To content
Publication in Angewandte Chemie

Interface Opens the Way to Efficient Catalysts

  • Top News
  • Research
Group photo of five men © Oliver Schaper​/​TU Dortmund
The research group of Dr. Giovanni Zamborlini (center) and Prof. Mirko Cinchetti (right) from the Department of Physics at TU Dortmund University conducts research on interfaces.

Enzymes are proteins that act as biological catalysts accelerating chemical reactions. They can be used for developing synthetic catalysts with high efficiency and selectivity. Dr. Giovanni Zamborlini and Prof. Mirko Cinchetti from the Department of Physics at TU Dortmund University, with collaborators in an international research group, have succeeded in developing a 2-dimensional interface that mimics the enzymatic properties on surfaces by depositing their reaction centers on metal surfaces. This interface serves as a system to model the on-surface enzymatic properties and develop novel two-dimensional catalysts. The researchers present their findings in the renowned scientific journal Angewandte Chemie.

Enzymes are essential for nearly all metabolic processes in cells that require catalysis. They can serve as the blueprint for the development of new, highly efficient synthetic catalysts inspired by nature. The physicists in Prof. Cinchetti’s group at TU Dortmund University are primarily interested in the novel properties that emerge at interfaces formed by organic molecules placed in contact with a transition metal surface. One example of organic molecules studied in the research group are the porphyrin complexes. Porphyrins are molecules. Porphyrins represent the most prominent example of tetrapyrrolic compounds and are engaged in essential processes that take part in vital processes such as photosynthesis or oxygen transport in the human circulatory system just to mention a couple of examples.

The research group has now succeeded in creating one such metal-organic interface through vapor deposition of nickel porphyrins on a copper surface. In the process, the nickel ions in the center of the molecule form a well-ordered lattice structure. Such a 2D network presents two essential advantages. Firstly, the nickel ions are full-fledged single-atom catalysts, thus promising particularly good performance. Secondly, the Ni ions arranged in the 2D array have identical chemical and physical properties leading to an evenly distribution of the catalytic properties across the surface.

Interface enables decomposition of nitric oxide

The researchers then tested the performance of the interface they had developed by exposing it to nitric oxide (NO). Nitric oxide is a toxic and polluting gas that is emitted by cars, trucks, and other vehicles. The data indicate that this interface enables, through a chemical reaction called the disproportionation reaction, the decomposition of three nitric oxide molecules into one nitrous oxide (N2O) and one nitrogen dioxide (NO2) molecule. The first of these is non-toxic and has applications in medicine as an anesthetic and pain reliever, and the latter is used predominantly in the production of fertilizer. In addition, the researchers were able to show that the nitrogen dioxide molecules initially remain anchored to the nickel network but can be removed by subsequent heating of the system.

„The system we developed represents an example of biomimetic interfaces with which natural processes can be modeled and better understood, so that further classes of two-dimensional catalysts with high efficiency and selectivity can be developed in the future“ says Dr. Giovanni Zamborlini, a scientific staff member in Prof. Mirko Cinchetti’s research group. These novel catalysts could find application in many different areas, since they are ubiquitous within the chemical industry.

This work is the result of an international cooperation between TU Dortmund University, the Jülich Research Center, the University of Trieste, the University of Erlangen-Nuremberg, and the University of Graz.

Link to the publication:

Contact for inquiries:

Cafeteria menus

Location & approach

The campus of TU Dort­mund University is located close to interstate junction Dort­mund West, where the Sauerlandlinie A 45 (Frankfurt-Dort­mund) crosses the Ruhrschnellweg B 1 / A 40. The best interstate exit to take from A 45 is “Dort­mund-Eichlinghofen” (closer to South Campus), and from B 1 / A 40 “Dort­mund-Dorstfeld” (closer to North Campus). Signs for the uni­ver­si­ty are located at both exits. Also, there is a new exit before you pass over the B 1-bridge leading into Dort­mund.

To get from North Campus to South Campus by car, there is the connection via Vogelpothsweg/Baroper Straße. We recommend you leave your car on one of the parking lots at North Campus and use the H-Bahn (suspended monorail system), which conveniently connects the two campuses.

TU Dort­mund University has its own train station (“Dort­mund Uni­ver­si­tät”). From there, suburban trains (S-Bahn) leave for Dort­mund main station (“Dort­mund Hauptbahnhof”) and Düsseldorf main station via the “Düsseldorf Airport Train Station” (take S-Bahn number 1, which leaves every 15 or 30 minutes). The uni­ver­si­ty is easily reached from Bochum, Essen, Mülheim an der Ruhr and Duisburg.

You can also take the bus or subway train from Dort­mund city to the uni­ver­si­ty: From Dort­mund main station, you can take any train bound for the Station “Stadtgarten”, usually lines U41, U45, U 47 and U49. At “Stadtgarten” you switch trains and get on line U42 towards “Hombruch”. Look out for the Station “An der Palmweide”. From the bus stop just across the road, busses bound for TU Dort­mund University leave every ten minutes (445, 447 and 462). Another option is to take the subway routes U41, U45, U47 and U49 from Dort­mund main station to the stop “Dort­mund Kampstraße”. From there, take U43 or U44 to the stop “Dort­mund Wittener Straße”. Switch to bus line 447 and get off at “Dort­mund Uni­ver­si­tät S”.

The AirportExpress is a fast and convenient means of transport from Dortmund Airport (DTM) to Dortmund Central Station, taking you there in little more than 20 minutes. From Dortmund Central Station, you can continue to the university campus by interurban railway (S-Bahn). A larger range of international flight connections is offered at Düsseldorf Airport (DUS), which is about 60 kilometres away and can be directly reached by S-Bahn from the university station.

The H-Bahn is one of the hallmarks of TU Dort­mund University. There are two stations on North Campus. One (“Dort­mund Uni­ver­si­tät S”) is directly located at the suburban train stop, which connects the uni­ver­si­ty directly with the city of Dort­mund and the rest of the Ruhr Area. Also from this station, there are connections to the “Technologiepark” and (via South Campus) Eichlinghofen. The other station is located at the dining hall at North Campus and offers a direct connection to South Campus every five minutes.

The facilities of TU Dortmund University are spread over two campuses, the larger Campus North and the smaller Campus South. Additionally, some areas of the university are located in the adjacent “Technologiepark”.

Site Map of TU Dortmund University (Second Page in English).