Amorphous Feooh on Low-Crystallinity Mil-125: A Rapid Pathway for Photo-Fenton Degradation of High-Concentration Tc-Hcl

Abstract

To facilitate the more efficient degradation of antibiotics, there is an urgent requirement for the development of catalysts characterized by facile synthesis, robust catalytic activity, and exceptional stability. In this study, we prepared low crystallinity MIL-125 by reducing the synthesis time and deposited amorphous FeOOH using a simple oil bath to construct a MIL-125-FeOOH (MF) composite catalyst. Optical properties and electrochemical properties yielded that 12MF with lower crystallinity showed excellent photoelectric response and electron-hole separation efficiency. In addition, the degradation experiments yielded that 12MF contains a large number of adsorption active sites and exhibits a superb photo-Fenton degradation efficiency for high concentrations of TC-HCl. This work provides economically feasible, easy-to-operate, and high-performance amorphous FeOOH-modified low-crystallization MIL-125 composite catalysts. It is of practical significance and feasibility to promote the degradation of antibiotics by photo-Fenton reaction in the future.

Keywords: amorphous FeOOH, Photo-Fenton process, low-crystallization MIL-125