Volume 33, Issue 9 e5059
FULL PAPER

Excellent photocatalytic reduction of nitroarenes to aminoarenes by BiVO4 nanoparticles grafted on reduced graphene oxide (rGO/BiVO4)

Roya Azad

Roya Azad

Department of Chemistry, Faculty of Basic Science, University of Mohaghegh Ardabili 179, Ardabil, Iran

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Abolfazl Bezaatpour

Corresponding Author

Abolfazl Bezaatpour

Department of Chemistry, Faculty of Basic Science, University of Mohaghegh Ardabili 179, Ardabil, Iran

Correspondence

Abolfazl Bezaatpour, Department of Chemistry, Faculty of Basic Science, University of Mohaghegh Ardabili 179, Ardabil, Iran.

Email: [email protected]

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Mandana Amiri

Mandana Amiri

Department of Chemistry, Faculty of Basic Science, University of Mohaghegh Ardabili 179, Ardabil, Iran

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Habibollah Eskandari

Habibollah Eskandari

Department of Chemistry, Faculty of Basic Science, University of Mohaghegh Ardabili 179, Ardabil, Iran

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Sima Nouhi

Sima Nouhi

Institute of Chemistry, Chemical Technology 1, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany

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Dereje H. Taffa

Dereje H. Taffa

Institute of Chemistry, Chemical Technology 1, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany

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Michael Wark

Michael Wark

Institute of Chemistry, Chemical Technology 1, Carl von Ossietzky University Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany

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Rabah Boukherroub

Rabah Boukherroub

Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France

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Sabine Szunerits

Sabine Szunerits

Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France

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First published: 20 June 2019
Citations: 27

Abstract

A novel heterogeneous composite material based on reduced graphene oxide (rGO) and bismuth vanadate (BiVO4) was prepared and characterized by various techniques such as powder XRD, HRTEM, EADX, UV–Vis-DRS, FT-IR, Raman, BET and XPS analyses. The characterization results reveal that the rGO well decorated by BiVO4. The electrochemical impedance spectroscopy (EIS) shows the increasing of charge transfer of rGO/BiVO4 in presence of light irradiation. In this research, the pure BiVO4 and rGO/BiVO4 composite have been explored for photocatalytic reduction of nitroarenes. Among the prepared nanocomposites, rGO loaded with 10% BiVO4 catalyst (noted as rGO/BiVO4–10%) shows the best performance for the photo-reduction of various nitroaromatic molecules to their corresponding amine compounds under visible-light irradiation at room temperature. The catalyst exhibited in particular excellent photocatalytic activity for the conversion of 1,4-dinitrobenzene to 4-nitroanilline (100% conversion) in 20 min, 4-chloronitrobenzene to 4-chloroaniline and 2-nitrophenol to 2-aminophenol (100% conversion) in only 30 min. In addition, the conversion of 4-bromonitrobenzene, 4-iodonitrobenzene to their corresponding amine compounds (100% conversion) was achieved in 60 min. The catalyst was recovered for several times and reused without decreasing of its efficiency.

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