Regensburg 2025 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 15: Poster Session I

CPP 15.28: Poster

Montag, 17. März 2025, 19:00–21:00, P4

Multi-material filament fabrication for 3D printing photoelectrocatalytic carbon nitride composites — •Timo Uhlein and Siowwoon Ng — FAU Erlangen-Nürnberg, Erlangen, Germany

Additive manufacturing of electrochemically active 3D structures is of rising interest. In particular, using fused deposition modeling (FDM) based on filament extrusion concept to produce carbon-polymer-based 3D structures offers several advantages, such as accessibility, low-cost and ease of use. Nevertheless, carbon-based filaments are limited with their applications. Therefore, incorporating additional materials to produce a multi-material filament is of interest, to create 3D-printed electrodes with new or targeted functional properties. In this project, we fabricated a multi-material filament consists of carbon nitride, C3N4, and carbon nanotubes, CNTs, for its photocatalytic properties and high conductivity, respectively, and polymer as the backbone of a FDM filament. We examined the performance of the composite C3N4-CNT electrodes for hydrogen evolution and the photocatalytic degradation of a dye. We indicate that further advancements can be achieved by developing multi-material filaments in order to use them for further electrochemical applications.

Keywords: electrochemistry; additive manufacturing; fused deposition modeling; water splitting