Fe3O4@RGO@Au@C Composite with Magnetic Core and Au Enwrapped in Double-Shelled Carbon: An Excellent Catalyst in the Reduction of Nitroarenes and Suzuki–Miyaura Cross-Coupling

Abstract

Magnetic core double-shelled carbon with Fe 3 O 4 nanoparticles as the core, reduced graphene oxide (RGO) as the inner shell and carbon (C) layer as the outer shell, have been successfully designed and prepared. This tailor-making structure acts as an excellent capsule for encapsulating Au nanoparticles (Au NPs), which could effectively prevent Au NPs from aggregation and leaching. Because of its structural features, magnetic coredouble-shell Fe 3 O 4 @RGO@Au@C architecture exhibits extremely high catalytic performance on two different kinds of organic reactions (1) reduction of nitroarenes, and (2) Suzuki-Miyaura cross coupling of phenyl boronic acid with aryl halides. Moreover, the synthesized catalyst can be easily recovered and reused for at least ten cycles due to its magnetically separable feature and good stability. Graphical AbstractKeywords Heterogeneous catalysis Á Suzuki reaction Á Nanostructure Á Reduction Electronic supplementary material The online version of this article (

Magnetic Nanoparticle Composites: Synergistic Effects and Applications

“…[292] Dabiri et al prepared Fe 3 O 4 @RGO@Au@C composites which demonstrated excellent catalytic performance for the reduction of nitrophenols and the Suzuki-Miyaura cross-coupling reaction. [293] Barberry fruit extract was employed as a reducing and stabilizing agent for the environmentally friendly in situ synthesis of Cu NPs supported on a RGO-Fe 3 O 4 nanocomposite. The final Cu/RGO-Fe 3 O 4 material displayed high catalytic activity for the O-arylation of phenols using aryl halides.…”

Recent Progress in Application of Graphene Supported Metal Nanoparticles in C−C and C−X Coupling Reactions

“…In 2016, Dabiri and co‐workers reported a novel magnetic core double‐shelled carbon with Fe 3 O 4 NPs as the core, reduced graphene oxide (RGO) as the inner shell and carbon (C) layer as the outer shell (Fe 3 O 4 @RGO@Au@C) (Figure ) . The Fe 3 O 4 @RGO@Au@C nanocatalyst was successfully applied in the reduction of nitroarenes and Suzuki‐Miyaura cross coupling reactions of aryl halides with phenylboronic acid (Scheme ).…”

Palladium Supported on Mesoporous Silica/Graphene Nanohybrid as a Highly Efficient and Reusable Heterogeneous Catalyst for C−H Functionalization

“…Recently, studies on 2D mesoporous materials/graphene nanocomposites, prepared using graphene as a template, have been reported. Here, the presence of graphene is expected to provide a highly effective conduction path, which would facilitate the application of mesoporous materials/graphene nanocomposites as electrodes in batteries, fuel cells, sensors, super capacitors, and catalysis …”