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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 35: Poster Session II
CPP 35.43: Poster
Wednesday, March 29, 2023, 11:00–13:00, P1
Hybrid hydrogel films for scalable H2 production — •Morgan Le Dû1, Julija Reitenbach1, Manuel A. Reus1, Kun Sun1, Zerui Li1, Sigrid Bernstorff2, Cristiane Henschel3, André Laschwesky3, Christine M. Papadakis4, and Peter Müller-Buschbaum1,5 — 1TUM School of Natural Sciences, Chair for Functional Materials, Garching, Germany — 2Elettra-Sincrotrone Trieste, Basovizza, Italy — 3Fraunhofer-Institut für Angewandte Polymerforschung, Potsdam-Golm, Germany — 4TUM School of Natural Sciences, Soft Matter Physics group, Garching, Germany — 5Heinz Maier-Leibnitz-Zentrum (MLZ), TUM, Garching, Germany
The water splitting reaction can produce hydrogen-based energy from solar radiation. A promising photocatalyst for this reaction is Pt loaded graphitic carbon nitride (g-CN). It shows a high H2 evolution efficiency in aqueous solution. Previous works proposed to introduce hydrogels as host matrix and water storage to facilitate homogeneous spreading. This work aims to develop this system industrially scalable in a polymer thin film configuration. Poly(N-isopropylacrylamide) thin films exhibit good swelling capacity in water vapor atmosphere and appear suitable for a hybrid thin film system. A new isomer poly(N-vinylisobutyramide) seems also promising due to its higher lower critical solution temperature in aqueous solution. Therefore, a comparison of both polymers is based on in situ spectral reflectance and FT-IR measurements. The films have been spray coated to proceed grazing incident small angle x-ray scattering where g-CN/Pt blended polymer films microstructure was analysed under light irradiation.