A Massively Preparable, Flexible and Efficient Photocatalytic System for H₂ Production from Water: Cd0.5Zn0.5S/SrWO₄ Nanoparticles Porous Film Fabricated on Ti Plate

The commercialization of photocatalytic H2 production technology hinges on the cost-effective and scalable fabrication of efficient photocatalytic systems suitable for continuous production and easy recycling. Here, we employed a simple screen-printing process followed by heat treatment to fabricate Cd0.5Zn0.5S/SrWO4 nanoparticles porous films on Ti plates. The resulting photocatalytic system was then evaluated for H2 production in a simulated fixed-bed reactor. The outcomes underscore the successful development of an efficient photocatalytic system, poised for application in continuous flow setups and remarkable recyclability. Impressively, under visible irradiation, the system exhibited a max H2 evolution rate of 133.1 mL m–2 h–1. Furthermore, it demonstrated noticeable flexibility, robust mechanical stability, and remarkable adaptability, making it convenient for use on nonplanar reaction beds. The fabrication process reported here is not only simple but also cost-effective, allowing for easy scalability. Our batch production using this technology yields products with high quality stability. These findings unveil a pioneering technical pathway for the large-scale and cost-effective production of high-performance photocatalytic systems, primed for continuous H2 production in the future.