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Biopreparation of Highly Dispersed Pd Nanoparticles on Bacterial Cell and Their Catalytic Activity for Polymer Electrolyte Fuel Cell

Published online by Cambridge University Press:  01 February 2011

Takashi Ogi ,
Ryuichi Honda ,
Koshiro Tamaoki ,
Norizo Saito  and
Yasuhiro Konishi
Takashi Ogi
Affiliation:
[email protected], Osaka Prefecture University, Sakai, Japan
Ryuichi Honda
Affiliation:
[email protected], Osaka Prefecture University, Sakai, Japan
Koshiro Tamaoki
Affiliation:
[email protected], Osaka Prefecture University, Sakai, Japan
Norizo Saito
Affiliation:
[email protected], Osaka Prefecture University, Sakai, Japan
Yasuhiro Konishi
Affiliation:
[email protected], Osaka Prefecture University, Sakai, Japan
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Abstract

Rapid development in the area of low-temperature fuel cells has led to increased attention on catalyst synthesis with cost effective and environmentally-benign technology (green chemistry). In this study, a highly dispersed palladium nanoparticle catalyst was successfully prepared on a bacterial cell support by a single-step, room-temperature microbial method without dispersing agents. The metal ion reducing bacterium Shewanella oneidensis were able to reduce palladium ions into insoluble palladium at room temperature when formate was provided as the electron donor. The prepared biomass-supported palladium nanoparticles were characterized for their catalytic activity as anodes in polymer electric membrane fuel cell for power production. The maximum power generation of the biomass-supported palladium catalyst was up to 90% of that of a commercial palladium catalyst.

Keywords

biological synthesis (chemical reaction)Pdcatalytic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1272: Symposia KK/LL/NN/OO/PP – Integrated Miniaturized Materials-From Self-Assembly to Device Integration , 2010 , 1272-PP06-03
Copyright
Copyright © Materials Research Society 2010

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