1. FeVO4 as a highly active heterogeneous Fenton-like catalyst towards the degradation of Orange II
- Author
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Deng, Jingheng, Jiang, Jingyuan, Zhang, Yuanyuan, Lin, Xiaoping, Du, Changming, and Xiong, Ya
- Subjects
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IRON , *X-ray diffraction , *CATALYSIS , *PHOTOELECTRON spectroscopy - Abstract
Abstract: The iron vanadate, FeVO4, was prepared and characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) surface area, X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM). It was found that FeVO4 could effectively catalyze H2O2 to generate active hydroxyl radical was confirmed with electron spin resonance (ESR) spin-trapping technique. Therefore, it was employed as a heterogeneous Fenton-like catalyst in the present contribution, and its catalytic activity was mainly evaluated in terms of the degradation efficiency of Orange II. Compared with the conventional heterogeneous Fenton-like catalysts, α-Fe2O3, Fe3O4 and γ-FeOOH, FeVO4 possessed a much higher catalytic activity. The high catalytic activity possibly involved in a special two-way Fenton-like mechanism, that is, the activation of H2O2 by both Fe(III) and V(V) in FeVO4. Moreover, FeVO4 possessed a wide applicable pH range and its catalytic activity was slightly affected by the solution pH values in the range of 3–8. [Copyright &y& Elsevier]
- Published
- 2008
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