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Pt-17 nanocluster electrocatalysts: preparation and origin of high oxygen reduction reaction activity
| Title: | Pt-17 nanocluster electrocatalysts: preparation and origin of high oxygen reduction reaction activity |
| Authors: | Kawawaki, Tokuhisa Browse this author | | Mitomi, Yusuke Browse this author | | Nishi, Naoki Browse this author | | Kurosaki, Ryuki Browse this author | | Oiwa, Kazutaka Browse this author | | Tanaka, Tomoya Browse this author | | Hirase, Hinoki Browse this author | | Miyajima, Sayuri Browse this author | | Niihori, Yoshiki Browse this author | | Osborn, D. J. Browse this author | | Koitaya, Takanori Browse this author | | Metha, Gregory F. Browse this author | | Yokoyama, Toshihiko Browse this author | | Iida, Kenji Browse this author →KAKEN DB | | Negishi, Yuichi Browse this author |
| Issue Date: | 24-Mar-2023 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Nanoscale |
| Publisher DOI: | 10.1039/d3nr01152f |
| Abstract: | We recently found that [Pt-17(CO)(12)(PPh3)(8)](z) (Pt = platinum; CO = carbon monoxide; PPh3 = triphenylphosphine; z = 1+ or 2+) is a Pt nanocluster (Pt NC) that can be synthesized with atomic precision in air. The present study demonstrates that it is possible to prepare a Pt-17-supported carbon black (CB) catalyst (Pt-17/CB) with 2.1 times higher oxygen reduction reaction (ORR) activity than commercial Pt nanoparticles/CB by the adsorption of [Pt-17(CO)(12)(PPh3)(8)](z) onto CB and subsequent calcination of the catalyst. Density functional theory calculation strongly suggests that the high ORR activity of Pt-17/CB originates from the surface Pt atoms that have an electronic structure appropriate for the progress of ORR. These results are expected to provide design guidelines for the fabrication of highly active ORR catalysts using Pt NCs with a diameter of about 1 nm and thereby enabling the use of reduced amounts of Pt in polymer electrolyte fuel cells. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/89760 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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