Prof. Dr. Hans-Joachim Freund
Research interests
Surface science, thin film on supports, spectroscopy and reactivity of metal clusters on oxide films, structure and reactivity, spectroscopy,photon-induced processes, molecular beam
Research Fields in UniCat
Research Field D1
Research Field D2
Selection of research projects
Structure and reactivity
Atom force spectroscopy
Magnetic resonance
Scanning probe spectroscopy
Photon-induced processes
Catalysis/ LASER spectroscopy
Molecular beam
Spectroscopy
Spectro-microscopy
UniCat publications
| 770 Oxygen-induced transformations of an FeO(111) film on Pt(111): A combined DFT and STM study L. Giordano, M. Lewandowski, I. M. N. Groot, Y. N. Sun, J. Goniakowski, C. Noguera, S. Shaikhutdinov, G. Pacchioni, H. J. Freund Journal of Physical Chemistry C 2010, 114, 21504 - 21509, |
| 769 Measuring the charge state of point defects on MgO/Ag(001) T. König, G. H. Simon, H. P. Rust, G. Pacchioni, M. Heyde, H. J. Freund Journal of the American Chemical Society 2009, 131, 17544 - 17545, |
| 768 Electronic properties and charge state of gold monomers and chains adsorbed on alumina thin films on NiAl(110) N. Nilius, M. V. Ganduglia-Pirovano, V. Brázdová, M. Kulawik, J. Sauer, H. J. Freund Physical Review B 2010, 81, 45422 - 45422, |
| 767 A portable microevaporator for low temperature single atom studies by scanning tunneling and dynamic force microscopy H. P. Rust, T. König, G. H. Simon, M. Nowicki, V. Simic-Milosevic, G. Thielsch, M. Heyde, H. J. Freund Review of Scientific Instruments 2009, 80, 113705 - 113705, |
| 764 Promotional effect of metal encapsulation on reactivity of iron oxide supported Pt catalysts M. Lewandowski, Y. Sun, Z. Qin, S. Shaikhutdinov, H. J. Freund Applied Catalysis A: General 2011, 391, 407 - 410, |
| 759 CO adsorption on monometallic and bimetallic Au-Pd nanoparticles supported on oxide thin films H. L. Abbott, A. Aumer, Y. Lei, C. Asokan, R. J. Meyer, M. Sterrer, S. Shaikhutdinov, H. J. Freund Journal of Physical Chemistry C 2010, 114, 17099 - 17104, |
| 758 Particle-size dependent heats of adsorption of CO on supported Pd nanoparticles as measured with a single-crystal microcalorimeter J. H. Fischer-Wolfarth, J. A. Farmer, J. M. Flores-Camacho, A. Genest, I. V. Yudanov, N. Rösch, C. T. Campbell, S. Schauermann, H. J. Freund Physical Review B 2010, 81, 241416 - 241416, |
| 757 Oxidation of Au by surface OH: Nucleation and electronic structure of gold on hydroxylated MgO(001) M. A. Brown, Y. Fujimori, F. Ringleb, X. Shao, F. Stavale, N. Nilius, M. Sterrer, H. J. Freund Journal of the American Chemical Society 2011, 133, 10668 - 10676, |
| 756 Thickness-dependent hydroxylation of MgO(001) thin film E. Carrasco, M. A. Brown, M. Sterrer, H. J. Freund, K. Kwapien, M. Sierka, J. Sauer Journal of Physical Chemistry C 2010, 114, 18207 - 18214, |
| 755 Analysis of the broadening of X-ray photoelectron spectroscopy peaks for ionic crystals C. J. Nelin, P. S. Bagus, M. A. Brown, M. Sterrer, H. J. Freund Angewandte Chemie International Edition 2011, 50, 10174 - 10177, |
