Voltammetric characterization of structural titanium species in zeotypes

Ti 4+ ions structurally contained in titanium silicalite (TS-1) and ETS-10 samples, two nanoporous materials, have been studied by means of voltammetric measurements. Both structurally tetrahedral and octahedral Ti 4+ ions show electrochemical response. In particular, by using acid solutions, it was...

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Bibliographic Details
Published in:Electrochemistry communications 2000-05, Vol.2 (5), p.349-352
Main Authors: Bodoardo, S, Geobaldo, F, Penazzi, N, Arrabito, M, Rivetti, F, Spanò, G, Lamberti, C, Zecchina, A
Format: Article
Language:English
Subjects:
Chemistry
Cyclic voltammetry
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
Other electrodes
Titanosilicates
Zeolites
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Summary:Ti 4+ ions structurally contained in titanium silicalite (TS-1) and ETS-10 samples, two nanoporous materials, have been studied by means of voltammetric measurements. Both structurally tetrahedral and octahedral Ti 4+ ions show electrochemical response. In particular, by using acid solutions, it was possible to distinguish, in TS-1, between signals coming from different titanium species. Finally, it has been proven that the use of acid solutions allows us to discriminate between Ti 4+ ions in TS-1 and in ETS-10 since only the former is able to coordinate water molecules, the reduction of which can be monitored by the presence of a peak at −600 mV/SSE.
ISSN:1388-2481
1873-1902
DOI:10.1016/S1388-2481(00)00021-7