Abstract
Reduction of HAuCl4 has been investigated pulse radiolytically in water and in water-in-oil microemulsions. Rate constants have been determined for[formula omitted] (where[formula omitted] is an unidentified radical). On the longer time scale formation of colloidal gold,[formula omitted], has been observed. Rate of colloidal gold formation has also been studied in the bombardment of HAuCl4 solutions by 353-nm 60-mJ 3-5-ns laser pulses. Hydrodynamic diameters and polydispersities of empty and colloidal-gold-containing microemulsions have been determined by dynamic laser light scattering to be 150 and 220 Å, respectively. Morphologies of colloidal gold have been determined by electron micrography. There are a number of advantages of forming colloidal particles in microemulsions. Under identical conditions a greater amount of colloidal particles is formed than that in water. Colloidal gold particles formed in microemulsions are smaller and more uniform than those obtained in homogeneous solutions.
| Original language | English |
|---|---|
| Pages (from-to) | 2574-2579 |
| Number of pages | 6 |
| Journal | Journal of the American Chemical Society |
| Volume | 105 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1983 Jan 1 |
| Externally published | Yes |
ASJC Scopus subject areas
- Catalysis
- Chemistry(all)
- Biochemistry
- Colloid and Surface Chemistry