Science for energy and environment., Journal Year: 2024, Volume and Issue: unknown, P. 9 - 9

Published: Nov. 15, 2024

Article Enhanced Photo-Fenton Degradation of Antibiotics through Internal Electric Field Formation at the Interface Mixed-Phase FeS₂ Hongyan Liu 1,2, Yunhang Shao Shuai Dou 1,2 and Chengsi Pan 1,2,* 1 Key Laboratory Synthetic Biological Colloids, Ministry Education, School Chemical Material Engineering, Jiangnan University, Wuxi 214122, China 2 International Joint Research Center for Photoresponsive Molecules Materials, * Correspondence: [email protected] Received: 9 September 2024; Revised: October Accepted: 13 November Published: 15 2024 Abstract: Iron sulfide (FeS₂) is a rich mineral resource widely used as an efficient Fenton photo-Fenton reagent due to its non-toxicity low synthesis cost. However, mechanism underlying degradation activity related two crystal phases—pyrite (P-FeS₂) marcasite (M-FeS₂)—is still not well understood. In this study, P-FeS₂, M-FeS₂, their mixed phase (P/M-FeS₂) were prepared hydrothermal reactions. The results showed that P/M-FeS₂ exhibited highest activity, achieving removal rate approximately 99% 50 ppm ciprofloxacin (CIP) within 3 minutes, outperforming other catalysts in pollutant degradation. study revealed internal electric field (IEF) generated interface M-FeS₂ P-FeS₂ differing work functions. This IEF accelerates regeneration active sites (Fe²⁺ S₂²⁻-P-FeS₂ M-FeS₂) required reaction, thereby explaining superior phase. introduces theory first time explain mixed-phase reaction. formation can enhance involved improving both reaction stability. highlights significance regulating phases pollutants during heterogeneous reactions offers insights developing highly catalysts.

Language: Английский