Adsorption of halides on specific reaction sites on the silver sol surface as investigated by Raman spectroscopy

✍ Scribed by Sung Soo Park; Kwan Kim; Myung Soo Kim

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 527 KB
• Volume: 230
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(94)01131-1

✦ Synopsis

The catalytic photoreaction site on a silver sol surface has been investigated by surface-enhanced Raman scattering (SERS). All the available sites on the sol surface seemed to be SERS active. Two different sites, catalytic and non-catalytic, seemed to exist simultaneously on the sol surface. Halide ions appeared to adsorb preferentially on the catalytic reaction site where acridine could undergo photoreaction. The authentic SER spectrum of acridine was concluded to arise from the species adsorbed on the non-catalytic site. The fraction of catalytic sites was estimated to amount to around 23% with regard to the total available sites on the silver sol surface.