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Method for preparing alloy nanoparticle

An alloy nanoparticle and nanoparticle technology, which is applied in the field of preparation of inorganic metal nanomaterials, can solve problems such as inability to achieve mass production, and achieve the effects of excellent stability, controllable components and low price.

Active Publication Date: 2018-09-25
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing research only stays in the stage of batch preparation in the laboratory, and cannot achieve mass production

Method used

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  • Method for preparing alloy nanoparticle
  • Method for preparing alloy nanoparticle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare AuAg alloy nanorods, the specific process is as follows:

[0039] 1. The cetyltrimethylammonium bromide of 0.7g, the sodium oleate of 0.124g, the silver nitrate that 1.6mL concentration is 4mmol / L, 0.984mL concentration are the chloroauric acid of 25.4mmol / L and 0.3mL Concentrated hydrochloric acid was added to 50mL of water, and after it was completely dissolved, 0.125mL of ascorbic acid with a concentration of 64mmol / L was added to it, and then 60uL of gold seed solution was added; after standing for 5-6h, the obtained brown liquid was centrifuged to obtain Au nanorods.

[0040] 2. Disperse the obtained Au nanorods in 30mL of cetyltrimethylammonium chloride solution with a concentration of 80mmol / L, add 1mL of a silver nitrate solution with a concentration of 10mmol / L, and then add 0.5mL of a concentration of 100mmol / L L ascorbic acid. The above solution was placed in a water bath at 65° C. and kept stirring for 3 h. After the reaction was completed, centri...

Embodiment 2

[0045] Prepare AuPd alloy nanorods, the specific process is as follows:

[0046] 1. The cetyltrimethylammonium bromide of 0.7g, the sodium oleate of 0.124g, the silver nitrate that 1.6mL concentration is 4mmol / L, 0.984mL concentration are the chloroauric acid of 25.4mmol / L and 0.3mL Concentrated hydrochloric acid was added to 50mL of water, and after it was completely dissolved, 0.125mL of ascorbic acid with a concentration of 64mmol / L was added to it, and then 60uL of gold seed solution was added; after standing for 5-6h, the obtained brown liquid was centrifuged to obtain Au nanorods.

[0047] 2. Disperse the obtained Au nanorods in 50mL of cetyltrimethylammonium bromide solution with a concentration of 100mmol / L, add 100uL of sodium chloropalladate solution with a concentration of 25.4mmol / L, and then add 0.5mL of It is the ascorbic acid of 64mmol / L. The above solution was continuously stirred for 3 h, and after the reaction was completed, it was centrifuged to obtain Au@...

Embodiment 3

[0052] Prepare AuAg alloy nanospheres, the specific process is as follows:

[0053] 1. Heat 60mL of water to boiling, add 3mL of chloroauric acid solution with a concentration of 25.4mmol / L; after boiling again, add 3mL of sodium citrate solution with a mass fraction of 5wt%; after 10min, the reaction stops, wait until the solution temperature After cooling down to room temperature, 4.7 mL of PVP solution (molecular weight = 40000) with a mass concentration of 12.8 g / L was added, stirred for 12 h, and centrifuged to obtain Au nanospheres.

[0054] 2. Disperse the obtained Au nanospheres in 30 mL of PVP solution with a concentration of 80 mmol / L, add 1 mL of silver nitrate solution with a concentration of 10 mmol / L, and then add 0.5 mL of ascorbic acid with a concentration of 100 mmol / L. The above solution was placed in a water bath at 65°C and stirred continuously for 3h. After the reaction is completed, centrifuge to obtain Au@Ag nanospheres with core-shell structure.

[00...

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Abstract

The invention provides a method for preparing an alloy nanoparticle. The method utilizes good SPR properties and local heating ability of precious metal materials and heat insulation and original shape maintaining functions of SiO2 nano layers, so that different metal atoms in a multi-metal structure of a core-shell structure migrate to form the multi-metal alloy nanoparticle with constant morphology. The method uses sunlight or simulated sunlight as a light source without the need for other energy sources, the method is green, environmentally friendly and simple and quick to operate, completely alloyed nanoparticles of various morphologies can be prepared, and the prepared alloy nanoparticle has good dispersion performance, uniform size and excellent stability.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic metal nanometer materials, and in particular relates to a method for preparing alloy nanoparticle. Background technique [0002] Metal nanoparticles are an important part of nanomaterials, and have attracted extensive attention due to their unique optical, electronic, magnetic, catalytic and other properties. By changing the size, shape, composition and other factors of metal nanoparticles, the properties of this material can be effectively regulated. Especially when the composition of metal nanoparticles is changed, their various properties may change dramatically. Alloy nanoparticles, a new type of nano-metal particles constructed from two metal elements, are a new type of metal nanomaterials that play an important role in the fields of optics, biology, and catalysis. Alloy nanoparticles not only exhibit the excellent characteristics of the two metal elements, but also may exhibit new p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02B22F9/24
CPCB22F9/24B22F1/16
Inventor 姜晓静张桥曹暮寒刘其鹏陈敏
Owner SUZHOU UNIV
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