Journal
RARE METAL MATERIALS AND ENGINEERING
Volume 42, Issue 2, Pages 249-253Publisher
NORTHWEST INST NONFERROUS METAL RESEARCH
DOI: 10.1016/S1875-5372(13)60040-5
Keywords
nano-silver sols; green synthesis; electrolysis
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The highly pure nano-silver sols were prepared by an electrolysis method using two highly pure silver flakes as electrodes and deionized water as electrolytic solution, and PVP served as stabilizer. The effects of PVP content, electrolytic time and current density on the colloidal silver nanoparticles were researched. The results indicate that as-synthesized particles were spherical about 1 similar to 3 nm in size, and monodispersed and its concentration reached to 130 mu g/g under the condition of 5.0 wt% PVP with current density about 1 similar to 2 mA/cm(2) for 150 min. Moreover, the nano-silver sol had such an excellent stability that it had not any change though it was placed in dark at room temperature for 6 months.
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