Method and apparatus for preparing mixed powder of nano gold and sodium chloride
A technology of mixing powder and sodium chloride, which is applied in the direction of mixing methods, chemical instruments and methods, food preparation, etc., can solve the problems of unfavorable dispersants for the human body and affect the use of nano-gold, and achieve low cost, environmental friendliness, and excellent preparation technology simple effect
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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] figure 2 It is the X-ray diffraction figure 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 all the other diffraction peaks are 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] image 3 It is the X-ray diffraction figure of the mixed powder of nanometer gold and sodium chloride, and the average particle size of gold is 90nm, and " * " sign among the figure marks 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] Figure 4 It is the X-ray diffraction figure of the mixed powder of nanometer gold and sodium chloride, and the average particle 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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