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Title: Surfactant-Free microwave-assisted synthesis of Fe-doped ZnO nanostars as photocatalyst for degradation of Tropaeolin O in water under visible light
Authors: Kwong, TL 
Yung, KF 
Issue Date: 2015
Publisher: Hindawi Publishing Corporation
Source: Journal of nanomaterials, 2015, v. 2015, 190747 How to cite?
Journal: Journal of Nanomaterials 
Abstract: 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.
ISSN: 1687-4110
EISSN: 1687-4129
DOI: 10.1155/2015/190747
Rights: Copyright © 2015 Tsz-Lung Kwong and Ka-Fu Yung. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The following article: Kwong, T. L., & Yung, K. F. (2015). Surfactant-Free microwave-assisted synthesis of Fe-doped ZnO nanostars as photocatalyst for degradation of tropaeolin o in water under visible light. Journal of Nanomaterials, 16(1), 199, is available at https//
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