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dc.creatorGlinka, Yu. D.en_US
dc.creatorKrak, T. B.en_US
dc.date.accessioned2006-06-15T15:19:26Z
dc.date.available2006-06-15T15:19:26Z
dc.date.issued1994en_US
dc.identifier1994-FD'-06en_US
dc.identifier.urihttp://hdl.handle.net/1811/13032
dc.description1. Glinka Yu D., Degoda V. Ya, Krak T.B. et all. $//$ J. Appl. Spectr. 1993, 59, No 3-4. 286-292en_US
dc.descriptionAuthor Institution: Institute of Surface Chemistry of the Ukrainian Academy of Sciences; Department of Physics, Kiev State Universityen_US
dc.description.abstractLow-temperature luminescence spectra of molecular ions $UO_{2}{^{2+}}$ adsorbed on disperse $SiO_{2}$ surface investigated under selective laser excitation. It was determined that molecular ions are very sensitive luminescent probes for investigations of active in adsorption centers (AC) on disperse silicon dioxide surface. Different AC causes many elementary luminescene spectra. It was established urnayl ions link with the surface by means of water molecules. $H_{2}O$-molecules coordinate uranium in water-uranyl completes and take part in the formation of absorption bonds. One can observe two AC types corresponding to physical and chemical adsorption states [1]. To our mind, the first type complexes are fixed on surface hydroxyls by hydrogen bonds. The chemosorbed complexes are formed under interaction of water molecules in water-uranyl complexes with surface silicon, bridging Oxygen atoms, and surface structural defects. It is established that $UO_{2}{^{2+}}$ ions are fixed on the surface by means of two or three water molecules forming water-uranyl completes. Active in absorption centers for these complexes are surface sylanol groups.en_US
dc.format.extent126040 bytes
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dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleSELECTIVE LASER SPECTROSCOPY OF MOLECULAR IONS $UO_{2}{^{2+}}$ ADSORBED ON DISPERSE $SiO_{2}$ SURFACEen_US
dc.typearticleen_US


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