Method for preparing Nano silver sol
A nano-silver sol and nano-silver technology are applied in the field of preparation of nano-silver sol, which can solve problems such as residual chemical toxic substances, and achieve the effects of good antibacterial and antiviral activity, less dosage and uniform distribution.
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Embodiment 1
[0030] A formulation of an inverse microemulsion is as follows:
[0031] components
component name
n-heptane
9
alkali
0.25
water box
Silver nitrate aqueous solution or sodium borohydride aqueous solution
1
biosurfactant
3
co-surfactant
6
[0032] The preparation method of nano silver is as follows:
[0033] Dissolve silver nitrate and sodium borohydride in deionized water respectively to prepare silver nitrate aqueous solution and 0.1mol / L sodium borohydride aqueous solution with concentrations of 0.1mol / L, respectively. Mix the mixture of biosurfactant and cosurfactant with silver nitrate aqueous solution and sodium borohydride aqueous solution at a mass ratio of 9:1, and then add oil equivalent in quality to the mixture of biosurfactant and cosurfactant phase, respectively prepared mi...
Embodiment 2
[0035] A formulation of an inverse microemulsion is as follows:
[0036] components
component name
Isooctane
4
alkali
0.09
water box
Silver nitrate aqueous solution or hydration trap aqueous solution
1
biosurfactant
Trehalolipid
1.33
co-surfactant
n-pentanol
2.66
[0037] The preparation method of nano silver is as follows:
[0038] Dissolve silver nitrate and hydration trap in deionized water respectively to prepare silver nitrate aqueous solution and 0.1 mol / L aqueous hydration trap solution with concentrations of 0.1 mol / L respectively. The mixture of biosurfactant and cosurfactant is mixed with silver nitrate aqueous solution and hydration trap aqueous solution at a mass ratio of 8:2, and then an oil phase equivalent in quality to the mixture of biosurfactant and cosurfactant is added , to prepare microemulsions containing silv...
Embodiment 3
[0040] A formulation of an inverse microemulsion is as follows:
[0041] components
component name
oil phase
7
alkali
0.20
water box
Silver nitrate aqueous solution or trisodium citrate aqueous solution
3
biosurfactant
Sophorolipids
2.33
[0042] co-surfactant
n-propanol
4.66
[0043] The preparation method of nano silver is as follows:
[0044] Dissolve silver nitrate and trisodium citrate in deionized water respectively to prepare 0.1 mol / L silver nitrate aqueous solution and 0.1 mol / L trisodium citrate aqueous solution. The mixture of biosurfactant and co-surfactant is mixed with silver nitrate aqueous solution and trisodium citrate aqueous solution with a mass ratio of 7: 3, and then add the equivalent mass of biosurfactant and co-surfactant mixture. In the oil phase, a microemulsion containing silver nitrate and a micr...
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