High-resolution scanning transmission electron tomography and elemental analysis of zeptogram quantities of heterogeneous catalyst
High-resolution scanning transmission electron tomography and elemental analysis of zeptogram quantities of heterogeneous catalyst
The ability to visualize the three-dimensional structure of an object is of central importance in many branches of science and engineering. Recording an angular series of two-dimensional projections (images) and subsequently applying tomographic reconstruction methods has proven to be extremely successful at many lengthscales. Using scanning transmission electron microscopy (STEM) high angle annular dark field (HAADF) imaging, we describe how the three-dimensional distribution of bimetallic nanocatalysts (such as Ru10Pt2, diameter ~1 nm, mass 10-21 g) within mesoporous hosts may be precisely determined. Moreover, the simultaneous retrieval of the elemental composition (from electron-stimulated X-ray emission spectra) of individual catalytic nanoparticles was achieved.
microscopy, z-contrast
4590-4592
Midgley, P.A.
bc0a0a3f-0546-4e00-b3f5-7736b35b69f2
Thomas, J.M.
98879775-7bc8-4aeb-89c1-da6c60c856c2
Laffont, L.M.
38633fd3-1ddb-45c0-a157-f0c4f0b7e563
Raja, R.
74faf442-38a6-4ac1-84f9-b3c039cb392b
Johnson, B.F.G.
6cabbb08-15ee-45d7-b085-edb99a3d1133
Khimyak, T.
b9689188-d41a-442c-8c49-5f2b588e266b
2004
Midgley, P.A.
bc0a0a3f-0546-4e00-b3f5-7736b35b69f2
Thomas, J.M.
98879775-7bc8-4aeb-89c1-da6c60c856c2
Laffont, L.M.
38633fd3-1ddb-45c0-a157-f0c4f0b7e563
Raja, R.
74faf442-38a6-4ac1-84f9-b3c039cb392b
Johnson, B.F.G.
6cabbb08-15ee-45d7-b085-edb99a3d1133
Khimyak, T.
b9689188-d41a-442c-8c49-5f2b588e266b
Midgley, P.A., Thomas, J.M., Laffont, L.M., Raja, R., Johnson, B.F.G. and Khimyak, T.
(2004)
High-resolution scanning transmission electron tomography and elemental analysis of zeptogram quantities of heterogeneous catalyst.
The Journal of Physical Chemistry B, 108 (15), .
(doi:10.1021/jp049750b).
Abstract
The ability to visualize the three-dimensional structure of an object is of central importance in many branches of science and engineering. Recording an angular series of two-dimensional projections (images) and subsequently applying tomographic reconstruction methods has proven to be extremely successful at many lengthscales. Using scanning transmission electron microscopy (STEM) high angle annular dark field (HAADF) imaging, we describe how the three-dimensional distribution of bimetallic nanocatalysts (such as Ru10Pt2, diameter ~1 nm, mass 10-21 g) within mesoporous hosts may be precisely determined. Moreover, the simultaneous retrieval of the elemental composition (from electron-stimulated X-ray emission spectra) of individual catalytic nanoparticles was achieved.
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Published date: 2004
Keywords:
microscopy, z-contrast
Identifiers
Local EPrints ID: 54186
URI: http://eprints.soton.ac.uk/id/eprint/54186
ISSN: 1520-5207
PURE UUID: 0c855140-1227-41ca-b945-86e294c763ba
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Date deposited: 31 Jul 2008
Last modified: 16 Mar 2024 03:51
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Contributors
Author:
P.A. Midgley
Author:
J.M. Thomas
Author:
L.M. Laffont
Author:
B.F.G. Johnson
Author:
T. Khimyak
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