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@ARTICLE{Ducho:873927,
      author       = {Duchoň, Tomáš and Hackl, Johanna and Mueller, David N.
                      and Kullgren, Jolla and Du, Dou and Senanayake, Sanjaya D.
                      and Mouls, Caroline and Gottlob, Daniel M. and Khan,
                      Muhammad I. and Cramm, Stefan and Veltruská, Kateřina and
                      Matolín, Vladimír and Nemšák, Slavomír and Schneider,
                      Claus M.},
      title        = {{E}stablishing structure-sensitivity of ceria reducibility:
                      real-time observations of surface-hydrogen interactions},
      journal      = {Journal of materials chemistry / A Materials for energy and
                      sustainability A},
      volume       = {8},
      number       = {11},
      issn         = {2050-7496},
      address      = {London [u.a.]},
      publisher    = {RSC},
      reportid     = {FZJ-2020-01101},
      pages        = {5501-5507},
      year         = {2020},
      abstract     = {The first layer of atoms on an oxide catalyst provides the
                      first sites for adsorption of reactants and the last sites
                      before products or oxygen are desorbed. We employ a unique
                      combination of morphological, structural, and chemical
                      analyses of a model ceria catalyst with different surface
                      terminations under an H2 environment to unequivocally
                      establish the effect of the last layer of atoms on surface
                      reduction. (111) and (100) terminated epitaxial islands of
                      ceria are simultaneously studied in situ allowing for a
                      direct investigation of the structure–reducibility
                      relationship under identical conditions. Kinetic rate
                      constants of Ce4+ to Ce3+ transformation and equilibrium
                      concentrations are extracted for both surface terminations.
                      Unlike the kinetic rate constants, which are practically the
                      same for both types of islands, more pronounced oxygen
                      release, and overall higher reducibility were observed for
                      (100) islands compared to (111) ones. The findings are in
                      agreement with coordination-limited oxygen vacancy formation
                      energies calculated by density functional theory. The
                      results point out the important aspect of surface
                      terminations in redox processes, with particular impact on
                      the catalytic reactions of a variety of catalysts.},
      cin          = {PGI-6},
      ddc          = {530},
      cid          = {I:(DE-Juel1)PGI-6-20110106},
      pnm          = {522 - Controlling Spin-Based Phenomena (POF3-522)},
      pid          = {G:(DE-HGF)POF3-522},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000521109000036},
      doi          = {10.1039/C9TA11784A},
      url          = {https://juser.fz-juelich.de/record/873927},
}