Construction of a novel Z-scheme FeTiO3/MOF-derived In2S3 catalyst for visible-light-driven photo-Fenton degradation of pollutants
Source abstract
Abstract
The rapid recombination rate of photoexcited carriers for iron titanate (FeTiO 3) is still limited the process performance of photo-Fenton. This article reports the successful synthesis of the highly efficient Z-scheme FeTiO 3/MOF-derived In 2S 3 photocatalyst using the hydrothermal method, compensating for the susceptibility of FeTiO 3 photo-generated carriers to complexation to a certain extent. A series of characterization have been carried out to explore the structure, morphology and composition of FeTiO 3/MOF-derived In 2S 3 heterostructure. The 0.5 FeTiO 3/MOF-derived In 2S 3 exhibits the excellent photo-Fenton performance for TCH, Cr 6+ and OTC, the degradation rate constants (k 2) are up to 0.6297 L·mg −1·min −1, 1.332 L·mg −1·min −1, and 0.427 L·mg −1·min −1, respectively. Active species capture experiments and electron paramagnetic resonance (EPR) spectra show that photo-generated holes (h +) and superoxide radicals (·O 2 -) are present in the photo-Fenton system. The superior photo-Fenton performance is mainly manifested in the following: the MOF-derived In 2S 3 micro-floral carrier extends the reaction interface of 0.5 FM-I; FeTiO 3 effectively enhances the photo-absorption ability of 0.5 FM-I in visible range; the construction of Z-scheme FeTiO 3/MOF-derived In 2S 3, forming the new carriers transport channels and enhancing the generation of ·O 2 - and ·OH. This experimental exploration provided a reasonable experimental basis for the preparation of efficient photocatalysts.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced oxidation water treatment · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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