Photocatalytic Reduction of Zn(II) with Participation of ZnS Nanoparticles |
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Authors: | A. E. Raevskaya A. V. Korzhak A. L. Stroyuk S. Ya. Kuchmii |
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Affiliation: | (1) L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, 31 Nauky Prospekt, 03028 Kyiv, Ukraine |
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Abstract: | We have studied the photochemical processes occurring in colloidal ZnS solutions containing zinc chloride and sodium sulfite as additives. Irradiation of such systems leads to reduction of Zn(II), the rate of which increases as the size of the ZnS nanoparticles decreases. Based on analysis of the kinetic curves for the reaction, we hypothesize that photoreduction of Zn(II) is a two-electron process. __________ Translated from Teoreticheskaya i Eksperimental'naya Khimiya, Vol. 41, No. 4, pp. 231–235, July–August, 2005. |
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Keywords: | photocatalysis semiconductors photoreduction ZnS nanoparticles zinc quantum size effects |
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