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@ARTICLE{Dolling:616571,
      author       = {Dolling, Silvan and chen, jiachen and Schober,
                      Jan-Christian and Creutzburg, Marcus and Jeromin, Arno and
                      Vonk, Vedran and Sharapa, Dmitry I. and Keller, Thomas F.
                      and Plessow, Philipp N. and Noei, Heshmat and Stierle,
                      Andreas},
      title        = {{P}robing active sites on {P}d/{P}t alloy nanoparticles by
                      {CO} adsorption},
      journal      = {ACS nano},
      volume       = {18},
      number       = {45},
      issn         = {1936-0851},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {PUBDB-2024-06483},
      pages        = {31098-31108},
      year         = {2024},
      abstract     = {We studied the adsorption of CO on Pd/Pt nanoparticles
                      (NPs) with varying com-positions using
                      polarization-dependent Fourier transform infrared reflection
                      absorptionspectroscopy (FT-IRRAS) and theoretical
                      calculations (DFT). We prepared PtPd al-loy nanoparticles
                      via physical vapor co-deposition on α-Al$_2$O$_3$(0001)
                      supports. Ourmorphological and structural characterization
                      by scanning electron microscopy andgrazing incidence x-ray
                      diffraction revealed well-defined, epitaxial nanoparticles.
                      Weused CO as a probe molecule to identify the particles’
                      surface active sites. Polarization-dependent FT-IRRAS
                      enabled us to distinguish CO adsorption on top and side
                      facets ofthe NPs. The role of the Pd/Pt alloy ratio on CO
                      adsorption was investigated by com-paring the experimental
                      CO stretching band frequency for different alloy
                      arrangementsto the results for pure Pd and Pt nanoparticles.
                      Moreover, we studied the influence ofhydrogen adsorption on
                      the NP surface composition. We determined the dependenceof
                      the IR bands on the local atomic arrangement via DFT
                      calculations, revealing thatboth bulk alloy composition and
                      neighboring atoms influence the wavenumber of thebands.},
      cin          = {FS-NL / KIT},
      ddc          = {540},
      cid          = {I:(DE-H253)FS-NL-20120731 / I:(DE-H253)KIT-20130928},
      pnm          = {632 - Materials – Quantum, Complex and Functional
                      Materials (POF4-632) / DFG project G:(GEPRIS)426888090 - SFB
                      1441: Verfolgung der aktiven Zentren in heterogenen
                      Katalysatoren für die Emissionskontrolle (TrackAct)
                      (426888090)},
      pid          = {G:(DE-HGF)POF4-632 / G:(GEPRIS)426888090},
      experiment   = {EXP:(DE-H253)Nanolab-02-20150101 /
                      EXP:(DE-H253)Nanolab-01-20150101 /
                      EXP:(DE-H253)Nanolab-03-20150101 /
                      EXP:(DE-H253)Nanolab-04-20150101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:39487797},
      UT           = {WOS:001347460700001},
      doi          = {10.1021/acsnano.4c08291},
      url          = {https://bib-pubdb1.desy.de/record/616571},
}