Barbosa Isabel S O, Manrique Yaidelin A, Paiva Diana, Faria Joaquim L, Santos Ricardo J, Silva Cláudia G
LSRE-LCM - Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials, Faculty of Engineering, University of Porto Rua Dr Roberto Frias 4200-465 Porto Portugal
ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto Rua Dr Roberto Frias 4200-465 Porto Portugal.
RSC Adv. 2025 Jan 23;15(4):2275-2286. doi: 10.1039/d4ra07121b.
Additive Manufacturing (AM) was evaluated as a promising technology for constructing photocatalytic reactors due to its inherent ability to produce complex geometries with high precision and customization. In this work, a 3D structure was designed to achieve a good light distribution inside a cylindrical batch reactor and printed using the stereolithography (SLA) technique. A hybrid material composed of a commercial photoreactive resin (Formlabs Clear V4) and the benchmark photocatalyst TiO P25 Evonik (1 wt%) was prepared and characterized by scanning electron microscopy (SEM) and rheological and mechanical methods. To evaluate the photocatalytic activity of the materials, several experiments on the photocatalytic degradation of Rhodamine B (Rh) were carried out using the 3D printed structure. Its performance was assessed by monitoring the concentration at specific times. Overall, the results demonstrate a simple, cost-effective, and fast technique to immobilize catalysts used in photocatalytic applications.
增材制造（AM）因其具有以高精度和定制化生产复杂几何形状的固有能力，被评估为构建光催化反应器的一项有前景的技术。在这项工作中，设计了一种三维结构，以在圆柱形间歇式反应器内实现良好的光分布，并使用立体光刻（SLA）技术进行打印。制备了一种由商用光反应性树脂（Formlabs Clear V4）和基准光催化剂赢创德固赛P25二氧化钛（1 wt%）组成的混合材料，并通过扫描电子显微镜（SEM）以及流变学和力学方法对其进行了表征。为了评估材料的光催化活性，使用3D打印结构对罗丹明B（Rh）的光催化降解进行了多项实验。通过监测特定时间的浓度来评估其性能。总体而言，结果证明了一种用于固定光催化应用中所用催化剂的简单、经济高效且快速的技术。
