Publikationsdatenbank

Organic–inorganic perovskites demonstrate great potential for optical applications due to their intriguing optical and optoelectronic properties. Dedicated efforts have been carried out to understand the energy landscape and charge carrier mobilities for perovskite materials [...]

Materials of the First Wall in near-fusion plasma machines are subjected to a complex load system resulting from the plasma-wall interaction. The materials for their part also influence the plasma. [...]

The subject of this thesis has been to study the interaction of a metallic cobalt catalyst with zeolite supports and alkali as promoter in the CO hydrogenation reaction. For this purpose molecular sieves of the types of zeolite 4A, chabazite/erionite, ZSM-5, silicalite, mordenite and zeolite $\gamma$ as well as two silica carriers have been impregnated with aqueous cobalt-nitrate solution and reduced. [...]

Phonon dispersion was studied by EELS in the impact scattering regime along high symmetry directions $\overline{r} \overline{M}$ of the two dimensional Brillouin zone of Ni(100). The measurements were performed for the clean surface as well as for (2x2) phases of carbon, oxygen and sulfur adsorbed on it. [...]

Die aerobe Behandlung von Abwässern in unbelüfteten flachen Teichen beruht, analog zur natürlichen Selbstreinigung der Oberflächengewässer, hauptsächlich auf dem Zusammenwirken von Algen und Bakterien. Dabei ist die photosynthetische O$_{2}$-Produktion der Algen von entscheidender Bedeutung für die Aufrechterhaltung eines aeroben Stoffwechsels der Bakterien (Arthur 1982). [...]