Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications
The micro/nanocone structures of noble metals play a critical role as heterogeneous electrocatalysts that provide excellent activity. We successfully fabricated platinum cones by electrodeposition using non-penetrated porous membranes as templates. This method involved the preparation of template me...
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MDPI AG
2021-07-01
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| Series: | Quantum Beam Science |
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| Online Access: | https://www.mdpi.com/2412-382X/5/3/21 |
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| author | Yuma Sato Hiroshi Koshikawa Shunya Yamamoto Masaki Sugimoto Shin-ichi Sawada Tetsuya Yamaki |
| author_facet | Yuma Sato Hiroshi Koshikawa Shunya Yamamoto Masaki Sugimoto Shin-ichi Sawada Tetsuya Yamaki |
| author_sort | Yuma Sato |
| collection | DOAJ |
| description | The micro/nanocone structures of noble metals play a critical role as heterogeneous electrocatalysts that provide excellent activity. We successfully fabricated platinum cones by electrodeposition using non-penetrated porous membranes as templates. This method involved the preparation of template membranes by the swift-heavy-ion irradiation of commercially available polycarbonate films and subsequent chemical etching in an aqueous NaOH solution. The surface diameter, depth, aspect ratio and cone angle of the resulting conical pores were controlled in the ranges of approximately 70–1500 nm, 0.7–11 μm, 4–12 and 5–13°, respectively, by varying the etching conditions, which finally produced size- and shape-controlled platinum cones with nanotips. In order to demonstrate the electrocatalytic activity, electrochemical measurements were performed for the ethanol oxidation reaction. The oxidation activity was found to be up to 3.2 times higher for the platinum cone arrays than for the platinum plate. Ion-track etching combined with electrodeposition has the potential to be an effective method for the fabrication of micro/nanocones with high electrocatalytic performance. |
| first_indexed | 2024-03-10T07:16:02Z |
| format | Article |
| id | doaj.art-0563ce4db5cd4607874a50e0408c1993 |
| institution | Directory Open Access Journal |
| issn | 2412-382X |
| language | English |
| last_indexed | 2024-03-10T07:16:02Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
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| series | Quantum Beam Science |
| spelling | doaj.art-0563ce4db5cd4607874a50e0408c19932023-11-22T15:02:14ZengMDPI AGQuantum Beam Science2412-382X2021-07-01532110.3390/qubs5030021Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic ApplicationsYuma Sato0Hiroshi Koshikawa1Shunya Yamamoto2Masaki Sugimoto3Shin-ichi Sawada4Tetsuya Yamaki5Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Gunma, JapanTakasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki 370-1292, Gunma, JapanTakasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki 370-1292, Gunma, JapanTakasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki 370-1292, Gunma, JapanTakasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Takasaki 370-1292, Gunma, JapanGraduate School of Science and Technology, Gunma University, Kiryu 376-8515, Gunma, JapanThe micro/nanocone structures of noble metals play a critical role as heterogeneous electrocatalysts that provide excellent activity. We successfully fabricated platinum cones by electrodeposition using non-penetrated porous membranes as templates. This method involved the preparation of template membranes by the swift-heavy-ion irradiation of commercially available polycarbonate films and subsequent chemical etching in an aqueous NaOH solution. The surface diameter, depth, aspect ratio and cone angle of the resulting conical pores were controlled in the ranges of approximately 70–1500 nm, 0.7–11 μm, 4–12 and 5–13°, respectively, by varying the etching conditions, which finally produced size- and shape-controlled platinum cones with nanotips. In order to demonstrate the electrocatalytic activity, electrochemical measurements were performed for the ethanol oxidation reaction. The oxidation activity was found to be up to 3.2 times higher for the platinum cone arrays than for the platinum plate. Ion-track etching combined with electrodeposition has the potential to be an effective method for the fabrication of micro/nanocones with high electrocatalytic performance.https://www.mdpi.com/2412-382X/5/3/21ion-track etchingelectrodepositionmicro/nano-sized metal conestemplate synthesiselectrocatalyst |
| spellingShingle | Yuma Sato Hiroshi Koshikawa Shunya Yamamoto Masaki Sugimoto Shin-ichi Sawada Tetsuya Yamaki Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications Quantum Beam Science ion-track etching electrodeposition micro/nano-sized metal cones template synthesis electrocatalyst |
| title | Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications |
| title_full | Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications |
| title_fullStr | Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications |
| title_full_unstemmed | Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications |
| title_short | Fabrication of Size- and Shape-Controlled Platinum Cones by Ion-Track Etching and Electrodeposition Techniques for Electrocatalytic Applications |
| title_sort | fabrication of size and shape controlled platinum cones by ion track etching and electrodeposition techniques for electrocatalytic applications |
| topic | ion-track etching electrodeposition micro/nano-sized metal cones template synthesis electrocatalyst |
| url | https://www.mdpi.com/2412-382X/5/3/21 |
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