In this study, TiO2 filters with complex geometries (i.e., grid, honeycomb and gyroid) were 3D printed via direct ink writing (DIW), sintered at 1350 °C, coated using a sol-gel method and treated at 600 °C to induce the formation of anatase-phase TiO2. The sintered TiO2 filters exhibited a relative density between 92.19 % and 94.81 %, with shrinkage ranging from 19 % to 22 %. XRD and SEM analyses confirmed the formation of the anatase phase and a uniform coating with a thickness of 4.3–4.5 μm on the TiO2 filters. The surface-engineered TiO2 filters were evaluated for the photocatalytic degradation of Rhodamine B under UV light. Among the tested structures, the gyroid geometry exhibited the highest performance (completely degrading Rhodamine B in 200 min) due to its higher surface area.
Jyoti, J., Mariani, M., Nanni, F., Mazzuca, C., Bragaglia, M. (2026). Influence of infill geometry on the degradation performance of 3D printed TiO2 photocatalytic filters. CERAMICS INTERNATIONAL, 52(1), 722-734 [10.1016/j.ceramint.2025.11.372].
Influence of infill geometry on the degradation performance of 3D printed TiO2 photocatalytic filters
Jyoti;Marco Mariani;Francesca Nanni;Claudia Mazzuca;Mario Bragaglia
2026-01-01
Abstract
In this study, TiO2 filters with complex geometries (i.e., grid, honeycomb and gyroid) were 3D printed via direct ink writing (DIW), sintered at 1350 °C, coated using a sol-gel method and treated at 600 °C to induce the formation of anatase-phase TiO2. The sintered TiO2 filters exhibited a relative density between 92.19 % and 94.81 %, with shrinkage ranging from 19 % to 22 %. XRD and SEM analyses confirmed the formation of the anatase phase and a uniform coating with a thickness of 4.3–4.5 μm on the TiO2 filters. The surface-engineered TiO2 filters were evaluated for the photocatalytic degradation of Rhodamine B under UV light. Among the tested structures, the gyroid geometry exhibited the highest performance (completely degrading Rhodamine B in 200 min) due to its higher surface area.| File | Dimensione | Formato | |
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