Palladium Nanoparticles-Decorated β-Cyclodextrin-Cyanoguanidine Modified Graphene Oxide: A Heterogeneous Nanocatalyst for Suzuki-Miyaura Coupling and Reduction of 4-Nitrophenol Reactions in Aqueous Media

In this study, graphene oxide used as a stable support to adsorb and stabilize palladium nanoparticles for preparing a heterogeneous nanocatalyst. In order to increase the palladium adsorption, the surface of graphene oxide was functionalized with beta-Cyclodextrin and cyanoguanidine compounds. The prepared nanocatalyst was defined by various characterization techniques such as FT-IR, XRD, TEM, SEM-EDX, ICP and UV-Vis. The catalytic efficiency of the synthesized organic-inorganic nanocomposite investigated by focusing on the Suzuki-Miyaura binding reaction and reduction of 4-nitrophenol to 4-aminophenol, which the nanocatalyst work is easy, affordable, and environmentally safe. The performed reaction showed high yields of biphenyl compounds through the Suzuki-Miyaura reaction and confirms very good conversion of 4-nitrophenol to its reduced form. Also, the proposed nanocatalyst presented significant catalytic efficiency (yield: 98% to 91%) after using five times. [GRAPHICS] .

Automated summary

The study utilizes graphene oxide as a stable support for palladium nanoparticles, resulting in a heterogeneous nanocatalyst. The nanocatalyst demonstrates excellent catalytic efficiency through various characterization techniques. It is efficient, cost-effective, and environmentally friendly, maintaining its catalytic activity after multiple uses.