Highly Efficient and Monodisperse Graphene Oxide Furnished Ru/Pd Nanoparticles for the Dehalogenation of Aryl Halides via Ammonia Borane

Abstract

Highly monodisperse graphene oxide‐supported Ru/Pd nanoparticles (RuPd@GO NPs) have been reproducibly and easily synthesized by microwave assisted method. RuPd@GO NPs was performed for dehalogenation of arylhalides in the presence of ammonia borane in a mild condition as novel, highly efficient and exceptional reusable heterogeneous catalyst. The novel materials were characterized by transmission electron microscopy (TEM), the high resolution electron micrograph (HRTEM), X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). The results showed that the prepared catalysts are highly crystalline, monodisperse and colloidally stable. The current one‐pot catalytic process was described as a new methodology for dehalogenation of arylhalides which can be assessed as a quite simple, eco‐friendly and highly efficient as well as exceptional reusable. All products were provided with one of the highest yield and the shortest time in the presence of novel RuPd@GO NPs due to the the synergistic effect of Ru and Pd. Our synthesis process comes with a facile and eco‐friendly option to RuPd@GO NPs, allowing further scrutiny of current catalysts for numerous other chemical reactions.

General Synthetic Protocol for the Synthesis of Ru‐X (X=Rh, Pd, Ag) Heterogeneous Ultrathin Nanowires with a Tunable Composition

“…All the diffraction peaks are broad, which indicates a nanoscale crystal domain size. The peak splitting of the Ru and Pd phases suggests that the product is a heterogeneous phase in solid solution, which is in agreement with powder XRD results reported previously . This suggestion is also supported by the dissolution experiments of Ru‐Pd nanowires.…”

Single-Walled Carbon Nanotube Supported PtNi Nanoparticles (PtNi@SWCNT) Catalyzed Oxidation of Benzyl Alcohols to the Benzaldehyde Derivatives in Oxygen Atmosphere

“…As a matter of fact, our group carried out serious studies on hydrogenation reactions [30][31][32] The alcohol derivatives such as glycerol [33][34][35] , isopropanol 36,37 and ethanol 38 have attracted interest as green type alternative hydrogen sources [39][40][41] .…”

Improved catalytic effect and metal nanoparticle stability using graphene oxide surface coating and reduced graphene oxide for hydrogen generation from ammonia–borane dehydrogenation

“…For the most part, Pt, [8][9][10][11][12] Ru, [13][14][15] and Pd 16 based catalysts outshine non-noble metals, such as Ni, Cr, 17 Co, [18][19][20] RuPd@GO, 21 Ag/Pd, 22,23 Fe, 24,25 Ag-Ni based nanoparticles, 26 Au-Pd, 27 mesoporous carbon nitride supported Pd and Pd-Ni NPs, 28 PdNi-CeO 2 , 29 NiPt NPs with supported CeO 2 30 (efficient hydrogen generation from an alkaline solution of hydrazine), N-doped graphene supported Co-CeOx, 31 and transition metal nanoparticles with GO 32 for hydrogen generation under the above conditions. Though there has been development in the catalytic efficiencies of bimetallic catalysts, for example, Co-Pd 33,34 and core-shell species such as Au@Co, 35 and monometallic catalysts, the general utilization of these noble metals is restricted by their high cost and the extraordinary amount required.…”