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Artikelaktionen

Over, Prof. Dr. Herbert

Over, Herbert

Over, Prof. Dr. Herbert

"Oberflächenchemie und Modellkatalyse"

We use surface chemical methods and techniques to study the molecular processes encountered in heterogeneously catalyzed reaction, such as the HCl oxidation over RuO2-based and CeO2 based materials. Together with working group of Bernd Smarsly we develop shape-controlled nano-particles of CeO2 and hydrous RuO2 model catalysts. Here stability and activity test of these catalysts for corrosive reactions are conducted to learn more about the underlying microscopic processes. Complemented are these studies with kinetic simulations based on ab-initio based kinetic Monte Carlo methods.
In surface electrocatalysis, we develop and characterize novel ultrathin single crystalline metallic oxide electrodes, which are employed in the kinetic and stability studies of oxygen and chlorine evolution reaction. One of the major objectives is to unravel the elementary reaction steps in these evolution reactions and constructing the free energy profile using both electrochemical techniques and theoretical ab-initio methods. We conduct synchrotron based experiments to study in-situ the corrosion processes of such model electrodes under strongly oxidizing conditions.

over_bild

Kontakt

Prof. Dr. Herbert Over

Physikalisch-Chemisches Institut

Tel.: +49-641-99-34550
Fax: +49-641-99-34599

Chemie-Institutsgebäude, Heinrich-Buff-Ring 17, Raum B 41

Over, Herbert, Abb. 1

Anwendungen/Funktionen:

  • (Photo-)Elektrokatalyse
  • Katalyse
  • Oberflächentechnologien

Methoden:

  • Chemische Analytik
  • Elektrochemische Messungen
  • Massenspektrometrie
  • Rastersondenmethoden
  • Schwingungsspektroskopie
  • Strukturanalytik

Materialklassen:

  • Dünnschichten
  • Festelektrolyte/gemischte Leiter
  • Metallanoden
  • Nanomaterialien
  • Oxide

Over, Prof. Dr. Herbert

"Surface Chemistry and Model Catalysis"

We use surface chemical methods and techniques to study the molecular processes encountered in heterogeneously catalyzed reaction, such as the HCl oxidation over RuO2-based and CeO2 based materials. Together with working group of Bernd Smarsly we develop shape-controlled nano-particles of CeO2 and hydrous RuO2 model catalysts. Here stability and activity test of these catalysts for corrosive reactions are conducted to learn more about the underlying microscopic processes. Complemented are these studies with kinetic simulations based on ab-initio based kinetic Monte Carlo methods.
In surface electrocatalysis, we develop and characterize novel ultrathin single crystalline metallic oxide electrodes, which are employed in the kinetic and stability studies of oxygen and chlorine evolution reaction. One of the major objectives is to unravel the elementary reaction steps in these evolution reactions and constructing the free energy profile using both electrochemical techniques and theoretical ab-initio methods. We conduct synchrotron based experiments to study in-situ the corrosion processes of such model electrodes under strongly oxidizing conditions.

over_bild

Contact

Prof. Dr. Herbert Over

Institute of Physical Chemistry

Phone: +49-641-99-34550
Fax: +49-641-99-34599

Chemistry building, Heinrich-Buff-Ring 17, Room B 41

Over, Herbert, Abb. 1

Applications/Functionalities:

  • (Photo-)Electrocatalysis
  • Catalysis
  • Surface Technologies

Methods:

  • Chemical Analytics
  • Electrochemical Measurements
  • Mass Spectrometry
  • Scanning Probe Methods
  • Vibrational Spectroscopy
  • Structural Analytics

Classes of Materials:

  • Thin Films
  • Solid Electrolytes / mixed Conductors
  • Metal Anodes
  • Nanomaterials
  • Oxides