Nano Research

, Volume 10, Issue 9, pp 3035–3048 | Cite as

Co-Co3O4@carbon core–shells derived from metal−organic framework nanocrystals as efficient hydrogen evolution catalysts

Research Article


Controllable pyrolysis of metal−organic frameworks (MOFs) in confined spaces is a promising strategy for the design and development of advanced functional materials. In this study, Co-Co3O4@carbon composites were synthesized via pyrolysis of a Co-MOFs@glucose polymer (Co-MOFs@GP) followed by partial oxidation of Co nanoparticles (NPs). The pyrolysis of Co-MOFs@GP generated a core–shell structure composed of carbon shells and Co NPs. The controlled partial oxidation of Co NPs formed Co-Co3O4 heterojunctions confined in carbon shells. Compared with Co-MOFs@GP and Co@carbon-n (Co@C-n), Co-Co3O4@carbon-n (Co-Co3O4@C-n) exhibited higher catalytic activity during NaBH4 hydrolysis. Co-Co3O4@C-II provided a maximum specific H2 generation rate of 5,360 mL·min−1·gCo −1 at room temperature due to synergistic interactions between Co and Co3O4 NPs. The Co NPs also endowed Co-Co3O4@C-n with the ferromagnetism needed to complete the magnetic momentum transfer process. This assembly-pyrolysis-oxidation strategy may be an efficient method of preparing novel nanocomposites.


Co-metal−organic frameworks (MOFs) core–shell NaBH4 hydrolysis pyrolysis synergistic effect 


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Financial supports from the National Natural Science Foundation of China (Nos. 21371154, 21401168, and U1204203) are acknowledged.

Supplementary material

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Co-Co3O4@carbon core–shells derived from metal−organic framework nanocrystals as efficient hydrogen evolution catalysts


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© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.College of Chemistry and Molecular EngineeringZhengzhou UniversityZhengzhouChina
  2. 2.Department of ChemistryTsinghua UniversityBeijingChina

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