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Gas-Phase Synthesis of Trimetallic Nanoparticles
https://oist.repo.nii.ac.jp/records/1070
https://oist.repo.nii.ac.jp/records/1070bcb4c8b1-6c6b-4afc-8b2e-6fbff1750160
名前 / ファイル | ライセンス | アクション |
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acs.chemmater.9b00129 (9.4 MB)
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ACS AuthorChoice
(https://pubs.acs.org/page/policy/authorchoice_termsofuse.html) |
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-08-28 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Gas-Phase Synthesis of Trimetallic Nanoparticles | |||||
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) |
Mattei, Jean-Gabriel
× Mattei, Jean-Gabriel× Grammatikopoulos, Panagiotis× Zhao, Junlei× Singh, Vidyadhar× Vernieres, Jerome× Steinhauer, Stephan× Porkovich, Alexander× Danielson, Eric× Nordlund, Kai× Djurabekova, Flyura× Sowwan, Mukhles |
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書誌情報 |
en : Chemistry of Materials 巻 31, 号 6, p. 2151-2163, 発行日 2019-03-06 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | To this day, engineering nanoalloys beyond bimetallic compositions has scarcely been within the scope of physical deposition methods due to the complex, nonequilibrium processes they entail. Here, we report a gas-phase synthesis strategy for the growth of multimetallic nanoparticles: magnetron-sputtering inert-gas condensation from neighboring monoelemental targets provides the necessary compositional flexibility, whereas in-depth atomistic computer simulations elucidate the fast kinetics of nucleation and growth that determines the resultant structures. We fabricated consistently trimetallic Au–Pt–Pd nanoparticles, a system of major importance for heterogeneous catalysis applications. Using high-resolution transmission electron microscopy, we established their physical and chemical ordering: Au/Pt-rich core@Pd-shell atomic arrangements were identified for particles containing substantial amounts of all elements. Decomposing the growth process into basic steps by molecular dynamics simulations, we identified a fundamental difference between Au/Pt and Pd growth dynamics: Au/Pt electronic arrangements favor the formation of dimer nuclei instead of larger-size clusters, thus significantly slowing down their growth rate. Consequently, larger Pd particles formed considerably faster and incorporated small Au and Pt clusters by means of in-flight decoration and coalescence. A broad range of icosahedral, truncated-octahedral, and spheroidal face-centered cubic trimetallic nanoparticles were reproduced in simulations, in good agreement with experimental particles. Comparing them with their expected equilibrium structures obtained by Monte Carlo simulations, we identified the particles as metastable, due to out-of-equilibrium growth conditions. We aspire that our in-depth study will constitute a significant advance toward establishing gas-phase aggregation as a standard method for the fabrication of complex nanoparticles by design. | |||||
出版者 | ||||||
出版者 | American Chemical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0897-4756 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1520-5002 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1021/acs.chemmater.9b00129 | |||||
権利 | ||||||
権利情報 | © 2019 American Chemical Society | |||||
情報源 | ||||||
関連名称 | https://pubs.acs.org/page/policy/authorchoice_termsofuse.html | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://pubs.acs.org/doi/10.1021/acs.chemmater.9b00129 | |||||
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 |