Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7709731 | International Journal of Hydrogen Energy | 2017 | 9 Pages |
Abstract
Nanoporous graphene (PG) supported Pt-Co bimetallic nanoparticles were prepared and their catalytic activity in hydrogen generation from hydrolysis of NH3·BH3 solution were examined. The synthesized Pt-Co@PG with a loading amount of 30 wt% Pt-Co (atomic ratio 1:9) exhibited a superior TOF value of 461.17 molH2 minâ1 molPtâ1 and an activation energy (Ea) value of 32.79 kJ molâ1 for NH3·BH3 hydrolysis. This remarkably enhanced activity was ascribed to the charge interaction between Pt-Co NPs and PG support. The defects and holes on PG acting as the anchoring sites for Pt-Co NPs was beneficial for achieving a uniform distribution and a decreased particle size for the NPs. The Pt-Co@PG catalysts also showed a well-established reusability, with 81.2% of their initial catalytic activity after five runs of reactions, demonstrating that they had high durability.
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Authors
Dandan Ke, Jin Wang, Hongming Zhang, Yuan Li, Lu Zhang, Xin Zhao, Shumin Han,