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Localization of small metal (oxide) particles in SBA-15 using bright-field electron tomography

被引：104
作者：
Janssen, AH
Yang, CM
Wang, Y
Schüth, F
Koster, AJ
de Jong, KP
机构：
[1] Univ Utrecht, Debye Inst, Dept Inorgan Chem & Catalysis, NL-3584 CA Utrecht, Netherlands
[2] Max Planck Inst Kohlenforsch, D-45470 Mulheim, Germany
[3] Univ Utrecht, Dept Cellbiol, NL-3584 CH Utrecht, Netherlands
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2003年 / 107卷 / 38期
关键词：
D O I：
10.1021/jp034750h
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Small gold (5 nm) and zirconia (2-3 nm) particles inside the mesopores of SBA-15 were visualized with bright-field electron tomography. Due to the ordered nature of the mesopores and the related diffraction contrast present in the tilt series, the 3D-reconstruction is difficult to interpret. Unequivocal information has been obtained, however, on the presence of the particles in certain pores, while others pores are empty. This nonuniform distribution of particles over the mesopores explains the two-step desorption isotherm in nitrogen physisorption experiments.
引用
收藏
页码：10552 / 10556
页数：5
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