Germanium nanoclusters: Chemical vapor deposition of digermane in zeolite Y and mordenite

Authors

  • Dr. ÖMer Dag,

    1. Department of Chemistry, Middle East Technical University 06531 Ankara (Turkey)
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  • Prof. Alex Kuperman,

    1. Advanced Zeolite Materials Research Group Lash Miller Chemical Laboratories, University of Toronto 80 St. George Street, Toronto, Ontario M5S 1A1 (Canada)
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  • Dr. Geoffrey A. Ozin

    Corresponding author
    1. Advanced Zeolite Materials Research Group Lash Miller Chemical Laboratories, University of Toronto 80 St. George Street, Toronto, Ontario M5S 1A1 (Canada)
    • Advanced Zeolite Materials Research Group Lash Miller Chemical Laboratories, University of Toronto 80 St. George Street, Toronto, Ontario M5S 1A1 (Canada)
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  • The financial support of the Natural Sciences and Engineering Research Council of Canada, and the Dow Chemical Company, Midland, Michigan, is greatly appreciated. The EXAFS measurements were carried out at the National Synchrotron Light Source, Brookhaven National Laboratories, which is supported by the US Department of Energy, Division of Material Sciences and the Division of Chemical Sciences. Ö. D. gratefully acknowledges the Scientific and Technical Research Council of Turkey for a graduate scholarship and the Chemistry Department, Middle East Technical University, Ankara, Turkey, for permission to conduct his graduate research at the University of Toronto. We also acknowledge Dr. Neil Coombs and Dr. Rana N. S. Sodhi for technical assistance with SEMEDX and XPS measurements. Discussions with our colleagues at the University of Toronto also proved to be invaluable.

Abstract

Uniform arrays of intrazeolite germanium nanoclusters have been produced by the topotactic chemical vapor deposition of digermane within the diamond network of α-cages of acid zeolite Y and the main channel of mordenite. The conditions within the zeolite hosts enusure that the Ge2H6 CVD-type anchored precursors self-assemble to produce the anchored (Ge8)n nanoclusters shown in the Figure.

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