Preparation of Ce-UiO-66-NH2/TiO2/PANI Composite and Photocatalytic Degradation of RhB

The Ce-UiO-66-NH 2 material was successfully prepared by oil bath method, and TiO 2 and PANI were compounded on the basis of it, which improved the degradation efficiency of rhodamine B (RhB). XRD, TEM, and XPS characterization confirmed that the composite material formed a core-shell structure and polyaniline was uniformly coated. The composite with 20 μL aniline and CTAB surfactant showed the highest degradation efficiency, and the degradation rate of RhB reached 99.90% within 60 min under ultraviolet light irradiation. The band alignment and free radical trapping experiments show that it follows the ternary Z-type heterojunction mechanism, \( \bullet {\kern 1pt} {\text{O}}_{2}^{ - }\) is the main active species. It provides a new idea for the design of high-performance photocatalysts and is of great significance for promoting the application of photocatalytic technology in water pollution control.