# Constantin Walenta Postdoctoral Fellow ![Constantin Walenta](/sites/g/files/omnuum7796/files/styles/hwp_4_5__480x600/public/friend-lab/files/walenta.bw_.jpg?itok=OBAepf0f) location\_on 12 Oxford St. Mallinckrodt B22 Cambridge, MA 02138 smartphone [6174953331](tel:6174953331) email Constantin obtained his doctorate degree in the group of Prof. Ueli Heiz at the Technical University of Munich (Catalysis Research Center). He investigated photocatalytic hydrogen evolution using sub-nanometer Pt clusters on semiconductors to disentangle photocatalytic from thermal reaction steps. He was co-advised by Prof. Martin Stutzmann (Walter-Schottky Institute, Technical University of Munich) in a collaborative project where he explored photochemical reactions of III-V semiconductor surfaces in relation to the semiconductor’s photophysical properties. In the Friend Group, he examines semiconducting oxides for complex chemical surface reactions to determine the effect of single atom co-catalysts on surface (photo-)chemistry. - ## People [Former Group Members 2010 to present](/people/former-group-members-2010-to) [Postdoctoral Researchers](/people/postdoctoral-researcher)