Preparation of a fullerene[60]-iron oxide complex for the photo-fenton degradation of organic contaminants under visible-light irradiation

doi:10.1016/S1872-2067(18)63067-0

Abstract

Abstract:

Iron oxide (Fe₂O₃) was doped onto fullerene[60] (C₆₀) to form a C₆₀-Fe₂O₃ composite using an easy and scalable impregnation method. The as-prepared C₆₀-Fe₂O₃ samples were characterized by powder X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, high-resolution transmission electron microscopy, UV-vis absorption spectroscopy, Raman spectroscopy, and Fourier transform infrared spectroscopy. The photocatalytic activity of the C₆₀-Fe₂O₃ catalyst was evaluated by examining the degradation of methylene blue (MB), rhodamine B (RhB), methyl orange (MO), and phenol under visible light (λ > 420 nm) in the presence of hydrogen peroxide. The results showed that the catalyst exhibited excellent catalytic properties over a wide pH range 3.06-10.34. Under optimal conditions, 98.9% discoloration and 71% mineralization of MB were achieved in 80 min. Leaching test results indicated that the leaching of iron from the catalyst was negligible and that the catalyst had a high photocatalytic activity after five reaction cycles. The catalyst was also efficient in the degradation of RhB, MO, and phenol. These findings could be attributed to the synergetic effects of C₆₀ and Fe₂O₃. We used active species trapping experiments to determine the main active oxidant in the photocatalytic reaction process and found that hydroxyl radicals played a major role in the entire process.

Key words: C₆₀-Fe₂O₃, Heterogeneous photocatalysis, Photo-Fenton, Visible light, Active species trapping

Cong-yang Zou, Ze-da Meng, Wen-chao Ji, Shou-qing Liu, Zhemin Shen, Yuan Zhang, Ni-shan Jiang. Preparation of a fullerene[60]-iron oxide complex for the photo-fenton degradation of organic contaminants under visible-light irradiation[J]. Chinese Journal of Catalysis, 2018, 39(6): 1051-1059.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(18)63067-0

https://www.cjcatal.com/EN/Y2018/V39/I6/1051

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