Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 34: Poster Session I (Graphene; Plasmonics and nanooptics; Coherence and coherent control in nanophotonics and plasmonics)
O 34.36: Poster
Dienstag, 27. März 2012, 18:15–21:45, Poster E
Investigations of silver and copper nanoparticles for photocatalysis — •Hannes Hartmann1, Vladimir Popok2, Alexandra Pazidis1, Antje Neubauer1, I. Barke1, Stephan Bartling1, Stefan Lochbrunner1, and Karl-Heinz Meiwes-Broer1 — 1Institut für Physik, Universität Rostock, Universitätsplatz 3, 18051 Rostock, Germany — 2Department of Physics and Nanotechnology, Aalborg University, 9220 Aalborg, Denmark
Clusters and nanoparticles are of significant interest for applications in catalysis. One approach is the utilization of the nanoparticles’ optical properties to increase the efficiency of existing catalytic schemes for hydrogen production. Here the interaction of clusters with Ir based photosensitizers (PS) is investigated. These molecules are known to be promising systems for reduction of water to hydrogen in combination with metal-complex catalysts [1].
Using arc-discharge and magnetron sputtering cluster ion sources, silver and copper nanoparticles are produced and deposited on fused silica substrates. The PS is then deposited on cluster-covered samples. Their optical properties are characterized by absorption and fluorescence measurements. For understanding the detailed processes investigations with PEEM (photoemission electron microscopy) are planned. The current status of the experimental setup is presented.
Beller et al., Angew. Chem. 2009, 48, 9962-9965