Tin-clay complexes: A Mossbauer study
| dc.contributor.author | Petridis, D. | en |
| dc.contributor.author | Bakas, T. | en |
| dc.date.accessioned | 2015-11-24T18:27:33Z | |
| dc.date.available | 2015-11-24T18:27:33Z | |
| dc.identifier.issn | 0009-8604 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/16050 | |
| dc.rights | Default Licence | - |
| dc.subject | clay | en |
| dc.subject | montmorillonite | en |
| dc.subject | mossbauer | en |
| dc.subject | intercalation | en |
| dc.title | Tin-clay complexes: A Mossbauer study | en |
| heal.abstract | Divalent tin has been intercalated into montmorillonite by reacting partially hydrolyzed solutions of SnCl2 under aerobic conditions at pH = 2.8 with aqueous dispersions of the smectite mineral. The precursor tin solution contains mainly the cationic trimeric ion Sn-3(OH)(4)(2+), which is shown to take part in the exchange reactions with the surface cations of the mineral. Variable temperature Mossbauer spectroscopy was used in order to: 1) directly probe changes in the oxidation state and coordination environment of Sn2+ in the process of intercalation; 2) examine the nature of tin atoms on the external surfaces and in the interlayer space of the clay platelets; and 3) study the dynamics of motion of tin atoms on the clay surfaces. The main conclusion from these studies is that about 75% of the Sn2+ ions undergo extensive oxidation to the +4 state with concomitant hydrolysis and condensation that lead to the precipitation of SnO2 on the external surfaces of the clay. The rest of the Sn2+ ions are introduced into the lamellar zone, as evidenced by the detailed Mossbauer analysis of the dynamics of motion of tin atoms on the clay surfaces. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://A1997XB13300008 | - |
| heal.journalName | Clays and Clay Minerals | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1997 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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