Synthesis of Au–Pd@CeO2 nanocomposite as a potential catalyst for the Buchwald–Hartwig cross-coupling and amination of benzyl alcohol reactions

Herein, we report the novel protocol for synthesizing bimetallic gold and palladium nanoparticles decorated on rigid and stable cerium oxide support using aloe vera extract. The Au–Pd@CeO₂ catalyst was found to be effective for the Buchwald–Hartwig C–N cross-coupling reaction and amination of benzyl alcohol due to the synergistic influence generated by Au and Pd metals. The prepared catalyst was characterized by using XRD, TEM, SEM, and EDS. The catalyst can be efficiently used for a diverse range of substrates in the Buchwald–Hartwig C–N cross-coupling and amination of benzyl alcohol reactions compared to previously described protocols. The catalyst retains its catalytic activity even after seven cycles.

Graphical abstract

The synthesis of bimetallic gold and palladium nanoparticles decorated on cerium oxide support using aloe vera extract. The Au-Pd@CeO₂ catalyst was found to be effective for Buchwald–Hartwig C-N cross-coupling and amination of benzyl alcohol reactions due to the synergistic effect generated by Au and Pd metals.