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A Joint Structural Characterization of Colloidal Platinum by EXAFS and High‐Resolution Electron Microscopy
Author(s) -
Duff Daniel G.,
Edwards Peter P.,
Evans John,
Gauntlett J. Trevor,
Jefferson David A.,
Johnson Brian F. G.,
Kirkland Angus I.,
Smith David J.
Publication year - 1989
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198905901
Subject(s) - extended x ray absorption fine structure , colloid , materials science , electron microscope , lattice constant , crystallography , lattice (music) , transition metal , colloidal crystal , crystal structure , microscopy , chemical physics , chemistry , optics , diffraction , absorption spectroscopy , physics , catalysis , biochemistry , acoustics
The accurate determination of lattice parameters of small colloidal Pt particles in solution can be accomplished by EXAFS analysis. Thus, it could be demonstrated that a lattice contraction (0.4 %) takes place in the transition from the metal to the colloidal state. The results of the EXAFS investigations supplement those obtained by high‐resolution electron microscopy (HREM). The diagram on the right shows a typical HREM photograph of a colloid particle with perfect cubic face centered lattice.