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Suzuki–Miyaura reactions, involving the activation of carbon–halogen bonds, especially C–Cl bonds, have drawn widespread attention because of their huge industrial potential. However, these reactions are dependent on the development of highly active and stable catalysts. Herein, we developed a convenient one-pot wet route to synthesize PdxCuy bimetallic nanocrystals for the Suzuki–Miyaura reaction. By introducing Cu, an earth-abundant element, the catalytic activity was greatly enhanced while the amount of Pd required was reduced. PdxCuy nanocrystals of different compositions, including Pd3Cu, Pd2Cu, PdCu, PdCu2, and PdCu3, were successfully synthesized by tuning the Pd: Cu ratio. Their catalytic performance in Suzuki–Miyaura reactions between phenylboronic acid and halobenzenes (iodo-, bromo-, or chlorobenzene) showed that PdCu3 nanocatalyst demonstrated the best efficacy.
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