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Tuning the coalescence degree in the growth of Pt–Pd nanoalloys
https://oist.repo.nii.ac.jp/records/2175
https://oist.repo.nii.ac.jp/records/2175f75a0889-f916-4ded-9a59-0687ccf9909b
名前 / ファイル | ライセンス | アクション |
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Nelli-2021-Tuning the coalescence degree in th (4.6 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-07-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Tuning the coalescence degree in the growth of Pt–Pd nanoalloys | |||||
言語 | ||||||
言語 | eng | |||||
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× Cerbelaud, Manuella× Ferrando, Riccardo× Minnai, Chloé |
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書誌情報 |
en : Nanoscale Advances 巻 3, 号 3, p. 836-846, 発行日 2020-12-09 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Coalescence is a phenomenon in which two or more nanoparticles merge to form a single larger aggregate. By means of gas-phase magnetron-sputtering aggregation experiments on Pt-Pd nanoalloys, it is shown that the degree of coalescence can be tuned from a growth regime in which coalescence is negligible to a regime where the growth outcome is dominated by coalescence events. This transition is achieved by varying both the length of the aggregation zone and the pressure difference between the aggregation and the deposition chamber. In the coalescence-dominated regime, a wide variety of coalescing aggregates is produced and analyzed by TEM. The experimental results are interpreted with the aid of molecular-dynamics simulations. This allows to distinguish four different steps through which coalescence proceeds towards equilibrium. These steps, occurring on a hierarchy of well-separated time scales, consist in: (i) alignment of atomic columns; (ii) alignment of close-packed atomic planes; (iii) equilibration of shape; (iv) equilibration of chemical ordering. | |||||
出版者 | ||||||
出版者 | Royal Society of Chemistry | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2516-0230 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1039/D0NA00891E | |||||
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://pubs.rsc.org/en/content/articlelanding/2021/NA/D0NA00891E#!divAbstract | |||||
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 |