[Zurück]


Beiträge in Tagungsbänden:

X. Li, Matteo Roiaz, Verena Pramhaas, Ch. Rameshan, G. Rupprechter:
"POLARIZATION-DEPENDENT SFG SPECTROSCOPY OF NEAR AMBIENT PRESSURE CO ADSORPTION ON Pt(111) AND Pd(111)";
in: "Vienna Young Scientists Symposium", Book-of-Abstracts.com / D.I. Krebs, Gumpoldskirchen, 2019, ISBN: 978-3-9504017-9-0, S. 74 - 75.



Kurzfassung englisch:
For many years, the surface science approach to heterogeneous catalysis was restricted to gas
pressures of 10-6 mbar and below, giving rise to the well-known "pressure gap" problem [1,2]. This
limitation was overcome when surface-sensitive methods were developed that could be operated at
least in the mbar pressure range. Sum frequency generation (SFG) vibrational spectroscopy has high
surface sensitivity and selectivity, most importantly, it is non-destructive and without vacuumlimitation,
which make it popular in the study of surface/interface sciences including the catalysis
reactions. Polarization-dependent (PD-) SFG has been proven an excellent tool in providing the
microscopic information of adsorbed molecules at interfaces, such as molecular structure,
orientation, symmetry, chirality, and dynamics [3-5]. However, the detail analysis of CO on model
catalysts (Pt(111) and Pd(111)) is still lack. This is because usually only one polarizationcombinations
(i.e. PPP) spectra could be measured before [6,7], resulting in the missing of the
orientation information.

Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.