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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 37: Biopolymers, Biomaterials and Bioinspired Functional Materials (joint session CPP/BP)
CPP 37.5: Talk
Thursday, March 21, 2024, 10:45–11:00, H 0111
Tailoring morphologies of protein-templated titania nanostructures — •Linus F. Huber1, Stephan V. Roth2, Manuel E. Scheel1, and Peter Müller-Buschbaum1,3 — 1TUM School of Natural Sciences, Chair for Functional Materials, 85748 Garching, Germany — 2Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany — 3TUM, MLZ, 85748 Garching, Germany
Biotemplating is an effective technique for structuring hybrid inorganic-organic materials at the nano scale. This method facilitates the fine-tuning of material characteristics such as porosity and structure sizes. Therefore, parameters like the electronic conductivity can be adjusted for different applications. This work focuses on titania thin films with different structures, for their application in thermoelectric generators. Beta-lactoglobulin, a bovine whey protein, serves as a template in the sol-gel synthesis process. The Seebeck effect allows the conversion of waste heat into electrical energy. This research aims to address the scarcity, toxicity, and costliness of current state-of-the-art thermoelectric materials. To investigate the morphologies of titania, a combination of in situ GISAXS, GIWAXS, and SEM techniques are used. In particular, in situ GISAXS printing allows for a time-resolved exploration of the structure formation, domain sizes, and domain distances.These observed structural differences are subsequently correlated with measurements of the Seebeck coefficient, electrical conductivity and optical properties.
Keywords: Biopolymers; GISAXS; Nanostructures; hybrid; Thermoelectric