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Synthesis and Characterization of GO-Chit-Ni Nanocomposite as a Recoverable Nanocatalyst for Reducing Nitroarenes in Water

[ Vol. 17 , Issue. 7 ]

Author(s):

Mosayeb Sarvestani and Roya Azadi*   Pages 523 - 531 ( 9 )

Abstract:


In the present study, nickel nanoparticles (Ni-NPs) immobilized on graphene oxide-chitosan (GO-Chit-Ni) have been synthesized and characterized as a catalyst for reduction of nitroarenes in water. For this purpose, GO has been functionalized with chitosan (GO-Chit). Then, Ni-NPs were immobilized on the surface of GO-Chit using a simple method. The GO-Chi-Ni nanocomposites were characterized using Fourier Transforms Infrared Spectroscopy (FT-IR), Transmission Electron Microscopy (TEM), X-Ray Diffraction Measurements (XRD), and Atomic Adsorption Spectrometry (AAS). The GO-Chi-Ni nanoparticles demonstrated appropriate catalytic activity in reducing nitroarenes to aryl amines in the existence of sodium borohydride (NaBH4) aqueous solution as a hydrogen source at 80oC. This catalytic system applies environmentally benign water as a solvent that is cheap, easily accessible, non-toxic, non-volatile, non-flammable and thermally stable. This type of catalyst can be applied several times with no considerable change in its performance.

Keywords:

Graphene oxide, Chitosan, Nickel nanoparticles, Nitroarene, Reduction, Aryl amine

Affiliation:

Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz 61357-43169, Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz 61357-43169



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