A Fenton-like method using ZnO doped MIL-88A for degradation of methylene blue dyes

Abstract

MIL-88A with different sizes was prepared by hydrothermal method by changing the content of ZnO. The samples were characterized by SEM, TEM, XRD, XPS and FT-IR. The synthesized material was used for the removal of methylene blue dye in a Fenton-like reaction, and the optimal reaction conditions were studied through single factor experiments. The experimental results show that when the molar ratio of the amount of ZnO introduced to FeCl₃·6H₂O is 1 : 1, the obtained materials have better catalytic performance than others. Under the optimal conditions, MIL-88A(Fe₁Zn₁) has the best catalytic performance for 300 mg L⁻¹ methylene blue. The removal rate can reach 96.15% within 40 minutes.