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 succ...
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| Published in: | The journal of physical chemistry. B Vol. 108; no. 15; pp. 4590 - 4592 |
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| Main Authors: | , , , , , , |
| Format: | Journal Article |
| Language: | English |
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American Chemical Society
15-04-2004
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| 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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| AbstractList | 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. |
| Author | Thomas, John Meurig Raja, Robert Johnson, Brian F. G Midgley, Paul A Weyland, Matthew Laffont, Lydia Khimyak, Tanya |
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| Cites_doi | 10.1039/b101819c 10.1007/978-1-4757-2163-8_2 10.1016/0304-3991(89)90173-3 10.1002/1521-3765(20010716)7:14<2972::AID-CHEM2972>3.0.CO;2-Z 10.1016/S0304-3991(03)00105-0 10.1039/b300203a 10.1021/ar990017q 10.1126/science.1076184 10.1351/pac200173071087 10.1111/j.1365-2818.1975.tb03895.x 10.1126/science.159.3822.1464 10.1038/nature01009 10.1111/j.1365-2818.1979.tb00228.x 10.1016/S0304-3991(03)00090-1 10.1073/pnas.051631998 10.1002/1439-7641(20020916)3:9<776::AID-CPHC776>3.0.CO;2-E |
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| Title | High-Resolution Scanning Transmission Electron Tomography and Elemental Analysis of Zeptogram Quantities of Heterogeneous Catalyst |
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