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@ARTICLE{Gan:188154,
      author       = {Gan, L. and Cui, C. and Heggen, M. and Dionigi, F. and
                      Rudi, S. and Strasser, P.},
      title        = {{E}lement-specific anisotropic growth of shaped platinum
                      alloy nanocrystals},
      journal      = {Science},
      volume       = {346},
      number       = {6216},
      issn         = {1095-9203},
      address      = {Washington, DC [u.a.]},
      publisher    = {American Association for the Advancement of Science64196},
      reportid     = {FZJ-2015-01615},
      pages        = {1502 - 1506},
      year         = {2014},
      abstract     = {Morphological shape in chemistry and biology owes its
                      existence to anisotropic growth and is closely coupled to
                      distinct functionality. Although much is known about the
                      principal growth mechanisms of monometallic shaped
                      nanocrystals, the anisotropic growth of shaped alloy
                      nanocrystals is still poorly understood. Using
                      aberration-corrected scanning transmission electron
                      microscopy, we reveal an element-specific anisotropic growth
                      mechanism of platinum (Pt) bimetallic nano-octahedra where
                      compositional anisotropy couples to geometric anisotropy. A
                      Pt-rich phase evolves into precursor nanohexapods, followed
                      by a slower step-induced deposition of an M-rich (M = Ni,
                      Co, etc.) phase at the concave hexapod surface forming the
                      octahedral facets. Our finding explains earlier reports on
                      unusual compositional segregations and chemical degradation
                      pathways of bimetallic polyhedral catalysts and may aid
                      rational synthesis of shaped alloy catalysts with desired
                      compositional patterns and properties.},
      cin          = {PGI-5},
      ddc          = {500},
      cid          = {I:(DE-Juel1)PGI-5-20110106},
      pnm          = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
      pid          = {G:(DE-HGF)POF2-42G41},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000346536500061},
      pubmed       = {pmid:25525243},
      doi          = {10.1126/science.1261212},
      url          = {https://juser.fz-juelich.de/record/188154},
}