Highly dispersed CuCo nanoparticles supported on reduced graphene oxide as high-activity catalysts for hydrogen evolution from ammonia borane hydrolysis
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Hydrogen has been considered one of the best energy carriers to satisfy the increasing demand for clean and renewable energy supply. In this paper, a series of copper-based (CuCo, CuNi, and CuFe) nanoparticles supported on reduced graphene oxide (rGO) were synthesized via a facile one-pot chemical reduction route, and their catalytic performance on hydrogen evolution from ammonia borane (NH3BH3, AB) hydrolysis at room temperature was studied. The results revealed that the Cu0.2Co0.8 nanoparticles (~ 2.1 nm) on rGO exhibited the highest activity, and Co nanoparticles (~ 3.9 nm) on rGO also displayed the excellent performance. Among all the as-prepared Cu0.2Co0.8/rGO catalysts, Cu0.2Co0.8/rGO with 48 wt% nanoparticles exhibits the highest activity with the initial hydrogen production rate values as high as 50.6 mol H2 molmetal−1 min−1, superior to the majority of Cu-based non-noble metal catalysts. The excellent performance could be attributed to the well dispersion of CuCo nanoparticles on reduced graphene oxide.
KeywordsHydrogen generation Reduced graphene oxide Catalytic properties Nanostructures Ammonia borane
This study was funded by the National Key R&D Program of China (No. 2016YFB0601200) and the National Natural Science Foundation of China (Nos. 51476173 and 51776202).
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Conflict of interest
The authors declare that they have no conflict of interest.
- Liu PL, Gu XJ, Kang K, Zhang H, Cheng J, Su HQ (2017) Highly efficient catalytic hydrogen evolution from ammonia borane using the synergistic effect of crystallinity and size of noble-metal-free nanoparticles supported by porous metal–organic frameworks. ACS Appl Mater Interfaces 9:10759–10767CrossRefGoogle Scholar