| Título | Efficient, Low Cost Synthesis of Sodium Platinum Bronze NaxPt3O4 |
|---|---|
| Autores | Horwat, David , Dehmas, Moukrane , Gutierrez, Alejandro , Pierson, Jean-Francois , Anders, Andre , Soldera, Flavio , ENDRINO ARMENTEROS, JOSÉ LUIS |
| Publicación externa | Si |
| Medio | Chem. Mater. |
| Alcance | Article |
| Naturaleza | Científica |
| Cuartil JCR | 1 |
| Cuartil SJR | 1 |
| Impacto JCR | 8.238 |
| Impacto SJR | 4.181 |
| Web | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84863697334&doi=10.1021%2fcm301179x&partnerID=40&md5=f80a26676a3138b7d774192608117d75 |
| Fecha de publicacion | 10/07/2012 |
| ISI | 000306200700003 |
| Scopus Id | 2-s2.0-84863697334 |
| DOI | 10.1021/cm301179x |
| Abstract | An efficient, low cost synthesis of sodium platinum bronze Na xPt 3O 4 was investigated. PtO y films were deposited on silicon and SLG slides. Chemical and structural evolutions of the films upon annealing in air were probed by X-ray absorption near edge structure (XANES), X-ray diffraction (XRD), and high resolution transmission electron microscopy (HRTEM). An average oxidation state of 3.2 is derived from the XANES signal of the as-deposited films, corresponding to stoichiometry PtO 1.6. This reflects the fact that sputter-deposited PtO y films are mixtures of PtO and PtO 2 phases at the nanometer scale. When using a silicon substrate, further oxidation of the film is observed up to an average oxidation state of 3.6 upon annealing at 300°C, corresponding to a mixture of 80 mol % PtO 2 and 20 mol % PtO. XRD analyses indicated that the film remained nanocrystalline during the process. |
| Palabras clave | thin films; platinum; oxide; soft synthesis; sodium |
| Miembros de la Universidad Loyola |