Novel method of manufacturing Fe3O4/Pt magnetic complex nano particle

A magnetic composite nano-technology, a new method, applied in the field of preparing Fe3O4/Pt magnetic composite nanoparticles, can solve the problems of iron oxide/Pt that have not been found, and achieve the effects of particle magnetic control, shortened reaction time, and low cost

Inactive Publication Date: 2009-01-14
HUNAN UNIV OF TECH +3
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Problems solved by technology

In 2003, Li et al. prepared Fe-Co magnetic composite nanoparticles with core-shell structure by sonochemical method, and Nikitenko et al. prepared Fe-Fe magnetic composite nanoparticles by sonochemical method. 3 C nanocrystalline particles, we synthesized iron oxide / Au magnetic composite nanoparticles by sonochemical method in 2007, but we have not found any reports on the synthesis of iron oxide / Pt by this method

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  • Novel method of manufacturing Fe3O4/Pt magnetic complex nano particle

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Embodiment approach 1

[0019] The invention relates to a sonochemical method for preparing Fe 3 o 4 / Pt magnetic composite particles. 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 Fe 3 o 4 particles, th...

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Abstract

The invention discloses a novel method used for synchronizing Fe3O4 / Pt magnetic composite nanometer particles, which is characterized in that under the ultrasonic condition, by hydrazine hydrate, platinum ion is reduced onto amido or mercapto functional magnetic nanometer particles, thus realizing the preparation of samples. The method of the invention requires no purification of product, is quick and visible, and is a novel synthesis method with simple and quick operation and high yield.

Description

Technical field [0001] The present invention relates to a kind of preparation Fe 3 o 4 A new approach to Pt / Pt magnetic composite nanoparticles. Background technique [0002] Metal or non-metallic functionalized iron oxide nanoparticles can better protect iron oxide nanoparticles, make them more stable, and greatly extend its scope of use, especially expand its scope of biomedical applications, while metal element (or non-metallic Metal element) in the preparation of functionalized magnetic iron oxide composite nanoparticles, the metal element is mainly concentrated on gold, silver, cobalt, platinum, palladium (Au, Ag, Co, Pt, Pd) and other elemental substances, rather than metal elemental substances The main research is carbon (C) simple substance. For the noble metal Pt, platinum catalysts are widely used in chemical industry, petrochemical industry, environmental treatment, fuel cell and so on. Platinum nanoparticles can effectively improve catalytic activity, catalyt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/11C01G49/08B22F1/02
Inventor 贺全国吴伟胡蓉
Owner HUNAN UNIV OF TECH
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