Catalytic Degradation of Methylene Blue by Fenton-like Oxidation of Ce-doped MOF

Fenton catalytic oxidation is an efficient and green method to remove pollutants, and the preparation of Fenton catalyst by MOF is a significant task. In this work, Ce-doped UiO-67-400 was successfully synthesized by introducing cerium into zirconium based UiO-67 skeleton by one-step hydrothermal synthesis approach followed by calcination at high temperature. The as-prepared samples were characterized by using the SEM, TEM, XRD, FT-IR, XPS and N-2 adsorption-desorption techniques. The synthesized materials were used as catalyst in the Fenton-like oxidation of methylene blue model reaction with H2O2 as an oxidant. The experimental results of the catalyst showed that the Ce-doped UiO-67-400 catalyst calcined at 400 degrees C has a larger pore size, which is conducive to H2O2 decomposition and OH catalysis of methylene blue as compared to non-doped one. Under the optimal conditions, methylene blue removal rate reached 94.1 % within 30 min. We hope that the results of the present work could play a significant role in the waste water treatment research avenue.

Automated summary

The Ce-doped UiO-67-400 catalyst was successfully synthesized and used for Fenton-like oxidation of methylene blue, showing a larger pore size and higher removal efficiency compared to non-doped catalyst. The results hold promise for potential applications in wastewater treatment research.