Dr. Stacchiola obtained his B.S. degree (1997) at UNSL (Argentina), his Ph.D. (2002) at the University of Wisconsin Milwaukee and was a Humboldt Research Fellow at the Fritz-Haber-Institute in Berlin (2005−2007). His research focuses in surface chemistry studies by in-situ tools, and in particular on structure–reactivity relationships in catalysis. The use of well-defined model catalysts allows the characterization of systems at the molecular and atomic level. Studies of these model catalysts by complimentary in-situ ambient pressure spectroscopy and microscopy gives direct evidence of dynamically generated active phases and adsorbed surface species, which are produced or stabilized only under reaction conditions. He is the author of over 150 peer-reviewed publications.