Issue 3, 2015

Multifunctional Au-Fe3O4@MOF core–shell nanocomposite catalysts with controllable reactivity and magnetic recyclability

Abstract

The recovery and reuse of expensive catalysts are important in both heterogeneous and homogeneous catalysis due to economic and environmental reasons. This work reports a novel multifunctional magnetic core–shell gold catalyst which can be easily prepared and shows remarkable catalytic properties in the reduction of 4-nitrophenol. The novel Au-Fe3O4@metal–organic framework (MOF) catalyst consists of a superparamagnetic Au-Fe3O4 core and a porous MOF shell with controllable thickness. Small Au nanoparticles (NPs) of 3–5 nm are mainly sandwiched between the Fe3O4 core and the porous MOF shell. Catalytic studies show that the core–shell structured Au-Fe3O4@MOF catalyst has a much higher catalytic activity than other reported Au-based catalysts toward the reduction of 4-nitrophenol. Moreover, this catalyst can be easily recycled due to the presence of the superparamagnetic core. Therefore, compared to conventional catalysts used in the reduction of 4-nitrophenol, this porous MOF-based magnetic catalyst is green, cheap and promising for industrial applications.

Graphical abstract: Multifunctional Au-Fe3O4@MOF core–shell nanocomposite catalysts with controllable reactivity and magnetic recyclability

Supplementary files

Article information

Article type
Paper
Submitted
17 Sep 2014
Accepted
24 Nov 2014
First published
28 Nov 2014

Nanoscale, 2015,7, 1201-1208

Author version available

Multifunctional Au-Fe3O4@MOF core–shell nanocomposite catalysts with controllable reactivity and magnetic recyclability

F. Ke, L. Wang and J. Zhu, Nanoscale, 2015, 7, 1201 DOI: 10.1039/C4NR05421K

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