Method for preparing gold nano-flowers

A nanoflower, gold preparation technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of narrow production material range, expensive reaction conditions, uncontrollable morphology, etc. The effect of analysis and design, simple preparation process, and regular morphology

Active Publication Date: 2017-03-08
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these traditional preparation methods have shortcomings such as narrow range of materials that can be produced, special reaction conditions that require expensive equipment (such as: high temperature, high pressure), uncontrollable morphology, and easy agglomeration and deposition. Practical application is restricted

Method used

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  • Method for preparing gold nano-flowers
  • Method for preparing gold nano-flowers
  • Method for preparing gold nano-flowers

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Take 0.57 mg of vapreotide acetate (Wuhan Dongkangyuan Technology Co., Ltd.), and dissolve it in 1 mL of hydrochloric acid solution with pH 2.0 to prepare a vapreotide acetate solution. Place the vapreotide acetate solution in a 60°C metal bath for 40 minutes, Then it was ultrasonically treated at 80 Hz for 30 s; 400 μL of vapreotide acetate solution after the metal bath was mixed with 400 μL of 5.0 mM gold trichloride aqueous solution (Tianjin Chemical Reagent Factory) and then placed in a constant temperature oscillator in a water bath, and the control speed was 110 rpm , and incubated at 23°C for 20 hours; finally, 50 μL of 8.0 mM sodium borohydride (produced by Beijing Zhongsheng Huateng Technology Co., Ltd.) was added dropwise for reduction, the dropping speed was 2 drops / min, 25 μL / drop, and the temperature was 23°C , and reacted for 20 minutes to make it slowly change from light yellow to blue purple, and obtain vapreotide acetate-gold nanoflowers.

[0025] The m...

Embodiment 2

[0027] Take 0.68 mg of vapreotide acetate (Wuhan Dongkangyuan Technology Co., Ltd.), and dissolve it in 1 mL of hydrochloric acid solution with pH 2.5 to prepare a vapreotide acetate solution. Place the vapreotide acetate solution in a metal bath at 62°C for 42 minutes. Then it was ultrasonically treated at 80 Hz for 40 s; 400 μL of vapreotide acetate solution after the metal bath was mixed with 400 μL of 7.0 mM gold trichloride aqueous solution (Tianjin Chemical Reagent Factory) and then placed in a constant temperature oscillator in a water bath, and the control speed was 115 rpm , and incubated at 23°C for 21 hours; finally, 100 μL of 10.0 mM sodium borohydride (produced by Beijing Zhongsheng Huateng Technology Co., Ltd.) was added dropwise for reduction, the dropping speed was 2 drops / min, 25 μL / drop, and the temperature was 23°C , and reacted for 22 minutes to make it slowly change from light yellow to blue-purple, that is, to obtain vapreotide acetate-gold nanoflowers.

...

Embodiment 3

[0030] Take 0.79 mg of vapreotide acetate (Wuhan Dongkangyuan Technology Co., Ltd.), and dissolve it in 1 mL of hydrochloric acid solution with a pH of 3.0 to prepare a vapreotide acetate solution. Place the vapreotide acetate solution in a 64°C metal bath for 44 minutes, Then it was ultrasonically treated at 80 Hz for 50 s; 400 μL of vapreotide acetate solution after the metal bath was mixed with 400 μL of 9.0 mM gold trichloride aqueous solution (Tianjin Chemical Reagent Factory) and placed in a constant temperature oscillator in a water bath, and the control speed was 120 rpm. , and incubated at 23°C for 22 hours; finally, 150 μL of 12.0 mM sodium borohydride (produced by Beijing Zhongsheng Huateng Technology Co., Ltd.) was added dropwise for reduction, the dropping speed was 2 drops / min, 25 μL / drop, and the temperature was 23°C , and reacted for 24 minutes to slowly change from light yellow to blue-purple, that is, to obtain vapreotide acetate-gold nanoflowers.

[0031] Th...

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Abstract

The invention discloses a method for preparing gold nano-flowers. The method mainly comprises steps as follows: a vapreotide acetate solution with the concentration being 0.5-0.7 mM is prepared from a hydrochloric acid solution, is placed in a metal bath at 60-64 DEG C for heat treatment for 40-44 min and is subjected to 80-Hz ultrasonic treatment for 30-50 s; then a gold chloride aqueous solution is added with the molar ratio of vapreotide acetate to the gold chloride aqueous solution being 1:(10-13), and the mixture is evenly mixed and is placed into a water-bath thermostatic oscillator for incubation at 110-120 rpm at 23 DEG C for 20-22 h; and sodium borohydride is added to the incubated solution with the molar ratio of sodium borohydride to the gold chloride aqueous solution being 1:(2-5) for a reaction at the reaction temperature of 23 DEG C for 20-24 min until the solution is slowly changed from faint yellow to bluish violet, and the gold nano-flowers with the particle size ranging from 120 nm to 150 nm are prepared. With the method, the preparation technology is simple, reaction conditions are mild, and the prepared gold nano-flowers are uniform in particle size, relatively high in metal loading capacity, regular in shape and good in dispersity.

Description

technical field [0001] The invention belongs to the technical field of materials, in particular to a method for preparing metal nanomaterials. Background technique [0002] Noble metal nanoparticles have special physical properties, and they are widely used in the fields of catalysis, biomarkers, optoelectronics, information storage, and surface-enhanced Raman scattering. The research on metal nanoparticles, especially their shape-controllable preparation and their corresponding properties and applications has always been a frontier hotspot in materials science and related fields. In recent years, great progress has been made in the research of gold nanomaterials. Gold nanoparticles with various morphologies have been prepared and widely used in the fields of nano-device construction, biomarkers, medical detection, and information storage. [0003] In the study of optical properties of nanomaterials, the excellent optical properties of metal nanoparticles are derived from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0553B22F1/07B22F1/054
Inventor 高大威李彦集尹甜边可新刘欢牛康
Owner YANSHAN UNIV
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