<Emphasis Type="Italic">In situ</Emphasis> analysis of the formation steps of gold nanoparticles by oleylamine reduction |
| |
| Authors: | M V Kirichkov A A Guda A P Budnyk T A Lastovina A L Bugaev V V Shapovalov Yu V Rusalev A V Chernyshev A V Soldatov |
| |
| Institution: | 1.International Research Center “Smart Materials”,Southern Federal University,Rostov-on-Don,Russia;2.Institute of Physical and Organic Chemistry,Southern Federal University,Rostov-on-Don,Russia |
| |
| Abstract: | A colloidal solution of gold nanoparticles is synthesized with the use of sodium tetrachloroaurate(III) as a precursor, oleylamine as a reducer and surfactant, and 1-octadecene as a solvent. Reaction stages are analyzed in situ by optical (UV-vis) absorption spectroscopy with a simultaneous analysis of particle sizes by dynamic light scattering and X-ray absorption near edge spectroscopy for the analysis of the gold oxidation state. After the synthesis the size of obtained nanoparticles is determined by transmission electron microscopy. The analysis of the obtained experimental data reveals the presence of three main steps in the reduction reaction mechanism, corresponding to Au3+, Au+, Au0, which enables the construction of the reaction model. The reaction mechanism involves the formation of gold(I) complexes with oleylamine, followed by polymerization and the formation of gold nanoclusters coated with oleylamine. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
