Two-dimensional oxides: new structures, new functions and new materials
Event details
| Date | 17.02.2014 |
| Hour | 13:15 |
| Speaker |
Gianfranco Pacchioni, Universita degli Studi di Milano-Bicocca, Milano, Italy Bio: Gianfranco Pacchioni is Vice-Rector for Research at the University of Milano Bicocca. He received the degree in Chemistry at the University of Milano (1978) and the Ph.D. in Physical Chemistry at the Free University of Berlin (1984). He has been working at the IBM Almaden Research Center in California (1987) and at the Technical University of Munich (1993). Associate Professor of Inorganic Chemistry at the University of Milano (1988), he is now Full Professor of Solid State Chemistry at the University of Milano Bicocca (since 2000). He received various awards including the Nasini Medal of the Italian Chemical Society (1994), the National Price “Federchimica” (1996), the Alexander von Humboldt Award (2005). He is Fellow of the European Academy of Sciences (2009) and of the Academia Europaea (2012). He has been Chairman of the Department of Materials Science at the University of Milano Bicocca (2003-2009); of the COST Action “Inorganic oxide surfaces and interfaces” (2006-2010); of the Panel PE5 of the European Research Council for the Advanced Grants (2008-2012); of the Theoretical and Computational Chemistry Division of the Italian Chemical Society (2011-2013). His main interests are theory and electronic structure of oxides (bulk, surface, thin films, nanostructures), supported metal clusters, materials for catalysis, photocatalysis and energy production. Gianfranco Pacchioni is co-author of more than 400 papers with about 16000 citations (h-index: 68) and has given about 300 invited talks at international conferences and research institutions. |
| Location | |
| Category | Conferences - Seminars |
Graphene is the prototype of two-dimensional materials, but is not the only one. SiO2 films of few nanometers thickness grown on Si have been the basis of the microelectronics revolution in the second half of last century. In general, ultrathin oxide films grown on a metal, also called two- dimensional oxides, have a wide range of applications [1]. Oxides at the nanoscale may exhibit specific surface morphology, physical properties, chemical reactivity, thus providing new opportunities for the design of innovative materials. Here we will address in particular the role of two-dimensional oxides for heterogeneous catalysis. Theory has a very important role in this field and, in combination with experiments, can answer several important questions like: are the electronic properties of an oxide film of just a few atomic layers similar to those of the corresponding crystalline phases? How thick an oxide film has be to recover typical bulk properties? How important is the formation of a metal/oxide interface for the surface properties? What is the role of the strain in the supported layer? These and other related questions will be addressed in this talk by discussing transport phenomena across two-dimensional oxides (charging effects), the structural flexibility of oxide ultrathin films, nanoporosity, and in general the possibility to design nano-structured oxides with new properties and functionalities [2,3].
[1] G. Pacchioni, “Two-dimensional oxides: multifunctional materials for advanced technologies”,
Chemistry a European Journal, 18, 10144-10158 (2012).
[2] L. Giordano, G. Pacchioni, Accounts of Chemical Research, “Oxide films at the nanoscale: new structures, new functions, and new materials”, 44, 1244-1252 (2011).
[3] G. Pacchioni, H. J. Freund, “Electron transfer at oxide surfaces. The MgO paradigm: from defects to
ultrathin films”, Chemical Reviews, 113, 4035-4072 (2013).
[1] G. Pacchioni, “Two-dimensional oxides: multifunctional materials for advanced technologies”,
Chemistry a European Journal, 18, 10144-10158 (2012).
[2] L. Giordano, G. Pacchioni, Accounts of Chemical Research, “Oxide films at the nanoscale: new structures, new functions, and new materials”, 44, 1244-1252 (2011).
[3] G. Pacchioni, H. J. Freund, “Electron transfer at oxide surfaces. The MgO paradigm: from defects to
ultrathin films”, Chemical Reviews, 113, 4035-4072 (2013).
Links
Practical information
- General public
- Free
Organizer
- IMX Seminars
Contact
- Fischer Ingrid <[email protected]>