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Observation of surface atoms during platinum nanocrystal growth by monomer attachment

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Title
Observation of surface atoms during platinum nanocrystal growth by monomer attachment
Author(s)
Myoungho Jeong; Jong Min Yuk; Jeong Yong Lee
Publication Date
2015-05
Journal
CHEMISTRY OF MATERIALS, v.27, no.9, pp.3200 - 3202
Publisher
AMER CHEMICAL SOC
Abstract
Surface atoms were observed during Pt nanocrystal growth by attachments of monomers using in situ graphene liquid cell electron microscopy (GLC-EM). First, GLC encapsulating dilute Pt precursors were fabricated, which increase the diffusion length of monomers arriving at the nanocrystal surfaces and slow the atomic diffusion time following Fick's law. Two intact graphene sheets are bonded via van der Waals attraction where the Pt growth solution were removed and the remaining solution is entrapped and protected against evaporation of solution in the TEM with high vacuum. These facets are formed through the ledge-by-ledge growth. During ledge growth, stacking faults can be formed but are annealed with nanocrystal growth. After growth, imperfect {100} or {111} ledges are stabilized during structural relaxation
URI
https://pr.ibs.re.kr/handle/8788114/1761
ISSN
0897-4756
Appears in Collections:
Center for Nanomaterials and Chemical Reactions(나노물질 및 화학반응 연구단) > Journal Papers (저널논문)
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