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Dr. Andreas SchaeferDr. Andreas Schaefer
University of Bremen
Institute for Applied and
Physical Chemistry (IAPC)
P.O. Box 330 440
D-28334 Bremen
Tel: +49-421-218 63175

Research interests

Used Methods

Present and Past Collaborations

Curriculum vitae


List of publications


19 D. Ragazzon, M. H. Farstad, A. Schaefer, L. E. Walle, P. Uvdal, A. Borg, A. Sandell, “Growth of TiO2(B)(001) on Au(111) by Chemical Vapor Deposition”, submitted (2014)

18 W. Cartas, R. Rai, A. Sathe, A. Schaefer, J. F. Weaver, “Oxidation of a Tb2O3(111) Thin Film on Pt(111) by Gas-Phase Oxygen Atoms”, accepted for publication, Journal of Physical Chemistry C, DOI: 10.1021/jp505310y

17 J. Shi, A. Schaefer, A. Wichmann, M. M. Mangir, Th. Gesing, A. Wittstock, M. Bäumer, “Nanoporous Gold Supported Ceria for the Water Gas Shift Reaction: UHV Inspired Design for Applied Catalysis”, accepted for publication, Journal of Physical Chemistry C, DOI: 10.1021/jp505433a

16 H. Wilkens, S. Gevers, S. Röhe, A. Schaefer, M. Bäumer, M. Zöllner, T. Schroeder, J. Wollschlaeger, “Structural Changes of Ultra Thin cub-PrO2(111)/Si(111) Films Due to Thermally Induced Oxygen Desorption”, The Journal of Physical Chemistry C, 118 (2014), 3056−3061, DOI: 10.1021/jp4082917


15 M. H. Zoellner, G.Niu, J.-H. Jhang, A. Schaefer, P. Zaumseil, M. Bäumer, and Th. Schroeder
“Temperature-Dependent Reduction of Epitaxial Ce1-xPrxO2-? (x = 0-1) Thin Films on Si(111): A Combined Temperature-Programmed Desorption, X-ray Diffraction, X-ray Photoelectron Spectroscopy, and Raman Study”, The Journal of Physical Chemistry C, 117, (2013), 24851, DOI: 10.1021/jp4082867

14 J.-H. Jhang, A. Schaefer, W. Cartas, S. Epuri, M. Bäumer, J. F. Weaver, Growth and Partial Reduction of Sm2O3(111) Thin Films on Pt(111): Evidence for the Formation of SmO, The Journal of Physical Chemistry C, 117, (2013), 21396 DOI: 10.1021/jp4074416

13 H. Wilkens, O. Schuckmann, R. Oelke, S. Gevers, M. Reichling, A. Schaefer, M. Bäumer, M. H. Zoellner, T. Schroeder, and J. Wollschläger, Structural transitions of epitaxial ceria films on Si(111), Physical Chemistry Chemical Physics, 15, (2013,) 18589

12 D. Ragazzon, A. Schaefer, M.H. Farstad, L.E. Walle, P. Palmgren, A. Borg, P. Uvdal, and A. Sandell, Chemical Vapor Deposition of Ordered TiOx Nanostructures on Au(111), Surface Science, 617 (2013), 211-217, DOI: 10.1016/j.susc.2013.07.019

11 A. Schaefer, D. Ragazzon, L.E. Walle, M.H. Farstad, A. Wichmann, A. Borg, M. Bäumer, and A. Sandell, Controlled modification of nanoporous gold: Chemical vapor deposition of TiO2 in ultrahigh vacuum, Applied Surface Science, 282 (2013), 439-443, DOI: 10.1016/j.apsusc.2013.05.148

10 H. Wilkens, O. Schuckmann, R. Oelke, S. Gevers, A. Schaefer, M. Bäumer, M. H. Zoellner, T. Schroeder, and J. Wollschläger, Stabilization of the ceria iota-phase (Ce7O12) surface on Si(111), Applied Physics Letters, 102 (2013), 111602, DOI: 10.1063/1.4795867

9 S. Röhe, K. Frank, A. Schaefer, A. Wittstock, V. Zielasek, A. Rosenauer, M. Bäumer, CO oxidation on nanoporous gold: A combined TPD and XPS study of active catalysts, Surf. Sci., 609 (2013) 106-112, DOI: 10.1016/j.susc.2012.11.011


8 A. Schaefer, D. Ragazzon, A. Wittstock, L.E. Walle, A. Borg, M. Bäumer, and A. Sandell, Towards Controlled Modification of Nanoporous Gold. A Detailed Surface Science Study on Cleaning and Oxidation, J. Phys. Chem C, 116 (2012) 4564, DOI: 10.1021/jp207638t


7 S. Gevers, T. Weisemoeller, A. Schaefer, V. Zielasek, M. Bäumer, and J. Wollschläger, Structure of oxygen-plasma-treated ultrathin praseodymia films on Si(111), Phys. Rev. B, 83 (2011) 193408 DOI: 10.1103/PhysRevB.83.193408

6 A. Schaefer, S. Gevers, V. Zielasek, T. Schroeder, J. Falta, J. Wollschläger, and M. Bäumer, Photoemission study of praseodymia in its highest oxidation state: the necessity of in-situ plasma treatment, J. Chem. Phys., 134 (2011) 054701, DOI:10.1063/1.3516953

5 A. Ryzhkova, U. Jarzak, A. Schaefer, M. Bäumer, and P. Swiderek, Modification of surface properties of thin polysaccharide films by low-energy electron exposure, Carboh. Polymers, 83 (2011) 608 DOI: 10.1016/j.carbpol.2010.08.029


4 A. Schaefer, A. Sandell, L.E. Walle, V. Zielasek, M. Schowalter, A. Rosenauer, M. Bäumer, Chemistry of thin film formation and stability during praseodymium oxide deposition on Si(111) under oxygen-deficient conditions, Surf. Sci., 604 (2010) 1287 DOI: 10.1016/j.susc.2010.04.016


3 A. Schaefer, V. Zielasek, Th. Schmidt, A. Sandell, M. Schowalter, O. Seifarth, L. E. Walle, Ch. Schulz, J. Wollschlager, T. Schroeder, A. Rosenauer, J. Falta, M. Bäumer, Growth of Praseodymium Oxide Films Under Oxygen Deficient Conditions, Phys. Rev. B., 80 (2009) 045414 DOI: 10.1103/PhysRevB.80.045414

2 A. Wittstock, B. Neumann, A. Schaefer, K. Dumbuya, Ch. Kübel, M.M. Biener, V. Zielasek, H.-P. Steinrück, J.M. Gottfried, J. Biener, A. Hamza, M. Bäumer, Nanoporous Au: An Unsupported Pure Gold Catalyst?, J. Phys. Chem. C, 113 (2009) 5593 DOI: 10.1021/jp808185v


1 A. Schaefer, T. Schroeder, G. Lupina, Yu. Borchert, J. Dabrowski, Ch. Wenger, M. Bäumer, Heteroepitaxial praseodymium sesquioxide films on Si(111): A new model catalyst system for praseodymium oxide based catalysts, Surf. Sci., 601 (2007) 1473 DOI: 10.1016/j.susc.2006.12.080

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