PhD Thesis Defense- Fernando García Martínez
Heterogeneous catalysis on curved crystals:
CO oxidation on Pt and Rh
February 17, 11:00
CFM Auditorium
Candidate: Fernando García Martínez
Supervisors: Enrique Ortega Conejero and Frederik M. Schiller
Research group: Nanophysics Lab
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Summary
In this thesis, the candidate investigates the effect of atomic steps with different geometry/coordination on the CO oxidation in the mbar range of pressures.
Asymmetric ignition of A-B Rh(111) vicinals explored with a c-Rh(111) crystal.
The work has been carried out using curved Rh and Pt crystals, which allow to study different christallographic surfaces using the very same single samples. Using Planar Laser-Induced Fluorescence (PLIF), the candidate explores the (naively different) CO ignition across Pt and Rh stepped surfaces, and with Near Ambient-Pressure X-ray Photoemission Spectroscopy (NAP-XPS) the chemical species involved in such ignition at the different facets are studied.