Design and synthesis of ?-Fe2O3/MIL-53(Fe) composite as a photo-Fenton catalyst for efficient degradation of tetracycline hydrochloride
In this study, the ?-Fe2O3/MIL-53(Fe) composite was successfully designed and developed through a solvothermal method as a photo-Fenton catalyst and for the degradation of tetracycline hydrochloride (TC-HCl). The results show that the prepared composite exhibits superb performance for the degradation of TC-HCl ascribing to the synergistic effect between MIL-53(Fe) and ?-Fe2O3. And the formation of heterojunction structure is beneficial to reducing the band gap, enhancing the absorption of visible light, and improving the separation and transportation of photo-induced carriers. Moreover, this heterojunction structure can be formed without annealing treatment. The effects of pH, H2O2 consumption and catalyst dosage on the degradation of TC-HCl are also investigated. The optimum conditions for target pollutant degradation were investigated according to the response surface methodology (RSM) result based on a central composite design (CCD). A possible mechanism of degradation of TC-HCl is proposed according to the main active radical that existed in the reaction process. This work provides a novelty perspective and in-depth and independent insight for the photo-Fenton mechanism of heterojunction structure modified MOFs material.
» Author: Tong Zhang, Xiaojun Guo, Hebing Pei, Fei Zha, Xiaohua Tang, Haifeng Tian, Ruibin Guo, Nijuan Liu, Zunli Mo
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737