2016年5月
Synthesis of bimetallic Pt–Ru nanoparticles by bioreduction using Shewanella algae for application to direct methanol fuel cell
Journal of Chemical Engineering of Japan
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- 巻
- 49
- 号
- 5
- 開始ページ
- 488
- 終了ページ
- 492
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1252/jcej.15we077
© 2016 The Society of Chemical Engineers, Japan. Bimetallic Pt–Ru nanoparticles were successfully synthesized using a reducing bacterium, Shewanella algae (S. algae), by the bioreduction of Pt(IV) and Ru(III) in an aqueous solution, where H 2 PtCl 6 and RuCl 3 were dissolved. These bimetallic nanoparticles were expected to be preferably used as catalyst in a direct methanol fuel cell (DMFC) because inactivation of their catalytic activity can be avoided by the effect of Ru to remove CO from Pt surface. In this study, two patterns in mixing procedure of H 2 PtCl 6 and RuCl 3 were compared for the synthesis of the catalyst particles by the bioreduction. The open circuit voltage was monitored at a DMFC using the electrodes with catalyst nanoparticles synthesized by the bioreduction of S. algae. Continuous inactivation of the catalytic activity of the nanoparticles was observed when the nanoparticles were synthesized with continuous admixture of RuCl 3 to H 2 PtCl 6 during the bioreduction or without RuCl 3 . On the other hand, the inactivation was stopped to preserve the open-circuit voltage when H 2 PtCl 6 and RuCl 3 were mixed prior to the bioreduction. This feature which is preferable for DMFC can be ascribed to alloying Ru with Pt in the resulted nanoparticles. It is remarkable that Ru(III) which is hardly reduced by S. algae due to its relatively low standard electrode potential can be alloyed with Pt to produce the bimetallic Pt–Ru nanoparticles in the present condition.
- リンク情報
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- DOI
- https://doi.org/10.1252/jcej.15we077
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000379619400013&DestApp=WOS_CPL
- URL
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84969204077&origin=inward
- ID情報
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- DOI : 10.1252/jcej.15we077
- ISSN : 0021-9592
- SCOPUS ID : 84969204077
- Web of Science ID : WOS:000379619400013