Green Suzuki–Miyaura coupling reaction catalyzed by palladium nanoparticles supported on graphitic carbon nitride
Green Suzuki–Miyaura coupling reaction catalyzed by palladium nanoparticles supported on graphitic carbon nitride
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DOI：
10.1016/j.apcatb.2014.10.072
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发表时间：
2015-04
影响因子：
22.1
通讯作者：
Jingwen Sun;Yongsheng Fu;Guangyu He;Xiaoqiang Sun;Xin Wang
中科院分区：
文献类型：
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作者：
Jingwen Sun;Yongsheng Fu;Guangyu He;Xiaoqiang Sun;Xin Wang
在温和条件下合成联苯确实是对绿色化学的挑战。在这里，我们报告了一种简单的光沉积策略来制备Pd/g- c3n4纳米复合材料，并展示了它作为铃木-宫浦偶联反应的绿色催化剂的应用。平均粒径为2.73 nm的钯纳米粒子均匀分布在g- c3n4表面。Pd/g- c3n4纳米复合材料在室温条件下对Suzuki-Miyaura偶联反应具有优异的催化活性，不需要任何相转移剂、有毒溶剂和惰性气氛，特别是溴苯的转化率达到100%，联苯的收率高达97%。Pd/g- c3n4纳米复合材料在Suzuki-Miyaura偶联反应中的高催化性能可归因于Pd/g- c3n4独特的纳米结构和g- c3n4与超细Pd粒子的协同作用。
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-C3N4nanocomposite and demonstrate its application as a green catalyst for Suzuki–Miyaura coupling reactions. The Pd nanoparticles with an average size of 2.73 nm are uniformly dispersed on the g-C3N4surface. The Pd/g-C3N4nanocomposite 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-C3N4nanocomposite in Suzuki–Miyaura coupling reactions can be attributed to the specific characteristics of the unique nanostructure of Pd/g-C3N4and the concerted effects of g-C3N4and ultrafine Pd particles.