CoFe Nanoparticle-Decorated Reduced Graphene Oxide for the Highly Efficient Reduction of 4-Nitrophenol

Abstract

High-performance, nonprecious metal catalysts with special morphologies and easy-to-recycle properties are essential for the treatment of environmental pollutants. Herein, CoFe nanoparticle-decorated reduced graphene oxide (RGO) catalysts were designed and successfully fabricated, and the catalyst was then used to reduce 4-nitrophenol into 4-aminophenol. Outstanding catalytic properties with a reduction rate constant of 4.613 min −1 were achieved due to the synergistic properties of the CoFe metal alloy and the high-conductivity RGO components in the catalysts. In addition, the catalyst was conveniently recovered via magnets due to its inherent magnetic properties. The facile preparation, outstanding catalytic performance, structural stability, and low material costs make the CoFe/RGO nanocatalyst a promising candidate for potential applications in catalysis.

Cobalt nanoparticles encapsulated in nitrogen doped graphite as a highly efficient and reusable catalyst for the reduction of 4-nitrophenol

“…The addition of cobalt metal to nitrogen-doped carbon structure (Co@NC) enhanced graphitization as opposed to nitrogen-doped carbon structure without cobalt (NC), and the higher degree of graphitization was favorable for the transformation of electrons and thus enhanced catalytic performance. 52,53 The incorporation of cobalt into the NC improved its graphitization, which is consistent with the XRD analysis.…”

“…electrons and thus enhanced catalytic performance. 52,53 The incorporation of cobalt into the NC improved its graphitization, which is consistent with the XRD analysis.…”

Probing the Interaction of Heavy and Transition Metal Ions with Silver Nanoparticles Decorated on Graphene Quantum Dots by Spectroscopic and Microscopic Methods

“…The presence of a graphene surface on GQDs opened the possibility of the strong adsorption of these metal ions. The stable anchoring of metals and metal ions on graphene compounds has been reported previously. , The adsorptive interaction of metal ions with functionalized graphene such as graphene oxide and their polymer composites has been well established. − Shtepliuk and co-workers studied the interaction of heavy metal ions with GQDs and suggested the possible adsorption sites for heavy metals and their monovalent and bivalent cations. The possible adsorption sites are schematically illustrated in Figure .…”

High entropy materials—emerging nanomaterials for electrocatalysis

“…26 Therefore, maintaining a single-phase state is essential to achieve atomic mixing of different components and to obtain the synergistic properties. 27…”