gamma-Irradiation-induced preparation of Ag and Au nanoparticles and their characterizations

Using gamma-irradiation-induced reduction in the field of a Co-60 gamma-ray source, colloidal silver and gold nanoparticles were prepared from their corresponding metal salts in aqueous solution and compared with those by chemical reduction. The radiation-based method provided silver nanoparticles with higher concentration and narrower size distribution than those obtained by chemical reduction method while there was no significant difference between the two strategies for the preparation of gold nanoparticles. gamma-Irradiation of 1.0 x 10(-3) M AgNO3 solution resulted in nearly 100 times more highly concentrated silver colloids than those by citrate reduction. Furthermore, the radiation method could lead to more highly concentrated silver colloids by simply increasing the concentration of AgNO3 solution up to 2.0 x 10(-2) M. The two metal nanoparticles prepared by the two different methods were characterized by UV-vis spectrophotometry and transmission electron microscopy (TEM), and compared regarding to their respective attainable concentrations and size distribution. (c) 2007 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2007-10
Language
ENG
Keywords

GOLD NANOPARTICLES; OPTICAL-PROPERTIES; AQUEOUS-SOLUTION; COLLOIDAL GOLD; METAL-CLUSTERS; SILVER; PARTICLES; SURFACE; REDUCTION; SIZE

Citation

MATERIALS CHEMISTRY AND PHYSICS, v.105, no.2-3, pp.325 - 330

ISSN
0254-0584
URI
http://hdl.handle.net/10203/1560
Appears in Collection
CBE-Journal Papers(저널논문)
Files in This Item
MCP-6806-Revised Manuscript.pdf(1.11 MB)Download
  • Hit : 1222
  • Download : 1564
  • Cited 0 times in thomson ci
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡClick to seewebofscience_button
⊙ Cited 74 items in WoSClick to see citing articles inrecords_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0