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Method and apparatus for preparing mixed powder of nano gold and sodium chloride

A technology of mixing powder and sodium chloride, applied in mixing methods, chemical instruments and methods, dissolution and other directions, can solve problems such as unfavorable dispersants for the human body, affecting the use of nano-gold, etc., and achieves low cost, environmental friendliness, and simple preparation process. Effect

Inactive Publication Date: 2007-03-07
上海华实纳米材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, gold nanoparticles are mostly prepared by the reduction method, and dispersants and surfactants that are harmful to the human body are often added in the preparation, which affects the use of gold nanoparticles.

Method used

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  • Method and apparatus for preparing mixed powder of nano gold and sodium chloride
  • Method and apparatus for preparing mixed powder of nano gold and sodium chloride
  • Method and apparatus for preparing mixed powder of nano gold and sodium chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) Auric acid chloride (HAuCl 4 4H 2 O) aqueous solution 25ml;

[0018] 2) Add 4.7g of sodium chloride into the aqueous chloroauric acid solution, after the sodium chloride is completely dissolved, dry it at 70°C, then grind and pulverize it;

[0019] 3) Put the powder obtained in step 2) into the ceramic boat of the heating device, pass in argon gas, the flow rate of argon gas is 1 liter / min, and after heating at 250°C for 1 hour, lower the furnace temperature while continuing to ventilate, Until room temperature, a mixed powder of nano gold and sodium chloride with a gold content of 2.5% is obtained.

[0020] Fig. 2 is the X-ray diffraction pattern of the mixed powder of nanometer gold and sodium chloride that makes, and the average particle size of gold is 56nm, and " * " sign has marked the diffraction peak of gold among the figure, and remaining diffraction peak is sodium chloride .

Embodiment 2

[0022] 1) Auric acid chloride (HAuCl 4 4H 2 O) aqueous solution 25ml;

[0023] 2) Add 4.7g of sodium chloride into the chloroauric acid aqueous solution, after the sodium chloride is completely dissolved, dry it at 80°C, then grind and pulverize it;

[0024] 3) Put the powder obtained in step 2) into the ceramic boat of the heating device, pass in argon gas, the flow rate of argon gas is 1 liter / min, and after heating at 300°C for 2 hours, lower the furnace temperature while continuing to ventilate, Until room temperature, a mixed powder of nano gold and sodium chloride with a gold content of 2.5% is obtained.

[0025] Fig. 3 is the X-ray diffraction pattern of nanometer gold and sodium chloride mixed powder, and the average particle size of gold is 90nm, and " * " sign among the figure has marked the diffraction peak of gold, and all the other diffraction peaks are sodium chloride.

Embodiment 3

[0027] 1) prepare 4.0% auric acid chloride (HAuCl) with deionized water concentration 4 4H 2 O) aqueous solution 25ml;

[0028] 2) Add 4.3g of sodium chloride into the chloroauric acid aqueous solution, after the sodium chloride is completely dissolved, dry it at 85°C, then grind and pulverize it;

[0029] 3) Put the powder obtained in step 2) into the ceramic boat of the heating device, pass in argon gas, the flow rate of argon gas is 5 liters / minute, and after heating at 350°C for 1 hour, lower the furnace temperature while continuing to ventilate, Until room temperature, a mixed powder of nano gold and sodium chloride with a gold content of 10.0% is obtained.

[0030] Fig. 4 is the X-ray diffractogram of nanometer gold and sodium chloride mixed powder, and the average grain size of gold is 95nm, and " * " sign among the figure marks the diffraction peak of gold, and all the other diffraction peaks are sodium chloride.

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Abstract

The invention discloses a method preparing nanometer aurum sodium chloride mixing powder, which has the following processes: 1) use the deionized water to prepare chlorauric acid hydraulic solution with 0.2-5.0% intensity; 2) add sodium chloride in the chlorauric acid hydraulic solution with their mass ratio of 1:1-1:100, dry the solution under 50-95 Deg. C after the dissolving of the sodium chloride, and then mill and crush it; 3) put the powder of the process 2) into the heating equipment, lead in argon gas or air, heat it in 250-450 Deg. C for 0.2-3 hours, and lower the house temperature during the airing. The invention has simple technique, low cost and no poisonous exhaustions. The products of the invention exclude separating agent and surface active agents and are safely edible.

Description

technical field [0001] The invention relates to a method and a device for preparing nano gold sodium chloride mixed powder. Background technique [0002] "Compendium of Materia Medica" edited by Li Shizhen said that gold has the effect of "suppressing the spirit, strengthening the bone marrow, benefiting the evil spirits of the five internal organs, and serving the gods". Nanogold has a wide range of application values ​​in many fields such as medical treatment, health care, biochemical industry, etc., so it has been highly valued. At present, gold nanoparticles are mostly prepared by the reduction method, and dispersants and surfactants that are harmful to the human body are often added in the preparation, which affects the use of gold nanoparticles. Contents of the invention [0003] The object of the present invention is to provide a method and device for preparing safe edible nano-gold sodium chloride mixed powder. [0004] The method for preparing nano gold sodium c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/30B01F3/18A23L33/16
Inventor 黄德欢李宗全吕春菊
Owner 上海华实纳米材料有限公司
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