Structure determination of zeolite nanosheets
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Structure determination of zeolite nanosheets
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2012
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MFI and MWW zeolite nanosheets are building units for state-of-the-art zeolite thin films for gas separation. In this study, the structures of exfoliated MFI and MWW zeolite nanosheets were determined using a combination of experimental and simulation methods. Based on characterization results from atomic force microscopy and transmission electron microscopy, the structures and thicknesses of the exfoliated zeolite nanosheets were proposed. After optimization with Car-Parrinello molecular dynamics, X-ray diffraction patterns and electron diffraction patterns are simulated from these structures. The agreement between experimental and simulated characterization data suggested that the proposed structures should represent the actual structures of the exfoliated zeolite nanosheets. The methods used in this study can be extended to determining structures of other zeolite nanostructures.
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Acknowledgements: U.S. Department of Energy, ADMIRE (Abu Dhabi-Minnesota Institute for Research Excellence), National Science Foundation (NSF-NIRT CMMI 0707610), University of Minnesota Institute of Technology Characterization Facility (receives partial support from the NSF through the NNIN program), Minnesota Supercomputing Institute.
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Zhang, Xueyi; Tsapatsis, Michael. (2012). Structure determination of zeolite nanosheets. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/123377.
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