Regensburg 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 9: Nanoparticles, Nanocrystals and Composites II

CPP 9.6: Vortrag

Montag, 7. März 2016, 16:15–16:30, H41

BaTiO3 Modifications for Photochemical Hydrogen Evolution — •yan xiong and frank marlow — Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany

The perovskite-type material BaTiO3 is a wide-bandgap semiconductor and a prospective material for the photochemical hydrogen evolution via water splitting. In our work, we studied reduction-treatments of BaTiO3 and the effect of Pt as a co-catalyst on BaTiO3 for the hydrogen evolution reaction. We found that the catalytic activity of reduced-BaTiO3 is enhanced by a factor of 1.5 compared to the original material. The rates of hydrogen generation of reduced and bare BaTiO3 are 159 and 100 μmol/h, respectively. The effect of Pt as a co-catalyst on BaTiO3 is non-linear. The photocatalytic activity increases up to 527 μmol/h with the increasing Pt amount up to 1 wt.% and decreases above this amount. In our study reduced BaTiO3 with 1 wt.% Pt has shown the best performance.