دورية أكاديمية
Tailoring Morphology of Cu-Ag Nanocrescents and Core-Shell Nanocrystals Guided by a Thermodynamic Model.
| العنوان: | Tailoring Morphology of Cu-Ag Nanocrescents and Core-Shell Nanocrystals Guided by a Thermodynamic Model. |
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| المؤلفون: | Osowiecki WT; Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.; Department of Chemistry , University of California , Berkeley , California 94720 , United States., Ye X; Department of Chemistry , University of California , Berkeley , California 94720 , United States., Satish P; Department of Chemistry , University of California , Berkeley , California 94720 , United States., Bustillo KC; National Center for Electron Microscopy, Molecular Foundry , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States., Clark EL; Joint Center for Artificial Photosynthesis , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.; Department of Chemical and Biomolecular Engineering , University of California , Berkeley , California 94720 , United States., Alivisatos AP; Materials Sciences Division , Lawrence Berkeley National Laboratory , Berkeley , California 94720 , United States.; Department of Chemistry , University of California , Berkeley , California 94720 , United States.; Department of Materials Science and Engineering , University of California , Berkeley , California 94720 , United States.; Kavli Energy NanoScience Institute , Berkeley , California 94720 , United States. |
| المصدر: | Journal of the American Chemical Society [J Am Chem Soc] 2018 Jul 11; Vol. 140 (27), pp. 8569-8577. Date of Electronic Publication: 2018 Jun 29. |
| نوع المنشور: | Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Chemical Society Country of Publication: United States NLM ID: 7503056 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1520-5126 (Electronic) Linking ISSN: 00027863 NLM ISO Abbreviation: J Am Chem Soc Subsets: PubMed not MEDLINE |
| أسماء مطبوعة: | Publication: Washington, DC : American Chemical Society Original Publication: Easton, Pa. [etc.] |
| مستخلص: | The ability to predict and control the formation of bimetallic heterogeneous nanocrystals is desirable for many applications in plasmonics and catalysis. Here, we report the synthesis and characterization of stable, monodisperse, and solution-processed Cu-Ag bimetallic nanoparticles with specific but unusual elemental arrangements that are consistent with a recently developed thermodynamic model. Using air-free scanning transmission electron microscopy with energy-dispersive X-ray spectroscopy, the distribution of Cu and Ag positions was unambiguously identified within individual nanocrystals (NCs), leading to the discovery of a Cu-Ag nanocrescent shape. A simple yet versatile thermodynamic model was applied to illustrate how the interplay between surface and interface energies determines the particle morphology. It is found that there exists a range of surface-to-interface energy ratios under which crescent-shaped nanocrystals are the thermodynamically favored products, with the morphology tunable by adjusting the Ag content. We further show the conversion of Cu-Ag nanocrescents into Ag@Cu |
| تواريخ الأحداث: | Date Created: 20180619 Latest Revision: 20191120 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1021/jacs.8b04558 |
| PMID: | 29909616 |
| قاعدة البيانات: | MEDLINE |
Find this issue from the American Chemical Society | تدمد: | 1520-5126 |
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| DOI: | 10.1021/jacs.8b04558 |