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  Quantitative High-Angle Annular Dark-Field Scanning Transmission Electron Microscope (HAAF-STEM)Tomography and High Resolution Electron Microscopy of Unsupported Intermetallic GaPd2 Catalysts

Leary, R., Saghi, Z., Armbrüster, M., Wowsnick, G., Schlögl, R., Thomas, J. M., et al. (2012). Quantitative High-Angle Annular Dark-Field Scanning Transmission Electron Microscope (HAAF-STEM)Tomography and High Resolution Electron Microscopy of Unsupported Intermetallic GaPd2 Catalysts. The Journal of Physical Chemistry C, 116(24), 13343-13352. doi:10.1021/jp212456z.

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 Urheber:
Leary, Rowen1, Autor
Saghi, Zineb1, Autor
Armbrüster, Marc2, Autor
Wowsnick, Gregor2, Autor
Schlögl, Robert3, Autor           
Thomas, John Meurig1, Autor
Midgley, Paul1, Autor
Affiliations:
1Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, United Kingdom, ou_persistent22              
2Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Strasse 40, 01187 Dresden, Germany, ou_persistent22              
3Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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 Zusammenfassung: Apart from describing the occurrence and detailed crystallographic nature of novel five-fold twinned nanoparticles (<5 nm) of the selective hydrogenation catalyst GaPd2, the main thrust of this work is to demonstrate a method of characterizing, by electron tomography, the structural morphologies of large agglomerates, consisting of ca. 1800 nanoparticles, the individual sizes of which fall in the range of 1–30 nm in equivalent diameter. The so-called segmentation of electron tomograms, usually evaluated manually and vulnerable to subjective bias (as well as being laborious) is carried out by utilizing sophisticated, yet readily implementable, image processing techniques that facilitate versatile 3D nanometrological analysis. Such procedures will play an important role in the move toward quantitative 3D characterization at the nanoscale and are applicable to numerous other systems of technological and catalytic interest (such as fuel-cell electrodes) where there are agglomerates of nanoparticles and nanoclusters of various compositions, including those that are supported on high-surface-area solids.

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Sprache(n): eng - English
 Datum: 2012-04-262012-05-222012-06-21
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/jp212456z
 Art des Abschluß: -

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Titel: The Journal of Physical Chemistry C
  Andere : J. Phys. Chem. C
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington DC : American Chemical Society
Seiten: - Band / Heft: 116 (24) Artikelnummer: - Start- / Endseite: 13343 - 13352 Identifikator: ISSN: 1932-7447
CoNE: https://pure.mpg.de/cone/journals/resource/954926947766