Three-dimensional (3D) printing has recently been introduced into the field of chemistry as an enabling tool employed to perform reactions, but so far, its use has been limited due to material and structural constraints. We have developed a new approach for fabricating 3D catalysts with high-complexity features for chemical reactions via digital light processing printing (DLP). PtO2-WO3 heterogeneous catalysts with complex shapes were directly fabricated from a clear solution, composed of photo-curable organic monomers, photoinitiators, and metallic salts. The 3D-printed catalysts were tested for the hydrogenation of alkynes and nitrobenzene, and displayed excellent reactivity in these catalytic transformations. Furthermore, to demonstrate the versatility of this approach and prove the concept of multifunctional reactors, a tungsten oxide-based tube consisting of three orderly sections containing platinum, rhodium, and palladium was 3D printed.
Bibliographical noteFunding Information:
Acknowledgments: We thank the Israel Ministry of Science and Technology for the partial financial support. X.W. gives thanks for the financial support from CSC, the Chinese Scholarship Council of the Ministry of Education, China. We also thank Sartomer-Arkema and their agent in Israel, Eltra, for providing the PEGDA sample.
Funding: This research was funded by joint funding of The Hebrew University (HU) and Central South University (CSU), HUCNN-CSU-2019, and by the Israel Ministry of Science and Technology.
© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
- 3D printing
- Chemical reaction
- Digital light processing
- Multi-catalytic species