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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 14: Poster Session II - Complex Fluids and Perovskites
CPP 14.7: Poster
Tuesday, March 23, 2021, 16:30–18:30, CPPp
Observing the role of ß-lactoglobulin in biotemplating TiO2 during spray deposition with in situ GIXS techniques: A route to green sol-gel chemistry — •Julian E. Heger1, Wei Chen1, Shanshan Yin1, Christian L. Weindl1, Christina Geiger1, Calvin J. Brett2,3, Wiebke Ohm3, Stephan V. Roth2,3, and Peter Müller-Buschbaum1,4 — 1Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Straße 1, 85748 Garching, Germany — 2Royal Institute of Technology KTH, Teknikringen 34-35, 100 44 Stockholm, Sweden — 3Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany — 4Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
Polymer directed sol-gel chemistry provides a powerful way for a morphological tailored synthesis of titania, which can be subsequently spray deposited to form functional films. For a green chemistry approach, synthetic polymers are substituted with water-soluble biopolymers. In this work, we investigate the templating effect of ß-lactoglobulin (ß-lg), which is known to form different aggregates as a function of net charge controlled by pH during denaturation. For this, ß-lg is mixed with an established titania precursor and denatured at a pH below its isoelectric point, to obtain hierarchical and crystalline titania at low-temperatures. Advanced in situ grazing incidence X-ray scattering (GIXS) synchrotron techniques identify the underlying kinetics of ß-lg biotemplated titania films during spray deposition.