Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction
Platinum nanoparticles (NPs) modified with alkylamines containing various aromatic rings (benzyl, naphtyl, anthryl, and pyrenyl) were synthesized as model cathode catalysts for fuel cells to investigate the role of aromatic surface modification agents on catalytic performance. Surface modification o...
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| Format: | Article |
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Springer New York LLC
2018
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| author | Miyabayashi, Keiko Ishihara, Kenta Joshi, Prerna Shen, Zhongrong Miyake, Mikio |
| author_facet | Miyabayashi, Keiko Ishihara, Kenta Joshi, Prerna Shen, Zhongrong Miyake, Mikio |
| author_sort | Miyabayashi, Keiko |
| collection | ePrints |
| description | Platinum nanoparticles (NPs) modified with alkylamines containing various aromatic rings (benzyl, naphtyl, anthryl, and pyrenyl) were synthesized as model cathode catalysts for fuel cells to investigate the role of aromatic surface modification agents on catalytic performance. Surface modification of Pt was confirmed by nuclear magnetic resonance spectra for NPs and thermogravimetric analysis for carbon-supported catalysts. Surface modification of Pt NPs with aromatic alkylamines improved the electrocatalytic activities for the oxygen reduction reaction, whose activity values increased by increasing the number of aromatic rings. The effect of surface modification on the electronic properties of the catalyst was evaluated by X-ray photoelectron spectroscopy. A large positive shift in the Pt 4f binding energy of surface-modified catalyst, especially for anthryl and pyrenyl modifications, was observed, indicating that one of the important factors is metal–support interaction facilitated by the aromatic groups through the interactions with carbon support. |
| first_indexed | 2024-03-05T20:32:39Z |
| format | Article |
| id | utm.eprints-84371 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:32:39Z |
| publishDate | 2018 |
| publisher | Springer New York LLC |
| record_format | dspace |
| spelling | utm.eprints-843712019-12-28T01:48:50Z http://eprints.utm.my/84371/ Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction Miyabayashi, Keiko Ishihara, Kenta Joshi, Prerna Shen, Zhongrong Miyake, Mikio T Technology (General) Platinum nanoparticles (NPs) modified with alkylamines containing various aromatic rings (benzyl, naphtyl, anthryl, and pyrenyl) were synthesized as model cathode catalysts for fuel cells to investigate the role of aromatic surface modification agents on catalytic performance. Surface modification of Pt was confirmed by nuclear magnetic resonance spectra for NPs and thermogravimetric analysis for carbon-supported catalysts. Surface modification of Pt NPs with aromatic alkylamines improved the electrocatalytic activities for the oxygen reduction reaction, whose activity values increased by increasing the number of aromatic rings. The effect of surface modification on the electronic properties of the catalyst was evaluated by X-ray photoelectron spectroscopy. A large positive shift in the Pt 4f binding energy of surface-modified catalyst, especially for anthryl and pyrenyl modifications, was observed, indicating that one of the important factors is metal–support interaction facilitated by the aromatic groups through the interactions with carbon support. Springer New York LLC 2018-07 Article PeerReviewed Miyabayashi, Keiko and Ishihara, Kenta and Joshi, Prerna and Shen, Zhongrong and Miyake, Mikio (2018) Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction. Electrocatalysis, 9 (4). pp. 486-494. ISSN 1868-2529 http://dx.doi.org/10.1007/s12678-018-0462-6 |
| spellingShingle | T Technology (General) Miyabayashi, Keiko Ishihara, Kenta Joshi, Prerna Shen, Zhongrong Miyake, Mikio Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title | Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_full | Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_fullStr | Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_full_unstemmed | Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_short | Aromatic Ring Size Effect of a Surface Modification Agent on Platinum Nanoparticle Electrocatalysts for Oxygen Reduction Reaction |
| title_sort | aromatic ring size effect of a surface modification agent on platinum nanoparticle electrocatalysts for oxygen reduction reaction |
| topic | T Technology (General) |
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