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Abstract
Scientific report: 65p., 6 tables, 18 figures, 29 sources.
Object of study - colloidal solutions of silver nanoparticles.
Subject of research - the influence of synthesis conditions on the properties of the obtained particles.
Purpose - is to study the influence of methods of synthesis of silver nanoparticles (SNP) for their physicochemical properties, bioactive and biomedical use.
Methods - spectrophotometric analysis, transmission electron microscopy, IR-Fourier spectroscopy.
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In this paper it was shown that the size of SNP depends on a number of parameters - reducing the number of its chemical nature, pH.
It was established that the addition amount maskymalnoyi reducing the size of the particles decreases. The explanation of this process lies in the competition process nucleation and growth of embryos, and the speed of the first process dominates the second.
Demonstrated aggregation and, in some cases SNP dissolution of the interaction with human saliva. SNP Dissolution of up to 5 nm in saliva can explain most of their reactivity and bioactivity. Reducing the size of SNP leads to the predominance rinse the surface above volume corresponding active surface atoms of silver.
Creating of the nanocomposite magnetite / silver requires further research, particularly in terms of stabilization systems and selection of optimal synthesis parameters to regulate the size of the clusters of silver.
Keywords: nanoparticles, nanosilver, colloidal solution, magnetite, clusters, nanocomposite.
