Facile sonochemical route to sponge-like porous AgCl/malachite for enhanced photocatalytic performance and stability

, which is 39.4 times higher than that of pure Malachite and 1.9 times greater than pure AgCl. Importantly, the photocatalytic performance shows no significant degradation after five consecutive cycles. The enhanced performance is attributed to the following factors: the formed heterojunction between AgCl and Malachite effectively promotes the separation and transfer of photogenerated charge carriers. The hierarchical porous structure and high specific surface area optimize mass transfer during the reaction and provide abundant active sites. Moreover, the composite architecture significantly suppresses the photochemical corrosion of AgCl. This work not only offers a new approach to mitigating the photochemical corrosion of silver-based materials for developing highly efficient and stable photocatalysts, but also provides a fast and controllable sonochemical route for the scalable synthesis of functional heterojunction materials with potential for industrial production.