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      Bridging the pressure and materials gaps: high pressure sum frequency generation study on supported Pd nanoparticles

      1 , , ,
      Physical review letters
      American Physical Society (APS)

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          Abstract

          Infrared-visible sum frequency generation vibrational spectroscopy is applied for the first time to monitor CO stretching vibrations on alumina supported Pd nanoparticles in a pressure range from 10(-7) to 200 mbar. The adsorption behavior of Pd aggregates with 3 and 6 nm mean size is dominated by surface defects and two different adsorption sites (twofold bridging and on-top) were identified. The CO adsorption site occupancy on Pd nanocrystals is mainly governed by the gas phase pressure while the structure of the particles and their temperature have a smaller influence.

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          Author and article information

          Journal
          Phys. Rev. Lett.
          Physical review letters
          American Physical Society (APS)
          1079-7114
          0031-9007
          Jul 24 2000
          : 85
          : 4
          Affiliations
          [1 ] Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany.
          Article
          10.1103/PhysRevLett.85.776
          10991396
          8fd73fba-c437-4352-8b4f-6a932370143e
          History

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