Novel Magnetically Hollowsphere Zn-Doped Magnetite for the Efficient Photo-Reduction of Cr(VI)

Sang Nguyen; Phuong; Tung Vo

doi:10.51316/jca.2020.004

Authors

Nguyen Xuan Sang Viet Nam Maritime University Author
Phuong Hanoi University of Science and Technology Author
Vo Hoang Tung Viet Nam Maritime University Author

DOI:

https://doi.org/10.51316/jca.2020.004

Keywords:

Zn-doped Fe3O4, hexavalent chromium, hollowsphere, photo-reduction reaction

Abstract

Uniform and magnetic recyclable hollowsphere Zn doped Fe₃O₄ were successfully synthesized via simple one-pot solvothermal route. Morphology and structure of as-obtained products was characterized by XRD, SEM, HRTEM methods. The Zn-doped Fe₃O₄ hollowsphere exhibited high photocatalytic activity for degradation of hexavalent chromium under visible light irradiation. The effects of reaction conditions such as initial pH, photocatalyst dosage and hexavalent chromium contratentation were also studied systematically. The stability of the catalysts and and possible catalytic mechanism was also proposed. The results indicate that Zn doped Fe₃O₄ can be promising catalyst for photo-reduction of hexavalent chromium.

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