Effect of pyrene additive on the growth of gold nanoparticles in aqueous sodium alkyl sulfate micellar solutions
Journal
Journal of the Chinese Chemical Society
Journal Volume
53
Journal Issue
6
Pages
1263-1268
Date Issued
2006
Author(s)
Deng, J.-P.
Abstract
Abstract Gold nanoparticles (NPs) were synthesized by chemical reduction in sodium octyl sulfate (SOS), sodium decyl sulfate (SDeS) and sodium dodecyl sulfate (SDS) solutions. Gold NPs prepared in SDS solutions have the smallest size and the highest stability among them. The stability of gold NPs was reflected in the hydrophobic property of the protecting surfactant. Size‐controlled synthesis of gold NPs was further achieved with the addition of pyrene in all surfactant solutions. Experimental results indicated that the combination of SDS and pyrene has the extraordinary effect in decreasing the size and narrowing the dispersity of gold NPs. Micellar electrokinetic capillary chromatography (MEKC) showed that the chemical reaction between pyrene and gold complexes was attributed to the formation of gold NPs inside the micelles at the embryonic stage.
SDGs
Type
journal article