Parts | Days | Selection | Search | Updates | Downloads | Help
O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.117: Poster
Wednesday, March 16, 2011, 17:30–21:00, P4
Solar2Fuel: XPS and TPD characterization of functionalized TiO2 surfaces for photocatalytic reduction of CO2 — •Florian Staier, Michael Grunze, and Michael Zharnikov — Angewandte Physikalische Chemie, Universität Heidelberg, INF 253, 69120 Heidelberg
The handling of CO2 produced by industrial installations and power plants has become a very important environmental issue nowadays because of it’s generally accepted impact on the green house effect. In this context, a storage of CO2 or its conversation to fuel or useful chemicals are highly desirable. Along these lines, the solar2fuel project, funded by BMBF, aims on photocatalytic conversion of CO2 to methanol with a sufficient quantum efficiency which can justify and make rentable an industrial realization of the process. As the primary catalytic system TiO2 nanoparticle powder coatings are used. These particles are doped with metals to enhance their catalytic activity and functionalized with specially designed dyes which promote photocatalytic reaction and move the absorption spectrum from UV (characteristic of TiO2) to the visible range. We present first results on characterization of these catalytic systems by several complimentary techniques as well as on temperature-programmed-desorption of CO2 and methanol from these functionalized surfaces.