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Octahedral Growth of PtPd Nanocrystals
https://oist.repo.nii.ac.jp/records/2199
https://oist.repo.nii.ac.jp/records/21994c2be0c1-bbed-4594-a0c0-3ff770891b5a
名前 / ファイル | ライセンス | アクション |
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Nelli-2021-Octahedral Growth of PtPd Nanocryst (3.9 MB)
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Creative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-08-24 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Octahedral Growth of PtPd Nanocrystals | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | nanoalloy | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | PtPd | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | molecular dynamics | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | nanocrystals | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | growth | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Nelli, Diana
× Nelli, Diana× Roncaglia, Cesare× Ahearn, Samuel× Di Vece, Marcel× Ferrando, Riccardo× Minnai, Chloé |
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書誌情報 |
en : Catalysts 巻 11, 号 6, p. 718, 発行日 2021-06-09 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | PtPd nanoparticles are among the most widely studied nanoscale systems, mainly because of their applications as catalysts in chemical reactions. In this work, a combined experimental-theoretical study is presented about the dependence of growth shape of PtPd alloy nanocrystals on their composition. The particles are grown in the gas phase and characterized by STEM-HRTEM. PtPd nanoalloys present a bimodal size distribution. The size of the larger population can be tuned between 3.8 ± 0.4 and 14.1 ± 2.0 nm by controlling the deposition parameters. A strong dependence of the particle shape on the composition is found: Pd-rich nanocrystals present more rounded shapes whereas Pt-rich ones exhibit sharp tips. Molecular dynamics simulations and excess energy calculations show that the growth structures are out of equilibrium. The growth simulations are able to follow the growth shape evolution and growth pathways at the atomic level, reproducing the structures in good agreement with the experimental results. Finally the optical absorption properties are calculated for PtPd nanoalloys of the same shapes and sizes grown in our experiments. | |||||
出版者 | ||||||
出版者 | MDPI | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2073-4344 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.3390/catal11060718 | |||||
権利 | ||||||
権利情報 | © 2021 The Author(s). | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.mdpi.com/2073-4344/11/6/718 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |