Steel Mesh-Supported CsPbBr₃/SNW-1 Nanocomposite: Photocatalyst for Sustainable Ammonia Production

In this study, a novel metal halide perovskite/covalent organic framework (MHP/COF) nanocomposite, specifically CsPbBr 3 /SNW-1, was successfully synthesized on a stainless-steel mesh using an innovative in situ fabrication strategy. This approach enabled the uniform integration of CsPbBr 3 within the SNW-1 framework, enhancing photocatalytic nitrogen fixation efficiency under visible light irradiation. A remarkable NH 3 production rate of 1432 μmol g –1 h –1 was achieved for a 2 × 2 stainless-steel mesh, surpassing the performance of individual components. The enhanced activity is attributed to the improved light absorption capability, efficient charge separation facilitated by the COF structure, and the presence of abundant active sites within the nanocomposite. Furthermore, excellent stability and reusability were demonstrated over multiple cycles, confirming the robustness of the material. These findings highlight the potential of CsPbBr 3 /SNW-1/mesh as a promising and sustainable photocatalyst for green ammonia production and provide valuable insights into the rational design of hybrid COF/MHP nanocomposites for photocatalytic applications.