Preparation of SrTiO3/PANI Composites and Photocatalytic Degradation of RhB

The synthesized SrTiO 3 /PANI composite materials through a simple in situ oxidation process. A series of analytical techniques, including XRD, FT-IR, SEM, TEM, XPS and so on, were employed to investigate the morphological and structural characteristics of the composite materials and their elemental composition. The results of the UV irradiation of RhB demonstrated that pure SrTiO 3 exhibited a degradation rate of 73.35% within 60 min. The SrTiO 3 /PANI (20%) composite exhibited a 98.18% degradation rate in 60 min, indicating the optimal conditions for photocatalytic degradation of RhB. The free radical scavenging experiment demonstrated that superoxide anion ( \( \cdot {\kern 1pt} {\text{O}}_{2}^{ - }\) ) is the dominant active species, the photocatalytic mechanism of Type-Z heterojunction was described in detail according to the band gap and free radical capture experiments of SrTiO 3 and PANI.