Green Suzuki–Miyaura coupling reaction catalyzed by palladium nanoparticles supported on graphitic carbon nitride

• Published in: Applied catalysis. B, Environmental Vol. 165; pp. 661 - 667
• Main Authors: Sun, Jingwen, Fu, Yongsheng, He, Guangyu, Sun, Xiaoqiang, Wang, Xin
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2015
• Subjects: Catalysis; Catalysts; Dispersion; Graphitic carbon nitride; Green aspects; Green Suzuki–Miyaura reaction; Joining; Mild conditions; Nanoparticles; Nanostructure; Palladium; Palladium nanoparticles; Solvents; Mild conditions; Green Suzuki–Miyaura reaction; Palladium nanoparticles; Graphitic carbon nitride
• ISSN: 0926-3373; 1873-3883
• DOI: 10.1016/j.apcatb.2014.10.072

Adsorbed halobenzene molecules on Pd/g-C3N4 surface can easily gain access to Pd NPs, promoting the reaction with phenylboronic acid under mild conditions. •A Pd/g-C3N4 catalyst was prepared via a one-step photodeposition method.•As a green catalyst, Pd/g-C3N4 exhibits high performance in Suzuki coupling reaction.•A complete conversion of bromobenzene can be achieved under mild conditions. The synthesis of biphenyls under mild conditions is really a challenge to green chemistry. Here we report a facile photodeposition strategy to fabricate a Pd/g-C3N4 nanocomposite and demonstrate its application as a green catalyst for Suzuki–Miyaura coupling reactions. The Pd nanoparticles with an average size of 2.73nm are uniformly dispersed on the g-C3N4 surface. The Pd/g-C3N4 nanocomposite shows superior catalytic activity in Suzuki–Miyaura coupling reactions at room temperature without any phase transfer agents, toxic solvents and inert atmosphere, especially, allowing a complete conversion (100%) of bromobenzene and a high yield of 97% for biphenyl. The high catalytic performance of Pd/g-C3N4 nanocomposite in Suzuki–Miyaura coupling reactions can be attributed to the specific characteristics of the unique nanostructure of Pd/g-C3N4 and the concerted effects of g-C3N4 and ultrafine Pd particles.