Ultramarine colored: Solid-phase elution of Pt into perovskite oxides
| Autor: | Katsuhiro Nomura, Hiroyuki Kageyama, Masakazu Daté, Susumu Tsubota |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Elution Mechanical Engineering Inorganic chemistry Analytical chemistry Condensed Matter Physics Chemical reaction Ion Colored Mechanics of Materials visual_art visual_art.visual_art_medium General Materials Science Ceramic Inductively coupled plasma FOIL method Perovskite (structure) |
| Zdroj: | Journal of Materials Research. 22:2647-2650 |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/jmr.2007.0340 |
| Popis: | We have found a new route for preparing Pt containing perovskites. Ba containing perovskite powder, (La0.7Sr0.2Ba0.1)ScO3–δ (LSBS), reacted with Pt foil at 1898 K in air, and formed ultramarine colored Pt containing perovskite, (La0.7Sr0.2Ba0.1)(Sc,Pt)O3–δ, without changing the GdFeO3-type structure. The chemical compositions of the samples before and after firing, measured with inductively coupled plasma (ICP) optical emission spectrometry, were La: Sr: Ba: Sc = 0.70(1): 0.206(4): 0.101(2): 0.98(2) and La: Sr: Ba: Sc: Pt = 0.70(1): 0.197(4): 0.085(2): 0.95(2): 0.0062(2), respectively. The reaction proceeded not only at the interface between perovskite powder and Pt foil, but also over whole powder surface. We name this new preparation method the “solid-phase elution (SE) method”, because the process involves elution of Pt ions from the Pt foil to the LSBS perovskite lattice. It is expected that we can control the amount of Pt introduced into perovskites by using the SE method after optimizing the reaction time and temperature. |
| Databáze: | OpenAIRE |
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