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Reaction Acceleration of Nanoporous High-Purity Pd Film Formation by Dealloying of Al-Pd-N Film in pH-Controlled EDTA Solution

Published online by Cambridge University Press:  27 January 2020

Tomoya Nishi ,
Syuya Hasegawa ,
Takuji Ube  and
Takashi Ishiguro
Tomoya Nishi
Affiliation:
Tokyo University of Science, Department of Materials Science and Technology
Syuya Hasegawa
Affiliation:
Tokyo University of Science, Department of Materials Science and Technology
Takuji Ube
Affiliation:
Tokyo University of Science, Department of Materials Science and Technology
Takashi Ishiguro*
Affiliation:
Tokyo University of Science, Department of Materials Science and Technology
*
*(Email: ishiguro@rs.tus.ac.jp)
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Abstract

Metallic palladium (Pd) is used for hydrogen storage and detection. Fabrication of a nanoporous (NP) Pd structure can increase the specific surface area leading to a significant improvement in the sensitivity. In our previous study, we succeeded in forming a NP-Pd film by dealloying an Al-Pd alloy film using citric acid as a chelating agent. This method was environmentally friendly but had a long reaction time and a considerable amount of Al remained after dealloying; hence, the Pd purity was reduced. In this study, we succeeded in forming a higher purity NP-Pd film faster by dealloying the nitrogen-containing Al-Pd (Al-Pd-N) film using ethylene-diamine-tetraacetic-acid (EDTA) as a chelating material.

Keywords

nanostructurePdalloythin filmtransmission electron microscopy (TEM)
Type
Articles
Information
MRS Advances , Volume 5 , Issue 11: Energy and Environment , 2020 , pp. 531 - 538
Copyright
Copyright © Materials Research Society 2020

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