Photocatalytic performance of chitosan tethered magnetic FeO-like (3D/2D) hybrid for the dynamic removal of anionic dyes: Degradation and mechanistic pathways.

Efficient photocatalysis methods with a production of less number of toxic intermediates are extremely advantageous for water decontamination. The degradation efficiency, specific surface area, stability and porosity will be improving by wrapping of FeO using appropriate biopolymers. In this work, FeO reinforced chitosan (FeO@CS) nanocomposite was fabricated using co-precipitation method. The chitosan makes available its surface for the useful generation of the nanocomposite. These wrapping of FeO on chitosan provides synergistically improved properties that could be attributed to the elevated partition efficiency and faster transfer of the photo-generated charge carriers, which was substantiated by the experimental outcomes from photoluminescence and ESR spectroscopy. The results obtained from DRS analysis entail the reduction in band gap of FeO@CS (2.52 eV) as compared with 3.52 eV of FeO. The results indicated that 89.2% and 94.6% were the maximum degradations correspondingly for MO and OG. The trapping investigation emphasized the involvement of OH radicals in the degradation of dyes over FeO@CS composites. The five cycles of regeneration experiment recommended the superior photostability of the fabricated FeO@CS composite. This work proposed a practical arrangement and subsequent influence of an advanced photocatalyst for the useful remediation dyes from contaminated water without causing any secondary pollution.