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

Method for synthesizing series single-dispersed ferrite nanometer magnetic beads

A technology of nano-magnetic beads and ferrite, which is applied in the direction of nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of insufficient dispersion and uneven product size distribution, and achieve large performance control space and product shape Uniform, broad application prospects

Inactive Publication Date: 2005-07-27
TSINGHUA UNIV
View PDF0 Cites 71 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the particle size of the product is small, the size distribution of the product is not uniform, and the dispersion is not good enough, so it is easy to agglomerate

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
  • Method for synthesizing series single-dispersed ferrite nanometer magnetic beads
  • Method for synthesizing series single-dispersed ferrite nanometer magnetic beads
  • Method for synthesizing series single-dispersed ferrite nanometer magnetic beads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Take 16mmol of FeCl 3 , added to a 50 ml hydrothermal kettle, 40 ml of ethylene glycol solution was added to the kettle, after dissolving, heated at 200°C for 72 hours, the obtained black precipitate was washed with deionized water, dried at 40-80°C, and prepared Ferric oxide nano-magnetic beads with a particle diameter of 100-1000 nanometers are obtained.

[0037] Reduce FeCl 3 The usage amount is up to 2mmol, and a similar product is prepared through the same process;

[0038] Ferric sulfate, ferric nitrate, and ferric acetate are used to replace ferric chloride, and similar products are obtained through the same process.

Embodiment 2

[0040] Take 8mmol of manganese chloride and 16mmol of FeCl 3 Added to 50 ml of water heating kettle, at this time Mn 2+ with Fe 3+ The molar ratio is 1:2. Add 40 ml of ethylene glycol solution to the kettle, stir and heat at 250°C for 18 hours, wash the obtained precipitate with deionized water, and dry it at 40-80°C to obtain MnFe 2 o 4 nano magnetic beads.

[0041] Control the molar ratio of divalent metal ions to iron ions to be 1:2, the same process is applicable to Ni2+ , Cu 2+ , Zn 2+ , Cd 2+ , Pb 2+ , Sn 2+ , Ca 2+ ,Sr 2+ , Ba 2+ , Cd 2+ , Mg 2+ ,Co 2+ The reaction of soluble salts of divalent metal ions and soluble ferric ion salts, finally forming NiFe 2 o 4 , CuFe 2 o 4 , ZnFe 2 o 4 , CdFe 2 o 4 , PbFe 2 o 4 , SnFe 2 o 4 , CaFe 2 o 4 , SrFe 2 o 4 , BaFe 2 o 4 , CdFe 2 o 4 , MgFe 2 o 4 , CoFe 2 o 4 and other ferrite nano-magnetic beads.

Embodiment 3

[0043] Weigh 0.08mmolMnCl 2 and 16mmol of FeCl 3 , added to a 50 ml water heating kettle, at this time Mn 2+ with Fe 3+ The molar ratio is 0.01:2, 40 ml of ethylene glycol solution is added to the kettle, heated at 300°C for 8 hours, the obtained precipitate is washed with deionized water, and dried at 40-80°C to obtain Mn x Fe 3-x o 4 Manganese ferrite compound nano magnetic beads.

[0044] control Mn 2+ The molar ratio to iron ions is x:2, where 0.01<x<1, and manganese ferrite nano magnetic balls with other ratios are prepared.

[0045] Control the molar ratio of divalent metal ions to iron ions to be x: 2, where 0.12+ , Cu 2+ , Zn 2+ , Cd 2+ , Pb 2+ , Sn 2+ , Ca 2+ ,Sr 2+ , Ba 2+ , Cd 2+ , Mg 2+ ,Co 2+ The reaction of soluble salts of divalent metal ions and soluble ferric ion salts, and finally the formation of Ni x Fe 3-x o 4 , Cu x Fe 3-x o 4 , Zn x Fe 3-x o 4 , Cd x Fe 3-x o 4 , Pb x Fe 3-x o 4 , Sn x Fe 3-x o 4 , Ca x Fe 3-x o 4 ,S...

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

No PUM Login to View More

Abstract

The invention takes ferric ion salt as raw material, which is taken solvent thermal reaction under 200-300deg.C to form Fe3O4 nanometer magnetic bead. At same reaction condition, through adding one or more kind of divalent soluble metal ion salt to make reaction with ferric ion salt and controlling the level of addition, the mol ration between the divalent soluble metal ion salt and ferric ion, the ferrite nanometer magnetic bead and the compound ferric ion nanometer magnetic bead are formed.

Description

technical field [0001] The invention relates to a method for synthesizing a series of ferrite nano-magnetic beads, belonging to the technical field of inorganic material preparation technology. Background technique [0002] As a soft magnetic material, spinel ferrite has been widely used in mutual inductance devices, magnetic core bearings and magnetic recording materials. At present, with the development of technology, the scope of practical application of spinel ferrite is becoming more and more extensive. For example, it has been practically used as a catalyst in the oxidative dehydrogenation of ammonia and butene. In recent years, it has been found that when the size of materials reaches the nanoscale stage, different properties from bulk materials often appear. Recently, Kobe University School of Medicine in Japan used nano ferrite magnetic beads to treat liver cancer and kidney cancer successfully. This shows that ferrite can be used as an anticancer drug carrier an...

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
IPC IPC(8): B22F9/16B82B3/00H01F41/02
Inventor 李亚栋邓洪
Owner TSINGHUA UNIV
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