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A highly selective conversion of toxic nitrobenzene to nontoxic aminobenzene by Cu2O/Bi/Bi2MoO6

Abstract

Cu2O/Bi/Bi2MoO6, a ternary catalyst, was masterly prepared by an in situ catalytic reduction reaction. All synthetic materials were carefully researched by high-resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and ultraviolet-visible diffuse reflection spectra (UV-vis DRS). The elemental Bi was generated from Bi2MoO6 after the circular reduction catalysis process of 4-nitrophenol (4-NP) and evenly dispersed in the surface of the leaves of Bi2MoO6 follower-like spheres, which was coated by Cu2O simultaneously. The multiphase samples achieved highly effective catalytic activity (10053.6 min−1 g−1) for the conversion of the high toxic 4-NP to less toxic aminobenzene, compared to the single phase Cu2O and Bi2MoO6 nanoparticles. Moreover, the excellent reusable stability of the compositing samples were confirmed by executing the successive recycling experiments. It was supposed the Bi3+/Bi0 pairs were the key active species which were produced via the prompt reduction and oxidation with the help of Cu2O. The active interfacial contact between copper oxide/metallic Bi/ Bi2MoO6 (Cu2O/Bi/Bi2MoO6) in the designed sandwich structure facilitated to produce and maintain the balance of Bi3+/Bi0 pairs, contributing to the enhanced activity and excellent stability.

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Supplementary files

Publication details

The article was received on 18 Apr 2018, accepted on 10 Jun 2018 and first published on 12 Jun 2018


Article type: Paper
DOI: 10.1039/C8DT01536H
Citation: Dalton Trans., 2018, Accepted Manuscript
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    A highly selective conversion of toxic nitrobenzene to nontoxic aminobenzene by Cu2O/Bi/Bi2MoO6

    Y. Wu, M. Song, Q. Wang, T. Wang and X. Wang, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT01536H

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