The formation of Ag clusters on silica colloidal nanoparticles was achieved by photoreduction of silver ions with visible laser irradiation. A mechanism of this process was proposed by observing the plasmon resonance bands of the silver clusters in UV–visible absorption spectroscopy. These Ag/SiO2 colloids are SERS-active and can be used to detect products that could be formed by heterogeneous catalytic reactions of ligands adsorbed on the colloidal surface.
Adsorption mechanism of 2-amino,5-nitropyrimidine on silver substrates, as detected by surface-enhanced Raman scattering / M. MUNIZ-MIRANDA. - In: VIBRATIONAL SPECTROSCOPY. - ISSN 0924-2031. - STAMPA. - 29:(2002), pp. 229-233. [10.1016/S0924-2031(01)00178-3]
Adsorption mechanism of 2-amino,5-nitropyrimidine on silver substrates, as detected by surface-enhanced Raman scattering
MUNIZ-MIRANDA, MAURIZIO
2002
Abstract
The formation of Ag clusters on silica colloidal nanoparticles was achieved by photoreduction of silver ions with visible laser irradiation. A mechanism of this process was proposed by observing the plasmon resonance bands of the silver clusters in UV–visible absorption spectroscopy. These Ag/SiO2 colloids are SERS-active and can be used to detect products that could be formed by heterogeneous catalytic reactions of ligands adsorbed on the colloidal surface.
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