Quantitative three-dimensional modeling of zeotile through discrete electron tomography
Discrete electron tomography is a new approach for three-dimensional reconstruction of nanoscale objects. The technique exploits prior knowledge of the object to be reconstructed, which results in an improvement of the quality of the reconstructions. Through the combination of conventional transmiss...
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| Vydané v: | Journal of the American Chemical Society Ročník 131; číslo 13; s. 4769 |
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| Hlavní autori: | , , , , , , , |
| Médium: | Journal Article |
| Jazyk: | English |
| Vydavateľské údaje: |
United States
08.04.2009
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| ISSN: | 1520-5126, 1520-5126 |
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| Abstract | Discrete electron tomography is a new approach for three-dimensional reconstruction of nanoscale objects. The technique exploits prior knowledge of the object to be reconstructed, which results in an improvement of the quality of the reconstructions. Through the combination of conventional transmission electron microscopy and discrete electron tomography with a model-based approach, quantitative structure determination becomes possible. In the present work, this approach is used to unravel the building scheme of Zeotile-4, a silica material with two levels of structural order. The layer sequence of slab-shaped building units could be identified. Successive layers were found to be related by a rotation of 120 degrees, resulting in a hexagonal space group. The Zeotile-4 material is a demonstration of the concept of successive structuring of silica at two levels. At the first level, the colloid chemical properties of Silicalite-1 precursors are exploited to create building units with a slablike geometry. At the second level, the slablike units are tiled using a triblock copolymer to serve as a mesoscale structuring agent. |
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| AbstractList | Discrete electron tomography is a new approach for three-dimensional reconstruction of nanoscale objects. The technique exploits prior knowledge of the object to be reconstructed, which results in an improvement of the quality of the reconstructions. Through the combination of conventional transmission electron microscopy and discrete electron tomography with a model-based approach, quantitative structure determination becomes possible. In the present work, this approach is used to unravel the building scheme of Zeotile-4, a silica material with two levels of structural order. The layer sequence of slab-shaped building units could be identified. Successive layers were found to be related by a rotation of 120 degrees, resulting in a hexagonal space group. The Zeotile-4 material is a demonstration of the concept of successive structuring of silica at two levels. At the first level, the colloid chemical properties of Silicalite-1 precursors are exploited to create building units with a slablike geometry. At the second level, the slablike units are tiled using a triblock copolymer to serve as a mesoscale structuring agent. Discrete electron tomography is a new approach for three-dimensional reconstruction of nanoscale objects. The technique exploits prior knowledge of the object to be reconstructed, which results in an improvement of the quality of the reconstructions. Through the combination of conventional transmission electron microscopy and discrete electron tomography with a model-based approach, quantitative structure determination becomes possible. In the present work, this approach is used to unravel the building scheme of Zeotile-4, a silica material with two levels of structural order. The layer sequence of slab-shaped building units could be identified. Successive layers were found to be related by a rotation of 120 degrees, resulting in a hexagonal space group. The Zeotile-4 material is a demonstration of the concept of successive structuring of silica at two levels. At the first level, the colloid chemical properties of Silicalite-1 precursors are exploited to create building units with a slablike geometry. At the second level, the slablike units are tiled using a triblock copolymer to serve as a mesoscale structuring agent.Discrete electron tomography is a new approach for three-dimensional reconstruction of nanoscale objects. The technique exploits prior knowledge of the object to be reconstructed, which results in an improvement of the quality of the reconstructions. Through the combination of conventional transmission electron microscopy and discrete electron tomography with a model-based approach, quantitative structure determination becomes possible. In the present work, this approach is used to unravel the building scheme of Zeotile-4, a silica material with two levels of structural order. The layer sequence of slab-shaped building units could be identified. Successive layers were found to be related by a rotation of 120 degrees, resulting in a hexagonal space group. The Zeotile-4 material is a demonstration of the concept of successive structuring of silica at two levels. At the first level, the colloid chemical properties of Silicalite-1 precursors are exploited to create building units with a slablike geometry. At the second level, the slablike units are tiled using a triblock copolymer to serve as a mesoscale structuring agent. |
| Author | Batenburg, K Joost Liang, Duoduo Van Tendeloo, Gustaaf Martens, Johan A Lebedev, Oleg Kirschhock, Christine E A Aerts, Alexander Bals, Sara |
| Author_xml | – sequence: 1 givenname: Sara surname: Bals fullname: Bals, Sara email: Sara.Bals@ua.ac.be organization: EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium. Sara.Bals@ua.ac.be – sequence: 2 givenname: K Joost surname: Batenburg fullname: Batenburg, K Joost – sequence: 3 givenname: Duoduo surname: Liang fullname: Liang, Duoduo – sequence: 4 givenname: Oleg surname: Lebedev fullname: Lebedev, Oleg – sequence: 5 givenname: Gustaaf surname: Van Tendeloo fullname: Van Tendeloo, Gustaaf – sequence: 6 givenname: Alexander surname: Aerts fullname: Aerts, Alexander – sequence: 7 givenname: Johan A surname: Martens fullname: Martens, Johan A – sequence: 8 givenname: Christine E A surname: Kirschhock fullname: Kirschhock, Christine E A |
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| SubjectTerms | Electron Microscope Tomography - methods Imaging, Three-Dimensional - methods Microscopy, Electron, Transmission Models, Molecular Molecular Conformation Zeolites - chemical synthesis Zeolites - chemistry |
| Title | Quantitative three-dimensional modeling of zeotile through discrete electron tomography |
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