Author/Authors :
Notoya، نويسنده , , Yasuharu and Hayakawa، نويسنده , , Kuniko and Fujikawa، نويسنده , , Takashi and Kubota، نويسنده , , Takeshi and Shido، نويسنده , , Takafumi and Asakura، نويسنده , , Kiyotaka and Iwasawa، نويسنده , , Yasuhiro، نويسنده ,
Abstract :
A recent experimental result shows that Pt L-edge XANES spectra for Pt small cluster with ∼20 Pt atoms are sensitive to CO adsorption. In the present study we try to extract useful information about geometric and electronic structures of these cluster by applying a full multiple-scattering approach for the XANES analyses. Although IR analyses show that [CO]top/[CO]bridge is nearly constant for wide range of [CO]ad, it is difficult to estimate the ratio because of the large difference of the IR transition intensity for different adsorbed CO molecules. The present XANES analyses provide us useful new information [CO]top/[CO]bridge=1–2.
