▎ 摘　　要

A novel 3D alpha-FeOOH@MoS2/rGO nanocomposite was successfully fabricated by a simple in situ hydrothermal method. It is a highly efficient heterogeneous catalyst in activation of peroxymonosulfate (PMS) for rapid degradation of rhodamine B (RhB), with 99.9% of RhB removed within 20 min. The introduction of rGO con-tributes to uniform dispersion and sufficient contact of alpha-FeOOH and MoS2 nanosheets. Highly active Mo(IV) enhances the reduction of Fe(III), improves Fe(III)/Fe(II) conversion and promotes the generation of 1O2 , which ensures an improved catalytic activity. MoS2/rGO hybrid can effectively solve the problem of material reunion and make alpha-FeOOH exhibit excellent catalytic performance. The alpha-FeOOH@MoS2-rGO/PMS system is a co -catalytic system based on the active components of alpha-FeOOH and MoS2. The main reactive oxygen species in the alpha-FeOOH@MoS2-rGO/PMS system are 1O2 , SO. 4 and .OZ, which contribute to a high reactivity over a wide range of pH (5-9). Besides, this system is highly resistant to anions (Cl- , SO24) and natural organic matter (humic acid), and can be widely used for degradation of common organic pollutants. The alpha-FeOOH@MoS2/rGO is a promising Fenton-like catalyst for refractory organic wastewater treatment.