Chong Li
In this study, nanoflake-structured MoS2 (MoS2 NSs) was successfully prepared via a one-step hydrothermal method. The as-synthesized MoS2 NSs shows a hollow rod-like morphology with enlarged interlayer spacing and abundant lattice dislocations, which can effectively improve the number of active sites and electron transport efficiency through dislocation synergistic effect. MoS2 NSs exhibits excellent catalytic performance for peroxymonosulfate (PMS) activation to degrade tetracycline hydrochloride (TCH). Under optimal conditions (pH=3), the degradation efficiency of TCH reaches over 95% within 60 min. The system remains efficient and stable under a wide pH range and in the presence of common inorganic anions. Radical quenching experiments verify that TCH degradation is dominated by multiple reactive oxygen species including ·OH, SO4•?, O2•?, and ¹O2. MoS2 NSs possesses good reusability and stability, providing a feasible strategy for efficient treatment of antibiotic wastewater.
MoS2; Fenton-like; peroxymonosulfate; tetracycline hydrochloride