Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell Nanocrystals
Abstract Much attention has been paid to the development of high‐performance electrocatalytic reactions by exploiting the plasmonic properties of noble metal nanoparticles. In this study, ultrathin Pt layers with different coverage ratios were prepared on plasmonic octahedral Au nanoparticles (NPs)...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2023-09-01
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| Series: | ChemElectroChem |
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| Online Access: | https://doi.org/10.1002/celc.202300182 |
| _version_ | 1827854534910672896 |
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| author | Dr. Tatsuya Kameyama Kentaro Sato Prof. Takahisa Yamamoto Dr. Mamoru Tamura Prof. Takuya Iida Dr. Tatsuya Shoji Prof. Yasuyuki Tsuboi Prof. Tsukasa Torimoto |
| author_facet | Dr. Tatsuya Kameyama Kentaro Sato Prof. Takahisa Yamamoto Dr. Mamoru Tamura Prof. Takuya Iida Dr. Tatsuya Shoji Prof. Yasuyuki Tsuboi Prof. Tsukasa Torimoto |
| author_sort | Dr. Tatsuya Kameyama |
| collection | DOAJ |
| description | Abstract Much attention has been paid to the development of high‐performance electrocatalytic reactions by exploiting the plasmonic properties of noble metal nanoparticles. In this study, ultrathin Pt layers with different coverage ratios were prepared on plasmonic octahedral Au nanoparticles (NPs) by underpotential deposition (UPD) of Cu followed by redox replacement with Pt. The effect of the Cu UPD cycle on the deposited Cu and redox‐substituted Pt layers on octahedral Au NPs was investigated to evaluate the electrocatalytic activity of Pt‐decorated octahedral NPs for the oxygen reduction reaction (ORR). By varying the number of cycles of Cu UPD and Pt replacement, the coverage by the Pt layer on the Au NPs could be easily controlled. The resulting Pt‐coated octahedral Au NPs exhibited three times higher specific activity for ORR than commercial Pt/C nanocatalysts due to the deposited Pt layer reflecting the {111} plane of the core. The ORR activity of Pt‐coated octahedral Au NPs could be enhanced by photoexcitation with monochromatic LED irradiation, and the increase in enhancement factor was even greater when irradiated with a wavelength that could efficiently excite the localized surface plasmon resonance (LSPR) of the NPs. Analysis shows that this improvement is due to improved diffusion of oxygen to the electrode. |
| first_indexed | 2024-03-12T11:23:14Z |
| format | Article |
| id | doaj.art-8d8ceb4a92a54c7eb12d3e795a81c5aa |
| institution | Directory Open Access Journal |
| issn | 2196-0216 |
| language | English |
| last_indexed | 2024-03-12T11:23:14Z |
| publishDate | 2023-09-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | ChemElectroChem |
| spelling | doaj.art-8d8ceb4a92a54c7eb12d3e795a81c5aa2023-09-01T13:22:37ZengWiley-VCHChemElectroChem2196-02162023-09-011017n/an/a10.1002/celc.202300182Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell NanocrystalsDr. Tatsuya Kameyama0Kentaro Sato1Prof. Takahisa Yamamoto2Dr. Mamoru Tamura3Prof. Takuya Iida4Dr. Tatsuya Shoji5Prof. Yasuyuki Tsuboi6Prof. Tsukasa Torimoto7Department of Materials Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 JapanDepartment of Materials Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 JapanDepartment of Materials Design Innovation Engineering Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 JapanResearch Institute for Light-induced Acceleration System (RILACS) Osaka Metropolitan University 1-2 Gakuencho, Naka-ku Sakai Osaka 599-8570 JapanResearch Institute for Light-induced Acceleration System (RILACS) Osaka Metropolitan University 1-2 Gakuencho, Naka-ku Sakai Osaka 599-8570 JapanDepartment of Science Faculty of Science Kanagawa University 3-27-1 Rokkakubashi, Kanagawa-ku Yokohama Kanagawa 221-8686 JapanDepartment of Chemistry Graduate School of Science Osaka Metropolitan University 3-3-138 Sugimoto, Sumiyoshi-ku Osaka 558-8585 JapanDepartment of Materials Chemistry Graduate School of Engineering Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 JapanAbstract Much attention has been paid to the development of high‐performance electrocatalytic reactions by exploiting the plasmonic properties of noble metal nanoparticles. In this study, ultrathin Pt layers with different coverage ratios were prepared on plasmonic octahedral Au nanoparticles (NPs) by underpotential deposition (UPD) of Cu followed by redox replacement with Pt. The effect of the Cu UPD cycle on the deposited Cu and redox‐substituted Pt layers on octahedral Au NPs was investigated to evaluate the electrocatalytic activity of Pt‐decorated octahedral NPs for the oxygen reduction reaction (ORR). By varying the number of cycles of Cu UPD and Pt replacement, the coverage by the Pt layer on the Au NPs could be easily controlled. The resulting Pt‐coated octahedral Au NPs exhibited three times higher specific activity for ORR than commercial Pt/C nanocatalysts due to the deposited Pt layer reflecting the {111} plane of the core. The ORR activity of Pt‐coated octahedral Au NPs could be enhanced by photoexcitation with monochromatic LED irradiation, and the increase in enhancement factor was even greater when irradiated with a wavelength that could efficiently excite the localized surface plasmon resonance (LSPR) of the NPs. Analysis shows that this improvement is due to improved diffusion of oxygen to the electrode.https://doi.org/10.1002/celc.202300182core-shell structureelectrocatalystslocalized surface plasmon resonanceoxygen reduction reactionunderpotential deposition |
| spellingShingle | Dr. Tatsuya Kameyama Kentaro Sato Prof. Takahisa Yamamoto Dr. Mamoru Tamura Prof. Takuya Iida Dr. Tatsuya Shoji Prof. Yasuyuki Tsuboi Prof. Tsukasa Torimoto Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell Nanocrystals ChemElectroChem core-shell structure electrocatalysts localized surface plasmon resonance oxygen reduction reaction underpotential deposition |
| title | Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell Nanocrystals |
| title_full | Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell Nanocrystals |
| title_fullStr | Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell Nanocrystals |
| title_full_unstemmed | Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell Nanocrystals |
| title_short | Promoting Oxygen Reduction Reaction by Excitation of Localized Surface Plasmon of Shape‐ and Facet‐Controlled Octahedral Au@Pt Core‐Shell Nanocrystals |
| title_sort | promoting oxygen reduction reaction by excitation of localized surface plasmon of shape and facet controlled octahedral au pt core shell nanocrystals |
| topic | core-shell structure electrocatalysts localized surface plasmon resonance oxygen reduction reaction underpotential deposition |
| url | https://doi.org/10.1002/celc.202300182 |
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