V2O5 nanoparticles obtained from a synthetic bariandite-like vanadium oxide: synthesis, characterization and electrochemical behavior in an ionic liquid
| Autor: | Roberto M. Torresi, Tânia M. Benedetti, Jaísa F. Soares, Marcela M. Oliveira, Dayane M. Reis, Aldo J. G. Zarbin, Willian G. Menezes |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Analytical chemistry Infrared spectroscopy Nanoparticle Vanadium oxide Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound symbols.namesake Electrophoretic deposition Colloid and Surface Chemistry chemistry Chemical engineering Transmission electron microscopy Ionic liquid symbols Cyclic voltammetry Raman spectroscopy |
| Zdroj: | Journal of colloid and interface science. 337(2) |
| ISSN: | 1095-7103 |
| Popis: | Highly stable and crystalline V(2)O(5) nanoparticles with an average diameter of 15 nm have been easily prepared by thermal treatment of a bariandite-like vanadium oxide, V(10)O(24) x 9 H(2)O. Their characterization was carried out by powder X-ray diffractometry (XRD), Fourier transform infrared (FT-IR) and Raman spectroscopies, and transmission electron microscopy (TEM). The fibrous and nanostructured film obtained by electrophoretic deposition of the V(2)O(5) nanoparticles showed good electroactivity when submitted to cyclic voltammetry in an ionic liquid-based electrolyte. The use of this film for the preparation of a nanostructured electrode led to an improvement of about 50% in discharge capacity values when compared with similar electrodes obtained by casting of a V(2)O(5) xerogel. |
| Databáze: | OpenAIRE |
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