quality scoreaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nano magnetic adsorbent with a core-shell structure and a preparation method of the nano magnetic adsorbent, and relates to the technical field of new materials. The preparation method comprises the following steps: preparing modified cholesterol from cholesterol and succinic anhydride under the catalysis of pyridine, preparing modified chitosan from chitosan and modified cholesterol under the action of a catalyst, carrying out mixed dialysis and freeze drying on the modified chitosan and polylactic acid to prepare pretreated microspheres, cross-linking the pretreated microspheres with epichlorohydrin, dissolving with acetone, adding a formaldehyde mixed solution, heating to evaporate a solvent to prepare a microsphere mixture, crosslinking the microsphere mixture with epichlorohydrin, mixing with an acid solution, adding carboxyl modified magnetic particles, stirring and mixing, and crosslinking with epichlorohydrin to prepare the nano magnetic adsorbent with the core-shell structure. The nano magnetic adsorbent with the core-shell structure prepared by the invention has a relatively large specific surface area and long-acting magnetism.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a nano magnetic adsorbent with a core-shell structure and a preparation method thereof. Background technique [0002] In recent years, due to people's non-standard production measures and unreasonable living habits, a large amount of industrial wastewater and domestic sewage containing phosphate have been discharged into rivers and lakes, causing eutrophication of water bodies, causing excessive algae and other plankton in the water Reproduction, resulting in a sharp decrease in dissolved oxygen concentration in water, water quality continues to deteriorate, fish and other aquatic organisms die in large numbers, not only seriously destroys the ecological balance of the water body, but also affects the quality of urban water supply and increases the cost of water production, threatening people's drinking water safety and Healthy body. Therefore, the removal of phosphate in wastewater...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/28B01J20/26B01J20/24C02F1/28C02F101/10
CPCB01J20/24B01J20/267B01J20/28007B01J20/28009B01J20/28021C02F1/281C02F1/285C02F1/286C02F2101/105
Inventor 毛星星
Owner 毛星星
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com