Title
Three-dimensional transmission electron microscopy of disordered and ordered mesoporous materials Three-dimensional transmission electron microscopy of disordered and ordered mesoporous materials
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Source (journal)
Studies in surface science and catalysis. - Amsterdam
Source (book)
3rd International Mesostructured Materials Symposium, JUL 08-11, 2002, JEJU ISL, SOUTH KOREA
Volume/pages
146(2003) , p. 271-274
ISBN
0-444-51434-1
ISI
000184568300064
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
The use of 3D-TEM, in particular electron tomography, for the characterisation of mesoporous materials is introduced. In 3D-TEM a tilt series of the specimen collected in bright field mode comprises typically 150 images over tilt angles ranging from -70degrees to +70degrees. The tilt series are used to calculate a full 3D- image reconstruction of the specimen in question. The first example delt with comprises the study of zeolite Y crystals that contain mesopores. The pore shape, size and connectivity of the zeolite Y crystal is obtained with great clarity and detail. The second example involves SBA-15 materials. The curved nature of the pores in the particles of SBA-15 is clearly demonstrated from tilt series.
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