|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 10 van 87 gevonden artikelen
| Titel: |
An X-ray photoelectron spectroscopy study of uranyl-chitosan interaction |
| Auteur: |
Veleshko Alexander N. Veleshko Irina E. Teterin Anton Yu. Maslakov Konstantin I. Vukčević Labud Teterin Yury A. Ivanov Kirill E. |
| Verschenen in: |
Nuclear technology & radiation protection |
| Paginering: | Jaargang 23 (2008) nr. 2 pagina's 43-50 |
| Jaar: |
2008 |
| Inhoud: |
An X-ray photoelectron spectroscopy study of uranium sorption by spherically-granulated chitosan in sulphate solutions, as well as the study of the nature of the U(VI) - chitosan interaction was carried out in this work. The X-ray photoelectron spectroscopy analysis showed that the uranyl - chitosan interaction results in the formation of complexes with aminogroup nitrogen, and possibly chitin ring oxygens and free hydroxyl groups in the equatorial plane. Under the UHV in the spectrometer chamber, the uranyl-amin and uranyl-hyroxide bonds were shown to break and tetravalent uranium compounds were shown to form on the sample surface. Hydroxyl groups were shown to evaporate. The calculated DG0 = -1,3 kJ/mol can be an evidence of several concurrent processes, some of which require energy, as well as of the formation of a surface chemical compound. |
| Uitgever: |
VINČA Institute of Nuclear Sciences (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 10 van 87 gevonden artikelen
| << vorige | volgende >> |