Visible-light driven degradation of tetracycline and ciprofloxacin using a Z-scheme FeS₂@polythiophene heterostructure photocatalyst.

IF 6.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanoscale Advances Pub Date : 2026-09-14 DOI:10.1039/d6na00587j

Maruthasalam Pannerselvam, Vadivel Siva, Abdul Samad Shameem, Anbazhagan Murugan, Krishnasamy Padmavathi, Murugan Dineshkumar, Shaik Gouse Peera

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引用次数: 0

Abstract

The development of efficient and reusable visible-light-driven photocatalysts is essential for the sustainable removal of emerging pharmaceutical contaminants from wastewater. In this study, a FeS₂@polythiophene (FeS₂@PTh) heterostructure has been synthesized using a simple in situ chemical oxidative polymerization method. The synthesized FeS₂@PTh was used as a visible-responsive photocatalyst for the degradation of tetracycline (TC) and ciprofloxacin (CIP) from an aqueous medium. XPS analysis confirmed the existence of Fe²⁺, Fe³⁺, and S 2p species, with a significant interface between the FeS₂ and PTh systems. FeS₂@PTh exhibited higher degradation performance, removing 83% of TC (k = 1.422 × 10^-2 min^-1) and 85% of CIP (k = 1.687 × 10^-2 min^-1) under visible-light irradiation. Moreover, this study highlighted the excellent photostability and reproducibility of the photocatalysts, contributing to the development of sustainable photocatalytic materials for efficient water treatment.