| 727 Structures of the ordered water monolayer on Mg(001) R. W?odarczyk, M. Sierka, K. Kwapie?, J. Sauer, E. FCarrasco, A. Aumer, J. F. Gomes, M. Sterrer, H. J. Freund Journal of Physical Chemistry C 2011, 115, 6764 - 6774, |
| 726 Probing the 4f states of ceria cy tunneling spectroscopy X. Shao, J. F. Jerratsch, N. Nilius, H. J. Freund Physical Chemistry Chemical Physics 2011, 13, 12646 - 12651, |
| 725 The interplay between structure and CO oxidation catalysis on metal-supported ultrathin oxide films Y. N. Sun, L. Giordano, J. Goniakowski, M. Lewandowski, Z. H. Qin, C. Noguera, S. Shaikhutdinov, G. Pacchioni, H. J. Freund Angewandte Chemie International Edition 2010, 49, 4418 - 4421, |
| 724 CO adsorption on thin MgO films and single Au adatoms: A scanning tunneling microscopy study B. Yang, X. Lin, H. J. Gao, N. Nilius, H. J. Freund Journal of Physical Chemistry C 2010, 114, 8997 - 9001, |
| 723 Characterizing low-coordinated atoms at the periphery of MgO-supported Au islands using scanning tunneling microscopy and electronic structure calculations X. Lin, N. Nilius, M. Sterrer, P. Koskinen, H. Häkkinen, H. J. Freund Physical Review B 2010, 81, 153406 - 153406, |
| 722 Gold atoms and clusters on MgO(100) films: An EPR and IRAS study M. Yulikov, M. Sterrer, T. Risse, H. J. Freund Surface Science 2009, 603, 1622 - 1628, |
| 721 Morphology and CO adsorption on platinum supported on thin Fe3O4(111) films Z. H. Qin, M. Lewandowski, Y. N. Sun, S. Shaikhutdinov, H. J. Freund Journal of Physics: Condensed Matter 2009, 21, 134019 - 134019, |
| 720 Monolayer iron oxide film on platinum promotes low temperature CO oxidation Y. N. Sun, Z. H. Qin, M. Lewandowski, E. Carrasco, M. Sterrer, S. Shaikhutdinov, H. J. Freund Journal of Catalysis 2009, 266, 359 - 368, |
| 718 Interaction of gold with cerium oxide supports: CeO2(111) thin films vs CeOx nanoparticles M. Baron, O. Bondarchuk, D. Stacchiola, S. Shaikhutdinov, H. J. Freund Journal of Physical Chemistry C 2009, 113, 6042 - 6049, |
| 717 Interaction of water with FeO(111)/Pt(111): Environmental effects and influence of oxygen F. Ringleb, Y. Fujimori, H. F. Wang, H. Ariga, E. Carrasco, M. Sterrer, H. J. Freund, L. Giordano, G. Pacchioni, J. Goniakowski Journal of Physical Chemistry C 2011, 115, 19328 - 19335, |
| 716 Initial formation of positively charged gold on MgO(001) thin films: Identification by experiment and structural assignment by theory M. A. Brown, F. Ringleb, Y. Fujimori, M. Sterrer, H. J. Freund, G. Preda, G. Pacchioni Journal of Physical Chemistry C 2011, 115, 10114 - 10124, |
| 715 CO+NO versus CO+O2 reaction on monolayer FeO(111) films on Pt(111) Y. Lei, M. Lewandowski, Y. N. Sun, Y. Fujimori, Y. Martynova, I. M. N. Groot, R. J. Meyer, L. Giordano, G. Pacchioni, J. Goniakowski, C. Noguera, S. Shaikhutdinov, H. J. Freund ChemCatChem 2011, 3, 671 - 674, |
| 700 Model studies in catalysis N. Nilius, T. Risse, S. Schauermann, S. Shaikhutdinov, M. Sterrer, H. J. Freund Topics in Catalysis 2011, 54, 4 - 12, |
| 699 Relating methanol oxidation to the structure of ceria-supported vanadia monolayer catalysts H. L. Abbott, A. Uhl, M. Baron, Y. Lei, R. J. Meyer, D. J. Stacchiola, O. Bondarchuk, S. Shaikhutdinov, H. J. Freund Journal of Catalysis 2010, 272, 82 - 91, |
