화학공학소재연구정보센터
Journal of Physical Chemistry, Vol.99, No.47, 17259-17264, 1995
Interaction of Co with Pt Supported on ZrO2(100) - Evidence for Co Adsorbed at the Pt-ZrO2 Interface
The structure and reactivity of Pt films supported on cubic ZrO2(100) surfaces were studied using a combination of Auger electron spectroscopy (AES), temperature-programmed desorption (TPD), and high-resolution electron energy loss spectroscopy (HREELS). Pt films deposited from the vapor phase were found to grow in a layer-by-layer fashion on the ZrO2(100) surface at 300 K. Heating to temperatures in excess of 700 K caused the Pt films to agglomerate into particles. CO was found to adsorb in both Linear on top and twofold bridging configurations on the two-dimensional supported Pt films. In contrast, on supported Pt particles, in addition to linear on top species, HREEL spectra provided evidence for CO adsorption sites at the Pt-ZrO2(100) interface.