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Spectral-luminescence properties of water dispersions of CdS and Ag nanoparticles stabilized with Na2SiO3 A. A. Biryukov, E. Y. Gotovtseva, V. A. Svetlichnyi

By: Biryukov, Alexander AContributor(s): Gotovtseva, Ekaterina Yu | Svetlichnyi, Valerii AMaterial type: ArticleArticleSubject(s): сульфид кадмия | серебро | наночастицы | спектрально-люминесцентные свойства | дисперсияGenre/Form: статьи в журналах Online resources: Click here to access online In: Key engineering materials Vol. 683. P. 325-330Abstract: It was shown, that using of sodium metasilicate (Na2SiO3) as stabilizing agent for CdS quantum dots or Ag nanoparticles in water leads to the formation of stable colloids of CdS/SiO32- and Ag/SiO32- particles. These colloids are active in the visible range of the spectrum. According to TEM and UV-visible spectroscopy data, an average size of the particles in colloids was ∼ 5 nm for CdS and 2-10 nm for Ag. Ag/SiO32- water colloids showed an absorption band with a maximum at 380-410 nm. This band belonged to surface plasmon resonance. CdS/SiO32- water dispersions were characterized by luminescence at the region of 500-800 nm. The luminescence intensity increased after addition of Ag+ into the colloids of CdS/SiO32-.
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It was shown, that using of sodium metasilicate (Na2SiO3) as stabilizing agent for CdS quantum dots or Ag nanoparticles in water leads to the formation of stable colloids of CdS/SiO32- and Ag/SiO32- particles. These colloids are active in the visible range of the spectrum. According to TEM and UV-visible spectroscopy data, an average size of the particles in colloids was ∼ 5 nm for CdS and 2-10 nm for Ag. Ag/SiO32- water colloids showed an absorption band with a maximum at 380-410 nm. This band belonged to surface plasmon resonance. CdS/SiO32- water dispersions were characterized by luminescence at the region of 500-800 nm. The luminescence intensity increased after addition of Ag+ into the colloids of CdS/SiO32-.

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