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Nano-material with optomagnetic double encryption functions and preparation method and application thereof

A double-encryption and nano-material technology, applied in the field of nano-materials, can solve the problems of limited particle surface modification, and achieve low cost, simple preparation method, and good uniformity

Active Publication Date: 2015-03-25
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problems of biocompatibility and stability in the application environment that pure magnetic nanomaterials face in practical applications limit their long-term development. Graphene is embodied in our materials as a protector, but its impact on the entire Particle surface modification is limited

Method used

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  • Nano-material with optomagnetic double encryption functions and preparation method and application thereof
  • Nano-material with optomagnetic double encryption functions and preparation method and application thereof
  • Nano-material with optomagnetic double encryption functions and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of FeCoC particles: Fe(NO 3 ) 3 9H 2 O, Co(NO 3 ) 3 ·6H 2 O and SiO 2 respectively dissolved in methanol, and then according to the mass ratio of Fe(NO 3 )3 9H 2 O:Co(NO 3 ) 3 ·6H 2 O:SiO 2 = 1:1:10 ratio, fully mixed, ultrasonically mixed for 2-5h, spin-dried, grind the spin-dried powder, and then use CH 4 As a carbon source, react by chemical vapor deposition at 800° C. for 8 minutes, and separate to obtain FeCoC particles with a particle size between 7nm and 10nm. The method of the chemical vapor deposition is: first pass into H 2 The temperature was raised to 800°C, and then H 2 and CH 4 React for 8 minutes with a flow ratio of 1:1, and finally stop feeding CH 4 , keep through H 2 Bring to room temperature.

[0036] Preparation of FeCoCPDA particles:

[0037] 1) Prepare FeCoC particles with a particle size between 7nm-10nm and water to make a suspension with a concentration of 0.1mg particles / 1ml water;

[0038] Add 10,12-pentacosadi...

Embodiment 2

[0043] Preparation of FeCoCPDA particles:

[0044] 1) FeCoC particles purchased from the market with a particle size between 7nm and 10nm are mixed with water to prepare a suspension with a concentration of 0.1mg particles / 1ml water;

[0045] Add 10,12-pentacosadiynoic acid, referred to as PCDA, into dimethyl sulfoxide, referred to as DMSO, and prepare a DMSO solution of PCDA with a concentration of 0.1mgPCDA / 4mlDMSO;

[0046] 2) Mix the suspension with the DMSO solution of PCDA so that the mass ratio of FeCoC particles to PCDA is 1:9, mix well, polymerize under ultraviolet 253.7nm, and then remove the solvent DMSO and unreacted PCDA to obtain FeCoCPDA particles . The properties of the obtained FeCoCPDA particles are similar to those of Example 1.

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Abstract

The invention belongs to the technical field of nanometer materials, and relates to a nanometer material with optical, magnetic and dual encryption functions, a preparation method and an application thereof. The nanomaterial uses FeCoC particles as the core, and a layer of poly 10,12-pentacosadiynoic acid, PDA for short, forms a nanomaterial with optical-magnetic double encryption function, FeCoCPDA particles for short. The FeCoCPDA particles have original magnetic properties, and at the same time have optical properties and some synergistic properties, and can be used in the fields of analysis, detection, encryption and the like.

Description

technical field [0001] The invention belongs to the technical field of nano-materials, and relates to a nano-material with optical, magnetic-double encryption functions, a preparation method and an application thereof. Background technique [0002] FeCoC is a magnetic inorganic nanomaterial, which has excellent magnetic properties. At the same time, graphene coated on the surface has great prospects in electricity and mechanics. At the same time, its special structure makes it also have certain applications in optics. In recent years, FeCoC nanoparticles of different sizes have shown great success in different fields. Its magnetic characteristics make it widely used in the enrichment of other substances; combined with the principle of high penetration of the magnetic field, it is applied to magnetothermal therapy, which fully demonstrates the advantages of deep penetration and non-invasiveness of magnetic hyperthermia . At the same time, magnetic resonance imaging technolo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/047C09K11/06
Inventor 陈卓聂祥坤谭蔚泓徐逸婷
Owner HUNAN UNIV