Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for preparing gold-copper alloy nanoparticles

A nanoparticle, gold-copper alloy technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve mild reaction conditions

Active Publication Date: 2021-05-11
SHANGHAI INST OF TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few reports on the synthesis methods of small particle size (below 10nm) gold-copper alloy particles.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing gold-copper alloy nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Preparation and characterization of gold-copper alloy nanoparticles (~2 nm):

[0025] (1) Preparation of copper precursor solution and gold precursor solution

[0026] The cupric chloride that buys is mixed with deionized water 40 milliliters of the copper precursor solution of 0.06 mol / liter, and adds appropriate tetrachloroauric acid, obtains cupric chloride: tetrachloroauric acid mol ratio is the mixed solution of 1:1, Stir well. In addition, sodium borohydride was prepared into a 2.4 mol / liter reducing agent solution with deionized water.

[0027] (2) Phase transfer process

[0028] Add 80 ml of toluene to the above mixed solution, and add a sufficient amount of 0.7 g of tetraoctyl ammonium bromide to form an organic phase, stir for 40 minutes, transfer the copper particles and chloroauric acid to the organic phase, and form a deep red orange . Separate again through a separatory funnel to remove the aqueous layer. The remaining organic mixed solution was trans...

Embodiment 2

[0034] Preparation and characterization of gold-copper alloy nanoparticles (~5 nm):

[0035] (1) Preparation of copper precursor solution and gold precursor solution

[0036] The cupric chloride that buys is mixed with deionized water 52 milliliters of the copper precursor solution of 0.04 mol / liter, and adds appropriate tetrachloroauric acid, obtains cupric chloride: tetrachloroauric acid mol ratio is the mixed solution of 1:1, Stir well. In addition, sodium borohydride was prepared with deionized water to form a 2.0 mol / liter reducing agent solution.

[0037] (2) Phase transfer process

[0038] Add 80 ml of toluene to the above mixed solution, and add a sufficient amount of 0.7 g of tetraoctyl ammonium bromide to form an organic phase, stir for 40 minutes, transfer the copper particles and chloroauric acid to the organic phase, and form a deep red orange . Separate again through a separatory funnel to remove the aqueous layer. The remaining organic mixed solution was tr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing gold-copper alloy nanoparticles. The specific steps are as follows: (1) prepare a mixed solution of a copper precursor and a gold precursor; in the mixed solution, the concentrations of the copper precursor and the gold precursor are the same; (2) add toluene and tetraoctyl bromide to the above mixed solution Ammonium chloride, fully stirred, the copper precursor and the gold precursor are transferred to the organic phase; then separated by a separatory funnel, the water layer is removed to obtain an organic mixed solution; (3) under an inert atmosphere, after stirring the organic mixed solution, dropwise Add the reducing agent aqueous solution, after the addition, continue to stir at room temperature, and finally separate the liquid, concentrate the obtained nano-gold-copper alloy suspension to obtain gold-copper alloy nanoparticles. The invention selects the organic phase to provide a protective environment for the nanoparticles, avoids the instability and agglomeration of the synthesized nanoparticles in the water phase, and adopts mild reaction conditions, which provides a strategy for the preparation of the bimetallic nano-alloy catalyst.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing gold-copper alloy nanoparticles. Background technique [0002] The ability to control the synthesis of parameters such as composition and morphology of nanomaterials is an important prerequisite for promoting the development and application expansion of nanotechnology. [0003] Nanocatalysts are different from traditional catalysts in that they further expand the specific surface area and possess unique surface and structural properties, which is also the main driving force for nanocatalysis research. There are many reports on the design and synthesis of metal nanocatalysts, and alloy nanocatalysts are in a more prominent position in catalytic research. Au-Cu nanoalloys have aroused great interest due to their wide potential applications as bimetallic alloy catalysts with high electrical conductivity and excellent catalytic performance. F...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/054B22F1/07
Inventor 成汉文朱丽莹汪翰清魏铭仪王荆刘昌林罗谨
Owner SHANGHAI INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com