Unlock instant, AI-driven research and patent intelligence for your innovation.

2-Aminoethanethiol-regulated method for synthesizing nano-gold composites of different sizes

A technology of aminoethanethiol and composite materials, which is applied in the field of synthesis of nano-gold composite materials of different sizes, to achieve wide application prospects, overcome the effect of easy agglomeration, and enhance fluorescence

Inactive Publication Date: 2017-10-20
SHAANXI NORMAL UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the analysis of relevant research results at home and abroad, it is found that there are few reports on the use of mercapto compounds to synthesize gold nanoparticles with larger particle sizes. , synthesize 15nm gold nanoparticles as seeds, and synthesize gold nanoparticles with a particle size of 30-150nm by adjusting the ratio of seed solution to mercaptosuccinic acid. Step by step to realize the regulation of the particle size of gold nanoparticles

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
  • 2-Aminoethanethiol-regulated method for synthesizing nano-gold composites of different sizes
  • 2-Aminoethanethiol-regulated method for synthesizing nano-gold composites of different sizes
  • 2-Aminoethanethiol-regulated method for synthesizing nano-gold composites of different sizes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add 0.021g of poly(styrene) / poly(acrylic acid) core-shell composite microgel into 35mL of double distilled water, disperse uniformly by ultrasonic, and prepare a 0.6g / L microgel dispersion; add 20mL 0.85mmol / L tetrachloroalloy acid aqueous solution and 5mL 0.032mol / L 2-aminoethanethiol aqueous solution are mixed uniformly, the resulting mixture is added to the microgel dispersion, stirred and swelled for 7.5 hours at room temperature under nitrogen protection, and 10mL 8.0 is added The sodium citrate solution of mmol / L was stirred for 30 minutes, and then 10mL of 0.028mol / L sodium borohydride aqueous solution was added dropwise. After stirring for 2 hours, it was allowed to stand in the dark for 5 days. The reaction product was washed by absolute ethanol centrifugation and freeze-dried. The nano-gold composite material is obtained.

[0031] The prepared nano-gold composite materials were characterized by JEM-21009 transmission electron microscope and U-3900 / 3900H (Japan H...

Embodiment 2

[0033] In Example 1, the 0.032mol / L 2-aminoethanethiol aqueous solution was replaced with an equal volume of 0.065mol / L 2-aminoethanethiol aqueous solution. The other steps were the same as in Example 1, and the particle size was about 20nm. Nano gold composite materials (see image 3 ), and by Figure 4 It can be seen from the ultraviolet-visible absorption spectrum of the nano-gold composite material that its maximum absorption peak appears at 527nm.

Embodiment 3

[0035] In Example 1, the 0.032mol / L 2-aminoethanethiol aqueous solution was replaced with an equal volume of 0.090mol / L 2-aminoethanethiol aqueous solution. The other steps were the same as in Example 1, and a particle size of about 30nm was obtained. Nano gold composite materials (see Figure 5 ), and by Image 6 It can be seen from the ultraviolet-visible absorption spectrum of the nano-gold composite material that its maximum absorption peak appears at 532nm.

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for synthesizing nano-gold composite materials with different sizes controlled by 2-aminoethanethiol. In the method, tetrachloroalloy acid is modified by 2-aminoethanethiol, and then poly(styrene) / poly(acrylic acid) The core-shell microgel is used as the carrier, and the modified tetrachloroalloy acid solution is fully swelled into the three-dimensional network structure of the microgel, and then sodium borohydride is used as the reducing agent, and sodium citrate is used as the auxiliary reducing agent and stabilizer. Nano-gold composites with different sizes were synthesized. The invention is simple to operate, and utilizes the interaction force between the carboxyl group in the microgel and the amino group in 2-aminoethanethiol and the confinement effect of the network chain of the microgel shell to make the nano-gold grow on the microgel shell , while effectively controlling the stability of nano-gold, and utilizing the modification of sulfhydryl and amino groups in 2-aminoethanethiol to nano-gold particles, by increasing the amount of 2-aminoethanethiol, small-sized gold nanoparticles can be assembled The larger-sized nano-gold composite material is generated, and the controllable synthesis of different-sized gold nanoparticles is realized.

Description

Technical field [0001] The invention belongs to the technical field of synthesis of nano-gold composite materials of different sizes, and specifically relates to a method for regulating and synthesizing nano-gold composite materials of different sizes by using 2-aminoethanethiol. Background technique [0002] The synthesis of nanoparticles of different sizes and morphologies has always received extensive attention. Gold nanoparticles have been widely studied due to the physical and chemical properties that their size and morphology can rely on, making them have potential applications in the fields of optoelectronics, catalysis, electronics, and biomedicine. [0003] Under normal circumstances, sodium citrate or functional molecules (such as surfactants and polymers) can be used to control the particle size and morphology of gold nanoparticles. For example, the sodium citrate slow reduction tetrachloride acid method can synthesize gold nanoparticles with a particle size of 5-30nm in...

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): B22F9/24B22F1/02
CPCB22F9/24B22F1/16
Inventor 张颖滕小波姜春阁
Owner SHAANXI NORMAL UNIV