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2015 | 2 | 1 |

Article title

In situ time-resolved HEROS study of Pt electronic
structure during regenerative H2-O2 cycles



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We report an in situ time-resolved high-energy
resolution off-resonant spectroscopy (HEROS) study with
unprecedented 100 ms time resolution revealing the
unoccupied electronic states of platinum during regenerative
oxidation and reduction cycles. The study depicted a
slowed oxidation step in comparison with reduction. The
oxidation cycle is composed of two characteristic stages,
namely adsorption of dissociated oxygen followed by partial
oxidation of Pt subsurface. Besides improved temporal
resolution of the experiment, the detected reduction process
of platinum showed no intermediate features and was
completed in a single step within a few seconds.







Physical description


17 - 4 - 2015
23 - 3 - 2015
27 - 2 - 2015


  • Institute of Physical Chemistry,
    Polish Academy of Sciences, Warsaw, Poland; Ångstrom Laboratory,
    Department of Chemistry, Uppsala University, Uppsala, Sweden


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