ChemInform Abstract: Radiolytically Induced Formation and Optical Absorption Spectra of Colloidal Silver Nanoparticles in Supercritical Ethane.
Abstract
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ChemInform Abstract
Colloidal Ag nanoparticles are synthesized by pulse radiolytically induced reduction of AgClO4 in MeOH dispersed in supercritical ethane at 80 °C and 80—120 bar. Small Ag clusters like Ag2+, Ag3+, Ag42+, etc. are detected at short times after the pulse by absorption spectroscopy. Colloidal metallic Ag particles are identified by their characteristic plasmon absorption at 1—10 s after the 20 MeV pulse. As revealed by TEM the particles are less than 10 nm in diameter.