| 698 Temperature-dependent morphology, magnetic and optical properties of Li-doped MgO P. Myrach, N. Nilius, S. V. Levchenko, A. Gonchar, T. Risse, K. P. Dinse, L. A. Boatner, W. Frandsen, R. Horn, H. J. Freund, R. Schlögl, M. Scheffler ChemCatChem 2010, 2, 854 - 862, |
| 697 Additive coloring of thin, single crystalline MgO(001) films A. Gonchar, T. Risse, E. Giamello, H. J. Freund Physical Chemistry Chemical Physics 2010, 12, 12520 - 12524, |
| 696 Model studies in heterogeneous catalysis H. J. Freund Chemistry - A European Journal 2010, 16, 9384 - 9397, |
| 695 CO oxidation as a prototypical reaction for heterogeneous processes H. J. Freund, G. Meijer, M. Scheffler, R. Schlögl, M. Wolf Angewandte Chemie International Edition 2011, 50, 10064 - 10094, |
| 694 Oxide ultra-thin films on metals: new materials for the design of supported metal catalysts H. J. Freund, G. Pacchioni Chemical Society Reviews 2008, 37, 2224 - 2242, |
| 684 Oxide ultra-thin films on metals: new materials for the design of supported metal catalysts F. Hans-Joachim, G. Pacchioni Chemical Society Reviews 2008, 37, 2224 - 2242, 10.1039/b718768h |
| 622 Structures of the Ordered Water Monolayer on MgO(001) R. Włodarczyk, M. Sierka, K. Kwapień, J. Sauer, E. Carrasco, A. Aumer, J. F. Gomes, M. Sterrer, H. J. Freund Journal of Physical Chemistry C 2011, 115, 6764 - 6774, 10.1021/jp200112c |
| 504 Temperature-Dependent Morphology, Magnetic and Optical Properties of Li-Doped MgO P. Myrach, N. Nilius, S. V. Levchenko, A. Gonchar, T. Risse, K. P. Dinse , L. Boatner, W. Frandsen, R. Horn, H. J. Freund, R. Schlögl, M. Scheffler ChemCatChem 2010, 2, 854 - 862, 10.1002/cctc.201000083 |
| 466 Thickness-Dependent Hydroxylation of MgO(001) Thin Films E. Carrasco, M. A. Brown, M. Sterrer, H.-J. Freund, K. Kwapien, M. Sierka, J. Sauer Journal of Physical Chemistry C 2010, 114, 18207 - 18214, 10.1021/jp105294e |
| 463 Imaging of individual adatoms on oxide surfaces by dynamic force microscopy G. H. Simon, T. König, H.-P. Rust, M. V. Ganduglia-Pirovano, J. Sauer, M. Heyde, H.-J. Freund Physical Review B 2010, 81, 73411 - 73411, 10.1103/PhysRevB.81.073411 |
| 259 A portable microevaporator for low temperature single atom studies by scanning tunneling and dynamic force microscopy H. P. Rust, T. König, G. H. Simon Review of Scientific Instruments 2009, 80, 113705 - 113705, 10.1063/1.3266971 |
| 258 Monolayer iron oxide film on platinum promotes low temperature CO oxidation Y. N. Sun, Z. H. Qin Journal of Catalysis 2009, 266, 359 - 368, 10.1016/j.jcat.2009.07.002 |
| 257 Measuring the Charge State of Point Defects on MgO/Ag(001) T. König Journal of the American Chemical Society 2009, 131, 17544 - 17545, 10.1021/ja908049n |
| 246 Nucleation of gold atoms on vanadyl-terminated V2O3 (0001) N. Nilius, V. Brázdová, M. V. Ganduglia-Pirovano, V. Simic-Milosevic, J. Sauer, H. J. Freund New Journal of Physics 2009, 11, 93007 - 93007, 10.1088/1367-2630/11/9/093007 |
| 244 Electronic Properties and Charge State of Gold Monomers and Chains Adsorbed on Alumina Thin Films on NiAl(110) N. Nilius, M. V. Ganduglia-Pirovano, V. Brázdová, M. Kulawik, J. Sauer, H. J. Freund Physical Review B 2010, 81, 45422 - 45422, 10.1103/PhysRevB.81.045422 |
