Abstract
Highly efficient and reusable Sr4Al14O25: Eu2+, Dy3+@ZnO nanocomposites were developed for the photocatalysis of toxic pollutants from aqueous systems. The structural, photophysical and photocatalytic properties of the materials were investigated by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray, and photoluminescence spectroscopy. The synergistic effects between persistent luminescent Sr4Al14O25: Eu2+, Dy3+ phosphor and ZnO significantly enhanced the photocatalytic efficiencies of the composites where the phosphor performed as nano-illumination sources to activate ZnO in situ. The composite system degraded aqueous methyl orange in less than 1 h under UV–Visible irradiation. The materials developed are environment friendly, cost effective, highly efficient and reusable making them powerful candidates for industrial waste water remediation.
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