Novel CdPdS/PVAc core–shell nanofibers as an effective photocatalyst for organic pollutants degradation

Photocorrosion and toxicity are the main constraints facing wide application of the CdS-based nanomaterials. In this study, CdS/PdS alloy is introduced as a core inside poly(vinyl acetate) (PVAc) nanofibers as a novel, efficient, reusable and easily recyclable photocatalyst. The core–shell structure was achieved using simple, effective and high yield technique: electrospinning. Typically, the CdS/PdS alloy was synthesized inside the polymer solution using cadmium acetate dihydrate, palladium acetate and ammonium sulfide precursors. Electrospinning of the obtained colloidal solution led to produce core–shell structure due to resultant water from formation of CdS/PdS reactions. The utilized physiochemical characterizations affirmed formation of the CdS/PdS alloy as well as the core–shell morphology. The obtained CdPdS–PVAc electrospun nanofibers exhibit good photocatalytic performance toward dye degradation. Two azo dyes, Reactive black 5 (RB5) and Reactive Orange 16 (RO16), were completely eliminated within very short time. Moreover, the photocatalytic efficiency was not affected after three consecutive cycles for both dyes. This solar-light-driven reusable CdPdS–PVAc hybrid mat photocatalyst can be easily applied for industrial application, especially in the open water surface.

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► One step synthesis of PVAc/CdPdS core–shell structure via e-spin.
► Solar light photocatalyst.
► Secondary pollution resolved and long term reusability.
► Photo corrosion dilemma solved.
► Open water usability.