Photoinduced electron transfer at the surface of nanosized silver particles as monitored by EPR spectroscopy

EPR spectroscopy was employed in study of photoinduced electron transfer on nanosized silver particles. Radicals were observed for the silver colloid with methylviologen (MV), nitrophenol and methanol with irradiation of UV lights. The wavelength dependence of EPR spectra of silver colloid with methanol indicates that plasmon resonance may be critical for the formation of the radicals on the nanosized silver particles.