TY - GEN
T1 - SINGLE-PARTICLE DIFFRACTION, WEAK-BEAM DARK-FIELD, AND TOPOGRAPHIC IMAGES OF SMALL METALLIC PARTICLES IN SUPPORTED CATALYSTS.
AU - Yacaman, M. J.
PY - 1984
Y1 - 1984
N2 - Non-conventional TEM methods to characterize small metallic particles are presented. The topographic information on the particle's shape can be combined with micro-diffraction (using STEM) data to obtain a full characterization of the particle. The case of gold particles evaporated on a NaCl substrate is used as example. The particle shapes observed are discussed. It is shown that many particles have a crystal structure which is different from the bulk (Fcc). The results are extended for the case of the Pt/Graphite supported catalysts. Finally, it is shown that, by using refraction topographic images, rough supports can also be studied. 17 refs.
AB - Non-conventional TEM methods to characterize small metallic particles are presented. The topographic information on the particle's shape can be combined with micro-diffraction (using STEM) data to obtain a full characterization of the particle. The case of gold particles evaporated on a NaCl substrate is used as example. The particle shapes observed are discussed. It is shown that many particles have a crystal structure which is different from the bulk (Fcc). The results are extended for the case of the Pt/Graphite supported catalysts. Finally, it is shown that, by using refraction topographic images, rough supports can also be studied. 17 refs.
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U2 - 10.1021/bk-1984-0248.ch016
DO - 10.1021/bk-1984-0248.ch016
M3 - Conference contribution
AN - SCOPUS:0021613345
SN - 084120831X
SN - 9780841208315
T3 - ACS Symposium Series
SP - 335
EP - 352
BT - ACS Symposium Series
PB - ACS
ER -