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Ultramarine colored: Solid-phase elution of Pt into perovskite oxides

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Abstract

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.

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Acknowledgments

We express our thanks to Prof. M. Haruta of Tokyo Metropolitan University for the fruitful discussion. This work was partially supported by the Ministry of Education, Science, Sports, and Culture, Grant-in-Aid for Scientific Research on Priority Areas, Chemistry of Coordinating Space.

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Authors and Affiliations

  1. Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka, 563-8577, Japan

    Katsuhiro Nomura & Hiroyuki Kageyama

  2. Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Onogawa, Tsukuba, Ibaraki, 305-8569, Japan

    Masakazu Daté & Susumu Tsubota

Authors
  1. Katsuhiro Nomura
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  2. Masakazu Daté
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  3. Hiroyuki Kageyama
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  4. Susumu Tsubota
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Correspondence to Katsuhiro Nomura.

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Nomura, K., Daté, M., Kageyama, H. et al. Ultramarine colored: Solid-phase elution of Pt into perovskite oxides. Journal of Materials Research 22, 2647–2650 (2007). https://doi.org/10.1557/JMR.2007.0340

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