Regensburg 2022 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 20: Poster
DS 20.50: Poster
Mittwoch, 7. September 2022, 16:00–18:00, P3
Hybrid thin film for H2 evolution applications — •Morgan Le Dû1, Manuel Andree Reus1, Kun Sun1, Zerui Li1, Cristiane Henschel2, Andre Laschewsky2,3, Sigird Bernstorff4, and Peter Müller-Buschbaum1,5 — 1TU München, Physik-Department, LS Funktionelle Materialien, 85748 Garching — 2Universität Potsdam, Institut für Chemie, 14476 Potsdam-Golm — 3Fraunhofer Institut für Angewandte Polymerforschung, 14476 Postdam-Golm — 4Elettra-Sincrotrone Trieste, Basovizza, 34149 Trieste, Italy — 5MLZ, TU München, 85748 Garching
Photocatalysis via water splitting reaction is a way to implement the sun to produce hydrogen-based energy. Recently, Pt loaded graphitic carbon nitride (g-CN) has been found has a promising photocatalyst for H2 evolution under visible light. The aim of this work is to bring this material in a polymer thin film configuration to make it suitable for industrial purposes. Poly(N-isopropylacrylamide) exhibits good swelling capacity of water vapor and seems to be suitable for such a hybrid thin film system. A new isomer of PNIPAM, poly(N-vinylisobutyramide) (PNVIBAM) raised our attention due to its higher lower critical solution temperature (LCST) in aqueous solution (≈ 39∘C) which makes it more stable in ambient environment. Spray coating has been chosen to be the deposition technique of PNVIBAM/g-CN/Pt hybrid films. A comparative study of the photocatalyst concentrations is presented. Grazing incident small angle x-ray scattering is the main tool of this work. G-CN/Pt blended polymer films structure is analysed under light irradiation condition.