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

Published online by Cambridge University Press:  31 January 2011

Katsuhiro Nomura ,
Masakazu Daté ,
Hiroyuki Kageyama  and
Susumu Tsubota
Katsuhiro Nomura*
Affiliation:
Research Institute for Ubiquitous Energy Devices,National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
Masakazu Daté
Affiliation:
Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Onogawa, Tsukuba, Ibaraki 305-8569, Japan
Hiroyuki Kageyama
Affiliation:
Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), Midorigaoka, Ikeda, Osaka 563-8577, Japan
Susumu Tsubota
Affiliation:
Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Onogawa, Tsukuba, Ibaraki 305-8569, Japan
*
a)Address all correspondence to this author. e-mail: nomura-k@aist.go.jp
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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.

Keywords

CeramicChemical reactionPt
Type
Rapid Communications
Information
Journal of Materials Research , Volume 22 , Issue 10 , October 2007 , pp. 2647 - 2650
Copyright
Copyright © Materials Research Society 2007

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References

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