| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7922923 | Materials Chemistry and Physics | 2015 | 7 Pages |
Abstract
The deposition of gold nanoparticles in an electroplating solution containing gold (I) trisodium disulphite under synchrotron X-ray radiation was investigated. The nanoparticles grew and aggregated into clusters with increasing radiation time. This behavior is explained by evaluating the effect of Derjaguin-Landau-Verweyand-Overbeek (DLVO) interactions combining repulsive electrostatic and attractive van der Waals forces on the particle deposition process. The surface-enhanced Raman scattering (SERS) of 4,4â² -bipyridine (4bpy) in aqueous solution was measured using gold nanoparticles immobilized on silicon substrates under systematically-varied X-ray exposure. The substrates provided an in situ SERS spectrum for 1Â nM 4bpy. This demonstration creates new opportunities for chemical and environmental analyses through simple SERS measurements.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Akinobu Yamaguchi, Takeshi Matsumoto, Ikuo Okada, Ikuya Sakurai, Yuichi Utsumi,