Abstract
In the present work, single crystalline octahedral Zn-doped Fe3O4 was prepared through a simple hydrothermal method and then analyzed. The possible mechanism for the formation of Zn-doped Fe3O4 octahedrons is discussed. Their photo-Fenton activity in photodegradation of Rhodamine B under visible light was sequentially investigated. The physicochemical properties of prepared ferrites were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). The analysis of the results showed that synthesized products are uniform Zn-doped Fe3O4 octahedrons with high crystallinity. The experimental results manifested that Ostwald ripening processes and N2H4∙H2O amount plays an important role in the formation of the octahedrons. Also, octahedral Zn-doped Fe3O4 exhibited high photocatalytic capacity for dye degradation. • Zn-doped Fe3O4 octahedral-shaped were prepared by solvothermal method. • Ostwald ripening and N2H4.H2O play the important role in the formation of octahedral photocatalyst. • The catalysts exhibit high photo-Fenton activity. • Rhodamine degradation showed no significant change during four successive cycles.
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