Surfactant‐Free Microwave‐Assisted Synthesis of Fe‐Doped ZnO Nanostars as Photocatalyst for Degradation of Tropaeolin O in Water under Visible Light

W1482198854 · 수집 2026-10-04 18:12:13

T11472 Analytical Chemistry and Sensors

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Iron‐doped zinc oxide nanostar was synthesized by the microwave‐assisted surfactant‐free hydrolysis method. The as‐synthesized Fe‐doped ZnO nanostars catalyst was fully characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), energy dispersive X‐ray spectroscopy (EDX), powder X‐ray diffraction (XRD), and diffuse reflectance UV‐vis spectroscopy (UV‐DRA). The photocatalytic activity of the photocatalyst was investigated for the photocatalytic degradation of Tropaeolin O under visible light irradiation. It is observed that the doping of Fe ions enhances the absorption of the visible light and thus the photocatalytic degradation rate of Tropaeolin O would increase. Despite the Taguchi orthogonal experimental design method, the photocatalytic conversion could be achieved at 99.8% in the Fe‐doped ZnO catalyzed photodegradation reaction under the optimal reaction conditions of catalyst loading (30 mg), temperature (60°C), light distance (0 cm), initial pH (pH = 9), and irradiation time (3 h). The Fe‐doped ZnO photocatalyst can also be easily recovered and directly reused for eight cycles with over 70% conversion.

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