Photo-Fenton Degradation of RhB over Nano-fibre Iron Oxides Interacted Montmorillonite under Visible Light Irradiation

doi:10.3724/SP.J.1088.2012.20756

Abstract

Abstract: Trinuclear Fe(III) acetate complex intercalated montmorillonite Fenton catalysts were successfully prepared by a facile ion exchange process. The obtained catalysts were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Ultraviolet-visible (UV-Vis) diffuse reflectance spectroscopy, X-ray absorption fine structure, and inductively coupled plasma-atomic emission spectrometry. The results showed that the montmorillonite’s surface area was greatly increased after the trinuclear iron cluster intercalated. A few amorphous nano-fibre iron oxides were anchored on the surface of the catalyst. The prepared catalyst exhibited high efficiencies for the degradation and mineralization of rhodamine B in the presence of H₂O₂ under visible light irradiation. Furthermore, the main active species in catalytic reaction process have been investigated. Based on the experimental results, a possible mechanism was discussed and proposed.

Key words: montmorillonite, nano-fibre, photo-Fenton, degradation, visible light, iron oxide, rhodamine B

ZHANG Shi-Long, HU Xiao-Ming, WANG Xiao-Wei, LIANG Shi-Jing, WU Leng. Photo-Fenton Degradation of RhB over Nano-fibre Iron Oxides Interacted Montmorillonite under Visible Light Irradiation[J]. Chinese Journal of Catalysis, 2012, 33(10): 1736-1741.

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URL: https://www.cjcatal.com/EN/10.3724/SP.J.1088.2012.20756

https://www.cjcatal.com/EN/Y2012/V33/I10/1736

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