Synthesis method for spherical nano-silver particles and spherical nano-silver particles
A technology of spherical nano-silver and synthesis method, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, and can solve the problems of non-compliance with environmental protection requirements and pollution of synthetic nano-silver
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Embodiment 1
[0037] Embodiment 1 of the present invention provides a kind of synthetic method of spherical nano-silver particles, such as figure 1 As shown, the method includes:
[0038] Step S101, preparing a lemongrass extract, uniformly mixing the lemongrass extract with water to obtain a lemongrass extract, and adjusting the pH value of the lemongrass extract to alkaline;
[0039] Step S102, preparing a soluble silver salt solution and a starch solution, uniformly mixing the soluble silver salt solution and the starch solution to obtain a silver salt mixed solution;
[0040] Step S103, uniformly mixing the alkaline lemongrass extract and the silver salt mixed solution and reacting at a set temperature for a set period of time to obtain a solution containing spherical nano-silver particles.
[0041] In the embodiments of the present invention, when synthesizing nano-silver particles, lemon grass, starch, and soluble silver salt solution are used as reactants. These reactants are enviro...
Embodiment 2
[0062] A synthetic method for spherical nano-silver particles, comprising the following steps:
[0063] (1) Pulverize the dried lemongrass, weigh 3g of lemongrass powder, add 100g of water, go through an oil bath at 100°C until boiling and keep boiling for 10 minutes, vacuum filter, and concentrate the resulting solution under reduced pressure to obtain brown viscous Thick thing, dry brown viscous thing, obtain powdered lemongrass extract, put lemongrass extract into refrigerator at 4 ℃ and save for later use.
[0064] (2) Dissolve 0.3 g of the lemongrass extract in water, stir and mix well to obtain the lemongrass extract. The pH value of the lemongrass extract was adjusted to 8.0 with NaOH solution.
[0065] (3) Weigh 0.136g of silver nitrate and dissolve it in deionized water, so that the molar mass ratio of the lemongrass extract in the above lemongrass extract to the silver ion molar mass in the silver nitrate solution is 0.3g / 0.8mmol.
[0066] (4) Weigh a certain quali...
Embodiment 3
[0070] A synthetic method for spherical nano-silver particles, comprising the following steps:
[0071] (1) Pulverize the dried lemongrass, weigh 3g of lemongrass powder, add 100g of water, go through an oil bath at 100°C until boiling and keep boiling for 10 minutes, vacuum filter, and concentrate the resulting solution under reduced pressure to obtain brown viscous Thick thing, dry brown viscous thing, obtain powdered lemongrass extract, put lemongrass extract into refrigerator at 4 ℃ and save for later use.
[0072] (2) Dissolve 0.3 g of the lemongrass extract in water, stir and mix well to obtain the lemongrass extract. Utilize NaHCO3 solution to adjust the pH value of lemongrass extract to 8.0.
[0073] (3) Weigh 0.170g of silver nitrate and dissolve it in deionized water, so that the molar mass ratio of the lemongrass extract in the above lemongrass extract to the silver ion molar mass in the silver nitrate solution is 0.3g / 1.0mmol.
[0074] (4) Weigh a certain quality...
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Abstract
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