Thin Films

Thin Films

The activities of the group are centered around thin film catalyst models. Such models mimic relevant aspects of a real world catalysts, but have a reduced complexity. That allows us to understand catalytic processes in detail. Central activities of the group are the development of thin film preparation recipes and the study of thermal and electrocatalytic reactions at the thin film / gas or liquid interfaces.

Supported catalysts may be mimicked by deposition of metallic aggregates. Several surface-sensitive experimental methods (XPS, TPD, STEM, EELS, IR surface action spectroscopy) are applied under vacuum conditions and at elevated pressures.

Group Members

Dr. Earl Davis

Matthias Naschitzki

Dr. Yun Liu

Walter Wachsmann

Dr. Ane Etxebarria

Thin Films Research Group

Research

Recent Publications

Yun Liu, Zongfang Wu, Helmut Kuhlenbeck, and Hans-Joachim Freund, "Surface Action Spectroscopy: A review and a Perspective on a New Technique to Study Vibrations at Surfaces," The Chemical Record 20 (2020).
Hans-Joachim Freund, Markus Heyde, Helmut Kuhlenbeck, Niklas Nilius, Thomas Risse, Thomas Schmidt, Shamil K. Shaikhutdinov, and Martin Sterrer, "Chapter model systems in heterogeneous catalysis at the atomic level: a personal view," Science China Chemistry 63 (4), 426-447 (2020).
Yun Liu, Zongfang Wu, Matthias Naschitzki, Sandy Gewinner, Wieland Schöllkopf, Xiaoke Li, Joachim Paier, Joachim Sauer, Helmut Kuhlenbeck, and Hans-Joachim Freund, "Elucidating Surface Structure with Action Spectroscopy," Journal of the American Chemical Society 142 (5), 2665-2671 (2020).
Paul S. Bagus, Connie J. Nelin, Sergey V. Levchenko, Xunhua Zhao, Earl Davis, Helmut Kuhlenbeck, and Hans-Joachim Freund, "Surface core level BE shifts for CaO(100): insights into physical origins," Physical Chemistry Chemical Physics 21 (45), 25431-25438 (2019).
Zhaorui Li, Kristin Werner, Kun Qian, Rui You, Agata Plucienik, Aiping Jia, Lihui Wu, Liyuan Zhang, Haibin Pan, Helmut Kuhlenbeck, Shamil K. Shaikhutdinov, Weixin Huang, and Hans-Joachim Freund, "Oxidation of Reduced Ceria by Incorporation of Hydrogen," Angewandte Chemie International Edition 58 (41), 14686-14693 (2019).
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