| 168 When an Encapsulating Oxide Layer Promotes Reaction on Noble Metals: Dewetting and In situ Formation of an "Inverted" FeOx/Pt Catalyst Y. N. Sun, Z. H. Qin, M. Lewandowski, S. Kaya, S. Shaikhutdinov, H. J. Freund Catalysis Letters 2008, 126, 31 - 35, 10.1007/s10562-008-9643-x |
| 167 Einfluss von Kohlenstoffablagerungen auf die Wasserstoffverteilung in Pd-Nanopartikeln und deren Reaktivität in der Olefinhydrierung M. Wilde, K. Fukutani, W. Ludwig, B. Brandt, J. H. Fischer, S. Schauermann, H. J. Freund Angewandte Chemie 2008, 120, 9430 - 9434, 10.1002/ange.200801923 |
| 166 Influence of Carbon Deposition on the Hydrogen Distribution in Pd Nanoparticles and Their Reactivity in Olefin Hydrogenation M. Wilde, K. Fukutani, W. Ludwig, B. Brandt, J. H. Fischer, S. Schauermann, H. J. Freund Angewandte Chemie International Edition 2008, 47, 9289 - 9293, 10.1002/anie.200801923 |
| 151 Li atoms deposited on single crystalline MgO(001) surface. A combined experimental and theoretical study J. C. Lian, E. Finazzi, C. Di Valentin, T. Risse, H. Gao, G. Pacchioni, H. J. Freund Chemical Physics Letters 2008, 450, 308 - 311, 10.1016/j.cplett.2007.11.049 |
| 150 Properties of Alkali Metal Atoms Deposited on a MgO Surface: A Systematic Experimental and Theoretical Study E. Finazzi, D. V. Cristiana, G. Pacchioni, M. Chiesa, E. Giamello, G. Hongjun, L. Jichun, T. Risse, H. J. Freund Chemistry - A European Journal 2008, 14, 4404 - 4414, 10.1002/chem.200702012 |
| 149 Encapsulation of Pt Nanoparticles as a Result of Strong Metal-Support Interaction with Fe3O4(111) Z. H. Qin, M. Lewandowski, Y. N. Sun, S. Shaikhutdinov, H. J. Freund Journal of Physical Chemistry C 2008, 112, 10209 - 10213, 10.1021/jp801756q |
| 148 Au Dimers on Thin MgO(001) Films: Flat and Charged or Upright and Neutral? V. Simic-Milosevic, M. Heyde, N. Nilius, T. König, H. P. Rust, M. Sterrer, T. Risse, H. J. Freund, L. Giordano, G. Pacchioni Journal of the American Chemical Society 2008, 130, 7814 - 7815, 10.1021/ja8024388 |
| 147 Gold Supported on Thin Oxide Films: From Single Atoms to Nanoparticles T. Risse, S. Shaikhutdinov, N. Nilius, M. Sterrer, H. J. Freund Accounts of Chemical Research 2008, 41, 949 - 956, 10.1021/ar800078m |
| 124 Counting electrons transferred through a thin alumina film into Au chains N. Nilius, M. V. Ganduglia-Pirovano, V. Brázdová, M. Kulawik, J. Sauer, H. J. Freund Physical Review Letters 2008, 100, 96802 - 96802, 10.1103/PhysRevLett.100.096802 |
| 121 Interaction of Gold with Cerium Oxide Supports: CeO2(111) Thin Films vs. CeOx Nanoparticles M. Baron, O. Bondarchuk, D. Stacchiola, S. Shaikhutdinov, H. J. Freund Journal of Physical Chemistry C 2009, 113, 6042 - 6049, 10.1021/jp9001753 |
| 120 Morphology and CO adsorption on platinum supported on thin Fe3O4(111) films Z. H. Qin, M. Lewandowski, Y. N. Sun, S. Shaikhutdinov, H. J. Freund Journal of Physics: Condensed Matter 2009, 21, 134019 - 134019, 10.1088/0953-8984/21/13/134019 |
| 119 Gold atoms and clusters on MgO(100) films; an EPR and IRAS study M. Yulikov, M. Sterrer, T. Risse, H. J. Freund Surface Science 2009, 603, 1622 - 1628, 10.1016/j.susc.2008.10.056 |
