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Preparing method for thorniness gold nanoparticles

A gold nanoparticle and gold source technology, applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve the problems of low yield, irregular height of prickly gold nanoparticles, few thorns of spherical particles, etc. The effect of narrow size distribution, simple synthesis conditions, and obvious absorption characteristics

Active Publication Date: 2017-11-17
鹤壁理大特种玻璃制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a preparation method of prickly gold nanoparticles, which solves the problem that the seed crystal method is mainly gold nanostars, but its yield is very low and there are few thorns on the spherical particles; and the homogeneous nucleation method is a method that does not need to add The one-step preparation method of gold seeds usually uses high concentration of surfactant to control the growth, which causes problems such as high irregularity of the prepared spiny gold nanoparticles

Method used

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  • Preparing method for thorniness gold nanoparticles

Examples

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Effect test

Embodiment 1

[0028] A preparation method of prickly gold nanoparticles, comprising the steps of:

[0029] (1) Add 5 mL of Triton X-100 with a concentration of 130 mmol / L into a 20 mL glass bottle washed with aqua regia;

[0030] (2) Add 125 μL of silver nitrate solution with a concentration of 4 mmol / L into the glass bottle and shake clockwise for 10 seconds;

[0031] (3) Add 25 μL of chloroauric acid solution with a concentration of 100 mmol / L into the glass bottle and shake clockwise for 10 seconds;

[0032] (4) Add 85 μL of ascorbic acid solution with a concentration of 80 mmol / L into the glass bottle and shake clockwise for 3 seconds;

[0033] (5) The solution was left to stand for 1.5 hours at a temperature of 20° C. to obtain a spiny gold nanoparticle dispersion;

[0034] (6) Then add the cetyltrimethylammonium bromide solution equal to the volume of 100mmol / L of the prickly gold nanoparticle dispersion, stir for 2 hours, centrifuge and be dissolved in deionized water again, the ce...

Embodiment 2

[0038] A preparation method of prickly gold nanoparticles, comprising the steps of:

[0039] (1) Add 5 mL of Triton X-100 with a concentration of 130 mmol / L into a 20 mL glass bottle washed with aqua regia;

[0040] (2) Add 100 μL of silver nitrate solution with a concentration of 4 mmol / L into the glass bottle and shake clockwise for 10 seconds;

[0041] (3) Add 25 μL of chloroauric acid solution with a concentration of 100 mmol / L into the glass bottle and shake clockwise for 10 seconds;

[0042](4) Add 50 μL of ascorbic acid solution with a concentration of 80 mmol / L into the glass bottle and shake clockwise for 5 seconds;

[0043] (5) The solution was left to stand for 1 hour at a temperature of 30° C. to obtain a spiny gold nanoparticle dispersion;

[0044] (6) Then add the cetyltrimethylammonium bromide solution equal to the volume of the prickly gold nanoparticle dispersion of 10mmol / L, stir for 1.5 hours, centrifuge and be dissolved in deionized water again, the centr...

Embodiment 3

[0047] A preparation method of prickly gold nanoparticles, comprising the steps of:

[0048] (1) Add 5 mL of Triton X-100 with a concentration of 130 mmol / L into a 20 mL glass bottle washed with aqua regia;

[0049] (2) Add 300 μL of silver nitrate solution with a concentration of 4 mmol / L into the glass bottle and shake clockwise for 15 seconds;

[0050] (3) Add 25 μL of chloroauric acid solution with a concentration of 100 mmol / L into the glass bottle and shake clockwise for 15 seconds;

[0051] (4) Add 300 μL of ascorbic acid solution with a concentration of 80 mmol / L into the glass bottle and shake clockwise for 3 seconds;

[0052] (5) The solution was left to stand for 2.5 hours at a temperature of 15° C. to obtain a spiny gold nanoparticle dispersion;

[0053] (6) Then add the hexadecyltrimethylammonium bromide solution of 200mmol / L equal volume with spiny gold nanoparticle dispersion liquid, after stirring for 2.5 hours, centrifuge and be dissolved in deionized water ...

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Abstract

The invention relates to a preparing method for thorniness gold nanoparticles. The preparing method includes the following steps that firstly, a soluble silver source, a soluble gold source and a weak reducing agent are sequentially added into a nonionic surface active agent solution, oscillating and standing are conducted, and thorniness gold nanoparticle dispersion liquid is obtained; and secondly, the dispersion liquid and a hexadecyl trimethyl ammonium bromide solution are mixed with the equivalent volume, the mixture is stirred for 1.5 h to 2.5 h and then is subjected to centrifugal separation and dispersed in deionized water again, and a thorniness gold nanoparticle solution is obtained. Compared with the prior art, a nonionic surface active agent triton X-100 is used for controlling growing and forming, and the thorniness gold nanoparticles are grown through a one-step method without seeds, the yield approaches 100%, and synthesis conditions are simple. Particle size distribution of manufactured thorniness gold nanoparticle pieces is narrow, obvious absorption characteristics can be shown in a near-infrared light visible region, and the preparing method can be applied to the biomedicine forefront fields such as preparing of photo-thermal therapy medicines, optical biological markers and sensors and the like.

Description

technical field [0001] The invention relates to the field of novel nanometer materials, in particular to a method for preparing prickly gold nanoparticles. Background technique [0002] Nanomaterials are a class of ultra-small materials whose particle size is reduced to nanometers and have unique properties different from bulk materials. Typically, this nanometer scale is defined as 0.1-100nm. Nanomaterials in a broad sense include at least one material in the nanoscale range and materials composed of nanoparticles in three-dimensional space. When the size of the particle drops to the nanometer level, it will show some special properties such as quantum size effect, small size effect, surface effect, macroscopic quantum tunneling effect, dielectric confinement effect and Coulomb blocking and quantum tunneling effect, nanomaterials It is subtly changing the world. Gold nanomaterials are one of the most stable nanoparticles among metal nanomaterials, with unique physical an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB82Y40/00B22F9/24B22F1/0553B22F1/0545
Inventor 宋驁天汪远昊王世锋乔宝伟曹雪峰
Owner 鹤壁理大特种玻璃制造有限公司
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