Spectral-luminescence properties of water dispersions of CdS and Ag nanoparticles stabilized with Na2SiO3
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-vi...
| Published in: | Key engineering materials Vol. 683. P. 325-330 |
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| Main Author: | |
| Other Authors: | , |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000553494 Перейти в каталог НБ ТГУ |
| Summary: | 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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| ISSN: | 1013-9826 |