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Title
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Silver Ions Direct Twin-Plane Formation during the Overgrowth of Single-Crystal Gold Nanoparticles
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Author
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Abstract
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| It is commonly agreed that the crystalline structure of seeds dictates the crystallinity of final nanoparticles in a seeded-growth process. Although the formation of monocrystalline particles does require the use of single-crystal seeds, twin planes may stem from either single-or polycrystalline seeds. However, experimental control over twin-plane formation remains difficult to achieve synthetically. Here, we show that a careful interplay between kinetics and selective surface passivation offers a unique handle over the emergence of twin planes (in decahedra and triangles) during the growth over single-crystalline gold nanoparticles of quasi-spherical shape. Twinning can be suppressed under conditions of slow kinetics in the presence of silver ions, yielding single-crystalline particles with high-index facets. |
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Language
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English
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Source (journal)
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ACS Omega
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Publication
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American Chemical Society
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2016
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ISSN
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2470-1343
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DOI
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10.1021/ACSOMEGA.6B00066
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Volume/pages
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1
:2
(2016)
, p. 177-181
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ISI
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000391203300002
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Pubmed ID
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27656688
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Full text (Publisher's DOI)
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Full text (open access)
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