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Fe3O4 Au magnetic deposition film preparation method

A technology of fe3o4-au and a new method, which is applied in the field of preparing Fe3O4-Au magnetic deposition thin films, can solve the problems of limiting film material stability and biocompatibility, and achieve shortened reaction time, good biocompatibility and low cost Effect

Inactive Publication Date: 2008-03-19
HUNAN UNIV OF TECH +3
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Problems solved by technology

At present, the main methods of preparing membranes often involve the use of organic solvents, which also limits the stability and biocompatibility of membrane materials, and the methods of using aqueous phase synthesis have been rarely reported.

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  • Fe3O4 Au magnetic deposition film preparation method

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Embodiment approach I

[0020] The present invention relates to a kind of preparation Fe 3 o 4 - A new method for the magnetic deposition of thin films of Au. Specifically as follows: 1) get 2gFeCl respectively 2 4H 2 O and 5.2 g FeCl 3 ·6H 2 O and 0.85 mL of concentrated hydrochloric acid of 12.1 mol / L were dissolved in 200 mL of H 2 O, ultrasonic deoxygenation, and then the above solution was added dropwise to 250mL, 0.75mol / L NaOH solution, all reactions were carried out at a temperature of 80°C, stirring, N 2 under protection. As the reaction progressed, a black precipitate appeared in the reaction solution. After the reaction, the obtained precipitate was separated from the reaction medium by using an external magnetic field, and washed three times with deionized water and twice with ethanol. Finally Fe 3 o 4 Nanoparticles were made into an ethanol solution with a concentration of 5g / L. 2) Dilute the above 25mL solution to 150mL with ethanol and 1mL water, in order to better disperse ...

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Abstract

The invention discloses a novel method for synthesizing Fe3O4-Au magnetic deposited thin film. The method is characterized in that the sample is prepared by continuously reducing metal ions onto the amino- or sulfhydryl-functionalized magnetic nano-particles by using a wet chemistry method. The method can produce the Fe3O4-Au magnetic deposited thin film with rapidness and visualization, and is the novel method with easy operation, rapidness, high yield and good application prospect.

Description

Technical field [0001] The present invention relates to a kind of preparation Fe 3 o 4 - A new method for the magnetic deposition of thin films of Au. Background technique [0002] Magnetic nanoparticles are a new type of material developed in recent years. Due to their special magnetic orientation, superparamagnetism, and the ability to connect biochemically active functional groups on the surface, magnetic nanoparticles are widely used in nucleic acid analysis, clinical diagnosis, and so on. The application of targeted drugs, cell separation and enzyme immobilization has been widely developed. Applying these properties to biosensors can significantly improve the sensitivity of biosensor detection, shorten the time of biochemical reactions, and increase the throughput of detection. It opens up broad prospects for the field of biosensors. In recent years, due to the characteristics of simple preparation, outstanding optical properties and easy modification of gold-magneti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F10/18H01F41/22
Inventor 贺全国吴伟陈洪
Owner HUNAN UNIV OF TECH
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