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Nano metal particles in high density and preparation method

A technology of nano-metal particles and metal particles, which is applied in the field of modified nano-gold or platinum and its preparation, and can solve the problems of poor water solubility and inability to use

Inactive Publication Date: 2008-11-12
江征平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 1996, the British scientist Brust proposed the method of synthesizing gold nanoparticles in the solvent phase. Although it can increase the content of the particles, it still cannot be used in industries such as conductive coatings or inks due to its poor water solubility.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: formula 1, chloroauric acid HAuCl4 300mg; Tetraoctylammonium bromide tetraoctylammonium bromideTOAB 2g; Toluene 30ml; Sodium borohydride, NaBH4 0.6mol / L; 4-dimethylaminopyridine 4-dimethylamino-pyridine (DMAP ) 30ml.

Embodiment 2

[0013] Embodiment 2: formula 2, chloroplatinic acid H2PtCl6 200mg; Tetra-n-octyl ammonium bromide 2g; Toluene 30ml; Sodium borohydride 0.6mol / L; 4-dimethylaminopyridine 30ml

Embodiment 3

[0014] Example 3: formula 3, 20 mg of chloroplatinic acid; 3 g of tetra-n-octyl ammonium bromide; 40 ml of toluene; 0.6 mol / L of sodium borohydride; 30 ml of 4-dimethylaminopyridine.

[0015] The present invention belongs to an improvement to the prior art. In addition to modifying the nanoparticles, it is important to add a novel aniline derivative, which can adjust the surface morphology of the nanoparticles in the aqueous solution and the pH value of the aqueous solution. In addition, this stabilizer can be replaced by biological polyelectrolyte molecules at any time, which can improve the biocompatibility and processability of the nanoparticles.

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PUM

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Abstract

A high-concentration metal nanoparticle product is prepared through proportionally mixing metal salt, toluene and dimethyl aminopyridine, adding sodium borohydride, reduction reaction to obtain metal particles, and transferring them into water under the protection of phenylamine derivative phase to obtain the target product composed of metal nanoparticles and surface stabilizer.

Description

Technical field: [0001] The invention relates to a metal nano particle and a preparation method thereof, in particular to a modified nano-gold or platinum and a preparation method thereof. Background technique: [0002] Gold particle solution is widely used in biological fields such as immunity, sensing, dyeing, catalysis, and DNA hybridization, mainly because of its good biocompatibility, stability, and its surface plasmon resonance in the visible range. In addition, due to the development of the electronic printing industry, the demand for high-concentration gold or silver nanoparticles is gradually increasing. But although there are many ways to synthesize gold, there are few ways to obtain nano-gold colloids that are stable in water and high in concentration. The traditional method of synthesizing gold particles is to reduce the solution of gold salt at high temperature, but the content of the particles obtained in this way is relatively low, 0.001%. In 1996, the Briti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/00
Inventor 江征平
Owner 江征平