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Iron-doped copper 1,4-benzenedicarboxylate as photo-Fenton catalyst for degradation of methylene blue

Authors: 

Thi Long Do, Thi Mong Thu Hoa, Van Dat Doan , Van Thuan Le and Nguyen Hoai Thuong

Source title: 
Toxicological and Environmental Chemistry, 101(1-2): 13-25, 2019 (ISI)
Academic year of acceptance: 
2018-2019
Abstract: 

A metal-organic framework of iron-doped copper 1,4-benzenedicarboxylate was synthesized and, for the first time, utilized as a heterogeneous photo-Fenton catalyst for degradation of methylene blue dye in aqueous solution under visible light irradiation. The synthesized materials were characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction and energy-dispersive X-ray spectroscopy. The influence factors, kinetics, and stability of the synthesized catalysts were investigated in detail. Iron-doped copper 1,4-benzenedicarboxylate showed higher degradation efficiency than pure copper 1,4-benzenedicarboxylate. An almost complete degradation was achieved within 70 min under visible light irradiation at a solution pH of 6, a catalyst loading of 1 g L−1, a H2O2 dosage of 0.05 mol L−1 and methylene blue concentration of 50 mg L−1. Recycling studies demonstrated that the iron-doped copper 1,4-benzenedicarboxylate is a promising heterogeneous photo-Fenton catalyst for long-term removal of methylene blue dye from industrial wastewater.