Work

Heterogeneous catalytic degradation of ciprofloxacin with FeS micro-flakes

Year: 2025

Type: article

Abstract: The common water contaminant ciprofloxacin (CIP) poses a significant threat to the health of both aquatic species and humans. Current iron-sulfide-based catalysts, predominantly nanoparticles, face limitations including aqueous instability, narrow pH adaptability, and agglomeration. To overcome these bottlenecks, we developed a new iron-sulfide-based catalyst. This study used FeS micro-flakes to degrade CIP. The degradation efficiency and reusability of FeS micro-flakes were evaluated under different conditions. The results indicate that FeS micro-flakes can achieve a removal efficiency of over 99 % within 10 min at pH 6, a temperature of 30 °C, a FeS dosage of 0.8 g/L, and an H 2 O 2 concentration of 10 mmol/L. even after five cycles, the removal efficiency of FeS remained above 99 %. The hydroxyl radical (HO·) was identified as the primary reactive oxygen species (ROS) by chemical quenching experiments and electron paramagnetic resonance (EPR). These results demonstrate the exceptional performance and reusability of the FeS heterogeneous Fenton catalyst

Source: Results in Chemistry

DOI: 10.1016/j.rechem.2025.102384

Authors: Shaoming Zeng, Xiaofang Lai, Hai Li, Rongtao Ji, Duan Zhao, Jikang Jian

Institution: Guangdong University of Technology

Language: English

Topic: Advanced oxidation water treatment

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $1,870