Pueraria lobata nano-silver composite hydrosol, preparation method and application thereof

A preparation method of a Pueraria lobata nano-silver composite hydrosol, comprising the following steps:

• dispersing Pueraria lobata powder in water, heating the Pueraria lobata powder and the water to perform gelatinization, thereby obtaining a paste;
• adjusting a potential of hydrogen (pH) value of the paste, and then sequentially adding an alkyl polyglucoside solution, a silver nitrate solution, and a sodium chloride solution into the paste to obtain a mixture, and performing a reaction on the mixture by microwave heating to obtain the Pueraria lobata nano-silver composite hydrosol;
• wherein the pH value of the paste is adjusted to 13;
• wherein a ratio of addition amounts of the Pueraria lobata powder:
• the water:
• the alkyl polyglucoside solution:
• the silver nitrate solution:
• the sodium chloride solution is in a range of 10 grams (g):
• 450-550 milliliters (mL):
• 20 mL:
• 40-50 mL:
• 10−15 ml;
• wherein a concentration of the silver nitrate solution is 40 grams per liter (g/L);
• wherein a concentration of the sodium chloride solution is 1 g/L;
• wherein the alkyl polyglucoside solution is obtained by diluting 1 mL of alkyl polyglucoside with a branched chain of 10 carbons in 50 ml of water;
• wherein the performing a reaction on the mixture by microwave heating comprises:
• performing the reaction on the mixture for 4 minutes (min) by the microwave heating, taking out the mixture and stirring the mixture for 10 seconds(s), then continuing the microwave heating for 1.1 min, taking out the mixture, and standing the mixture for 1-2 h accompanied with intermittent stirring;
• and
• wherein a power of the microwave heating in the performing a reaction on the mixture by microwave heating is 800 watts (W), and a temperature for the microwave heating is 95 degrees Celsius (° C.).