SILVER NANOPARTICLES FORMATION IN COLLOIDAL SYSTEM AND POLYMER MATRIX
Abstract
Using UV and visible spectroscopy, atomic force microscopy, and the method of dynamic light scattering, the growth dynamics and the size distribution of Ag particles (NPs) in the polyvinyl alcohol (PVA) composition, PVA film, and aqueous sol were studied. The hypsohromic shift of the surface plasmon absorption band of Ag NPs, when changing from the PVA composition to the film, has been measured. The magnitude of the shift is 55 nm. The dynamics of Ag particles formation and the particle size have been shown to be highly dependent on the UV irradiation, ultrasonic action, and PVA concentration. Thus, it has been established that UV irradiation accelerates Ag NPs formation in the presence of reducing agents and destroys the formed nanoparticles in case of the lack of the reductant. Partial Ag NPs destruction occurs under the influence of ultrasound, while, after UV irradiation, the ultrasound action leads to the reduction of Ag ions on the clusters.
About the Authors
A. L. Potapov
Institute of Chemistry of New Materials, National Academy of Sciences of Belarus
Russian Federation
Russian Federation
V. E. Agabekov
Institute of Chemistry of New Materials, National Academy of Sciences of Belarus
Russian Federation
Russian Federation
V. N. Belyi
B. I. Stepanov Institute of Physics of the National Academy of Sciences of Belarus
Russian Federation
Russian Federation
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Review
For citations:
Potapov A.L., Agabekov V.E., Belyi V.N. SILVER NANOPARTICLES FORMATION IN COLLOIDAL SYSTEM AND POLYMER MATRIX. Zhurnal Prikladnoii Spektroskopii. 2018;85(2):271-279. (In Russ.)
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