We describe a new method to synthesize a catalyst comprising of Pd nanoparticles encapsulated in a graphene oxide framework ([email protected]). GO was first intercalated with benzene-1,4-diboronic acid to afford a three-dimensional (3D) framework with uniform interlayer spaces, in which Pd nanoparticles were generated through salt reduction. Thus formed Pd nanoparticles were highly dispersed and stabilized inside a graphitic gallery space with a narrow particle size distribution. Thus obtained [email protected] catalyst exhibited an outperforming activity toward the Suzuki-Miyaura cross-coupling reaction in both polar and apolar solvents. Moreover, it can be reused for at least five cycles without any significant loss of the activity, while commercial Pd/C and Pd/GO exhibited a clear drop in the activity. These findings would establish the GOF as a promising scaffold to host noble metal nanoparticles and to construct desired [email protected] nanocatalysts with improved activity and durability, which must be attractive for a broad range of practical applications.

我们描述了一种新的合成催化剂的方法，该催化剂包括封装在氧化石墨烯骨架中的Pd纳米颗粒（[受电子邮件保护]）。首先将GO与苯-1,4-二硼酸插入，以提供具有均匀夹层空间的三维（3D）骨架，其中通过盐还原生成Pd纳米粒子。如此形成的Pd纳米颗粒高度分散且稳定在具有狭窄粒度分布的石墨通道空间内。如此获得的[受电子邮件保护的]催化剂在极性和非极性溶剂中均对Suzuki-Miyaura交叉偶联反应表现出优异的活性。此外，它可以重复使用至少五个周期而不会造成任何明显的活性损失，而商用Pd / C和Pd / GO的活性却明显下降。