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Noncrystalline-to-Crystalline Transformations in Pt Nanoparticles

TitleNoncrystalline-to-Crystalline Transformations in Pt Nanoparticles
Publication TypeJournal Article
Year of Publication2013
AuthorsLi, L, Wang, LL, Johnson, DD, Zhang, ZF, Sanchez, SI, Kang, JH, Nuzzo, RG, Wang, Q, Frenkel, AI, Li, J, Ciston, J, Stach, EA, Yang, JC
JournalJournal of the American Chemical Society
Date Published09
Type of ArticleArticle
ISBN Number0002-7863
Accession NumberWOS:000330163100028
Keywordsclusters, core-shell nanoparticles, disorder, in-situ, metal, nanoparticles, oxidation, platinum, shape changes, small particles, transmission electron-microscopy

3000 particles by high-resolution transmission electron microscopy show a noncrystalline-to-crystalline transition zone that is nonabrupt; there is a size regime where disordered and ordered NPs coexist. The NP size at which this transition occurs is strongly dependent on both the adsorbate and the support, and this effect is general for late 5d transition metals. All results are reconciled via a statistical description of particle-support-adsorbate interactions.

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