PhD Thesis Defense- Fernando García Martínez

Published: February 16, 2022

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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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.