Record number :
1785650
Title of article :
Preparation of noble metal nanoparticles in supercritical carbon dioxide
Author/Authors :
Kameo، نويسنده , , Azusa and Yoshimura، نويسنده , , Tomokazu and Esumi، نويسنده , , Kunio، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
9
From page :
181
To page :
189
Abstract :
Silver, palladium, and silver–palladium nanoparticles have been prepared by reduction of silver acetylacetonate and palladium acetate with dimethylamine–borane in the presence of a fluorinated surfactant (FOMBLIN HC/P2-1000) in supercritical carbon dioxide. The sizes of silver and palladium nanoparticles increases with increasing concentrations of both the soluble precursors and FOMBLIN. The size of silver nanoparticles obtained is 3–12 nm, while that of palladium nanoparticles is 3–6 nm. For preparation of silver–palladium nanoparticles, the particle size is ranged between 4 and 5 nm and dependent on the feed molar ratio of palladium acetate. It is found that silver–palladium nanoparticles consist of a core-shell structure with enriched palladium in the surface.
Keywords :
Silver–palladium nanoparticle , Silver acetylacetonate , palladium acetate , Fluorinated surfactant , Supercritical carbon dioxide
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Journal title :
Colloids and Surfaces A Physicochemical and Engineering Aspects
Serial Year :
2003
Link To Document :
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