Journal
APPLIED CATALYSIS A-GENERAL
Volume 549, Issue -, Pages 60-67Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2017.09.026
Keywords
Graphene oxide framework; Pore encapsulation; Palladium nanocatalysts; Suzuki-Miyaura cross-coupling
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
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We describe a new method to synthesize a catalyst comprising of Pd nanoparticles encapsulated in a graphene oxide framework (Pd@GOF). 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 Pd@GOF 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 metal@GOF nanocatalysts with improved activity and durability, which must be attractive for a broad range of practical applications.
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