Issue 39, 2017, Issue in Progress

Facile synthesis of Fe3O4/MIL-101 nanocomposite as an efficient heterogeneous catalyst for degradation of pollutants in Fenton-like system

Abstract

An active Fe3O4/MIL-101 hybrid material was prepared via a simple in situ solvothermal method and characterized as a heterogeneous Fenton-like catalyst for Rhodamine B (RhB) degradation. The Fe3O4/MIL-101 exhibited enhanced catalytic performance for RhB degradation in a neutral solution. Under optimized conditions, almost 100% removal of 10 mg L−1 RhB was achieved in 30 min using 0.5 g L−1 Fe3O4/MIL-101 and 20 mM H2O2 at initial pH 7. The reusability of Fe3O4/MIL-101 was also investigated after four runs. On the basis of the characterization of the catalyst, the results of metal leaching, the effects of radical scavengers, and hydroxyl radical (˙OH) determination, it was concluded that RhB is decomposed mainly by the attack of the hydroxyl radical (˙OH), generated by the reaction of Fe2+ species with H2O2. MIL-101 showed a significant synergistic effect with Fe3O4, in which it played the role of a solid-acid catalyst with Lewis acid sites on its surface, ensuring that a Fenton-like reaction occurred in the neutral solution.

Graphical abstract: Facile synthesis of Fe3O4/MIL-101 nanocomposite as an efficient heterogeneous catalyst for degradation of pollutants in Fenton-like system

Article information

Article type
Paper
Submitted
15 Feb 2017
Accepted
27 Apr 2017
First published
05 May 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 24453-24461

Facile synthesis of Fe3O4/MIL-101 nanocomposite as an efficient heterogeneous catalyst for degradation of pollutants in Fenton-like system

C. Zhao, P. Dong, Z. Liu, G. Wu, S. Wang, Y. Wang and F. Liu, RSC Adv., 2017, 7, 24453 DOI: 10.1039/C7RA01883E

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