| Autor: |
Du, Bui Duy, Phu, Dang Van, Duy, Nguyen Ngoc, Lan, Nguyen Thi Kim, Lang, Vo Thi Kim, Thanh, Ngo Vo Ke, Phong, Nguyen Thi Phuong, Hien, Nguyen Quoc |
| Předmět: |
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| Zdroj: |
Journal of Experimental Nanoscience; Sep2008, Vol. 3 Issue 3, p207-213, 7p, 1 Diagram, 1 Chart, 3 Graphs |
| Abstrakt: |
Colloidal silver nanoparticles were prepared by γ-irradiating Ag+ in aqueous solution in the presence of 2% polyvinyl pyrrolidone (PVP) as stabilising agent and ethyl alcohol as free radical (OH•) scavenger. The saturated conversion dose of Ag+ into Ag was determined by UV-Vis spectroscopy and the silver nanoparticles size was characterised by transmission electron microscopy. The influence of Ag+ concentration (1-50 mM) on the saturated conversion dose and average diameter of silver nanoparticles was investigated. Results showed that the saturated conversion dose was from 8 to 48 kGy and the silver particles size was in the range of 6-21 nm for Ag+ concentration from 1 to 50 mM. The effect of PVP molecular weight on silver particles size was studied as well. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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