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Probing a redox behavior of TiO/SBA-15 Supported V O catalyst using an electron beam in a 200 kv transmission electron microscope

Journal of Physical Chemistry C, ISSN: 1932-7447, Vol: 115, Issue: 42, Page: 20550-20554
2011
  • 13
    Citations
  • 0
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  • 23
    Captures
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    13
    • Citation Indexes
      13
  • Captures
    23

Article Description

Supported vanadium oxides are becoming the model catalysts for numerous selective oxidation reactions. To exploit redox chemistry of well-known titania-supported vanadia is currently one of the most fascinating topics. Herein, by applying in situ electron energy-loss spectroscopy, we succeeded in stimulating a new redox reaction in a routine transmission electron microscope; the electron beam can boost further oxidation from an amorphous lower-oxidation-state vanadia to maximal VO with an expense of oxygen from its support of TiO to be reduced. Our findings could be extended into a new strategy: through utilizing an electron beam, and probing the redox chemistry between catalysts and their support in a wide class of heterogeneous catalyst systems, such as various oxide/oxide, metal/oxide, and oxide/metal catalysts. © 2011 American Chemical Society.

Bibliographic Details

Wei Zhang; Bingsen Zhang; Till Wolfram; Lidong Shao; Robert Schlögl; Dang Sheng Su

American Chemical Society (ACS)

Materials Science; Energy; Chemistry

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