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Teoret. i eksperim. khimiya. 2004. Vol.40 No. 2. p. 125-129

Polysulfide Ion Oxidation Induced by CdS Nanoparticles under Impulse Photolysis


A. L. Stroyuk, A. E. Raevskaya, S. Ya. Kuchmy

L. V. Pysarzhevsky Institute of Physical Chemistry, National Academy of Sciences of Ukraine
31 Prosp. Nauky, 03028 Kyiv, Ukraine. E-mail: photochem@ukrpost.net

Photochemical behaviour of colloidal CdS solutions, containing polysulfide ions, under pulse irradiation was studied. It was established that a species absorbing light in the 520-650 nm region is an anion-radical S3 . . Decay peculiarities of this intermediate in different conditions were studied and scheme for mecha- nism of these processes were proposed.

Key words photocatalysis, nanoparticles of semiconductors, cadmium sulfide, polysulfide ions, impulse irradiation.