Imprinted Carbon Layer Modified Hollow CdS@Fe3O4 Heterojunction: Inhibition of Photocorrosion and Selective Removal of Enrofloxacin Hydrochloride

Herein, this study focused on the development of a hollow CdS@Fe 3 O 4 material modified by an imprinted carbon layer (imprinted C@CdS@Fe 3 O 4 ), aiming at selective photocatalytic degradation of enrofloxacin hydrochloride (ENR) while overcoming photocorrosion of CdS. The imprinted carbon layer coated on the surface of CdS@Fe 3 O 4 was optimized by adjusting the amounts of glucose and template molecules, so that the imprinted C@CdS@Fe 3 O 4 has the best performance of degrading ENR. Experimental results demonstrate that the imprinted carbon layer effectively prevents photocorrosion, significantly improving the stability of CdS, and reducing Cd[Formula: see text] leaching. Furthermore, the imprinted carbon layer enhances the selectivity of the composite for ENR degradation, as the imprinted sites selectively interact with the target pollutant. The introduction of a hollow Fe 3 O 4 substrate is used to construct a heterojunction with CdS, improve charge separation efficiency and facilitate material recovery. This work provided a viable strategy for improving the stability, selectivity, and recyclability of photocatalysts, offering a sustainable solution for the removal of pharmaceutical pollutants from the environment.