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Structure study of the tri-continuous mesoporous silica IBN-9 by electron crystallography
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK), Inorganic and Structural Chemistry.
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK), Inorganic and Structural Chemistry.
King Abdullah Univ Sci & Technol, Adv Membranes & Porous Mat Ctr, Thuwal 239556900, Saudi Arabia.
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK), Inorganic and Structural Chemistry.
2011 (English)In: Microporous and Mesoporous Materials, ISSN 1387-1811, E-ISSN 1873-3093, Vol. 146, no 1-3, 88-96 p.Article in journal (Refereed) Published
Abstract [en]

High resolution electron microscopy (HRTEM) has unique advantages for structural determination of nano-sized porous materials compared to X-ray diffraction, because it provides the important structure factor phase information which is lost in diffraction. Here we demonstrate the structure determination of the first tri-continuous mesoporous silica IBN-9 by electron crystallography. IBN-9 has a hexagonal unit cell with the space group P6(3)/mcm and a = 88.4 angstrom, c= 84.3 angstrom. HRTEM images taken along three main directions, [00 1], [1 (1) over bar 0] and [1 00] were combined to reconstruct the 3D electrostatic potential map, from which the tri-continuous pore structure of IBN-9 was discovered. The different steps of structure determination of unknown mesoporous structures by electron crystallography are described in details. Similar procedures can also be applied for structure determination of other porous and nonporous crystalline materials.

Place, publisher, year, edition, pages
2011. Vol. 146, no 1-3, 88-96 p.
Keyword [en]
Mesoporous materials, Structure determination, Transmission electron microscopy, Electron crystallography, Space group determination
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:su:diva-69886DOI: 10.1016/j.micromeso.2011.05.026ISI: 000295769400012OAI: oai:DiVA.org:su-69886DiVA: diva2:479766
Note
4Available from: 2012-01-18 Created: 2012-01-15 Last updated: 2017-12-08Bibliographically approved

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