Synthesis of Ag and Ag/SiO2 sols by solvothermal method and their bactericidal activity

Ag and Ag/SiO 2 sols containing nanocrystalline silver particles can be advantageously prepared by solvothermal methods using an autoclave with conventional thermal or microwave heating. In this process, the reduction of silver salts can be realized with alcohols like ethanol in the presence of poly...

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Bibliographic Details
Published in:Journal of sol-gel science and technology Vol. 51; no. 2; pp. 204 - 214
Main Authors: Mahltig, B., Gutmann, E., Reibold, M., Meyer, D. C., Böttcher, H.
Format: Journal Article
Language:English
Published: Boston Springer US 01-08-2009
Springer
Springer Nature B.V
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Summary:Ag and Ag/SiO 2 sols containing nanocrystalline silver particles can be advantageously prepared by solvothermal methods using an autoclave with conventional thermal or microwave heating. In this process, the reduction of silver salts can be realized with alcohols like ethanol in the presence of polyvinylpyrrolidone at temperatures of more than 120 °C. Furthermore a combination of silver salt reduction with hydrolysis of alkoxysilanes during the solvothermal process can yield Ag/SiO 2 composite sols. Particle size and crystallinity of as-prepared particles are analyzed by means of X-ray diffraction and high-resolution transmission electron microscopy. Nanosized silver particles gained by this process exhibit antimicrobial properties that are investigated in detail after application on textile fabrics.
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-009-1972-8