PBA-derived magnetic CoS2/FeS anchored on CNTs as a robust and recyclable fenton-like catalyst for enhanced RhB degradation

In the context of escalating global environmental concerns, the pursuit of highly efficient photocatalysts has emerged as a prominent research focus. In this study, PBA-derived CoS₂/FeS was anchored to b-CNTs through hydrothermal and calcination techniques to serve as a Photo-Fenton-like catalyst. The CoS 2 /FeS/b-CNTs exhibited remarkable photocatalytic Fenton activity. Under xenon lamp irradiation, an impressive degradation efficiency of 97% for RhB was achieved within a mere 210 s, concomitantly exhibiting extensive adaptability across a wide pH range of pollutant solutions. Even after three consecutive cycles and magnetic recovery separation procedures, the degradation efficiency of RhB still remains at a high degradation efficiency of 94.6%. Free radical capture experiments unambiguously indicated that singlet oxygen ( 1 O 2 ) and hydroxyl radicals (•OH) played pivotal roles as the principal active species during the degradation process. This research not only pioneers a novel avenue for the design of PBA-derived layered nanostructured photocatalysts but also holds significant potential for future applications in Photo-Fenton-like degradation of recalcitrant organic pollutants, heralding a new era in environmental remediation technology.