Формування, фізико-хімічні та антибактеріальні властивості стабілізованих наноструктур срібла на поверхні дисперсного кремнезему
Stable Ag nanoparticles (NPs) on the surface of high-dispersed silica have been produced by the adsorption of silver clusters from the colloid solutions which were synthesized in presence  of polyvinilpyrrolidone and/or sodium dodecyl sulfate as stabilizers. Silver ions reduction was pe...
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| Date: | 2009 |
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| Main Authors: | , , , , , |
| Format: | Article |
| Language: | Russian |
| Published: |
Chuiko Institute of Surface Chemistry National Academy of Sciences of Ukraine
2009
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| Online Access: | https://surfacezbir.com.ua/index.php/surface/article/view/346 |
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| Journal Title: | Surface |
| Download file: |  |
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Surface| Summary: | Stable Ag nanoparticles (NPs) on the surface of high-dispersed silica have been produced by the adsorption of silver clusters from the colloid solutions which were synthesized in presence  of polyvinilpyrrolidone and/or sodium dodecyl sulfate as stabilizers. Silver ions reduction was performed with NaBH4 in solution contained with PVP and/or SDS. The band of SPR position inherent to Ag NPs  and intensity of optical spectra are stable. The average diameter of Ag NPs is 8- 12 nm. In accordance with DTA-DTG measurements, organic components are removed from the obtained systems at 2200-2700С. Obtained Ag NPs in colloids and Ag/SiO2 composites have high antimicrobial activity against the series of the microorganisms - Escherichia coli, Staphylococcus aurous, Candida albicans. |
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