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

Dr. Ane Etxebarria

Dr. Yun Liu

Walter Wachsmann

Thin Films Research Group

Research

Recent Publications

Giulia Berti, Earl Davis, Helmut Kuhlenbeck, and Hans-Joachim Freund, "Interaction of CO2 with well-ordered iron sulfide films on Au(111)," Surface Science 710, 121853 (2021).
Yun Liu, Yuman Peng, Matthias Naschitzki, Sandy Gewinner, Wieland Schöllkopf, Helmut Kuhlenbeck, Rossitza Pentcheva, and Beatriz Roldan Cuenya, "Surface oxygen Vacancies on Reduced Co3O4(100): Superoxide Formation and Ultra-Low-Temperature CO Oxidation," Angewandte Chemie International Edition 60 (30), 16514-16520 (2021).
Joachim Paier, Connie J. Nellin, Paul S. Bagus, Agata Plucienik, Helmut Kuhlenbeck, and Hans-Joachim Freund, "Electronic structure of reduced CeO2(111) surfaces interacting with hydrogen as revealed through electron energy loss spectroscopy in comparison with theoretical investigations," Journal of Electron Spectroscopy and Related Phenomena , 147088 (2021).
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 (6), 1270-1283 (2021).
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).
2019
Kuhlenbeck, H.: High Resolution Electron Energy Loss Spectroscopy. IMPRS Fall Block Course 2019, Unifying Concepts in Spectroscopy, Berlin, Germany (2019)
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