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Issue 15, 2015
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From cage-in-cage MOF to N-doped and Co-nanoparticle-embedded carbon for oxygen reduction reaction

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Abstract

By one-step pyrolysis of a unique “cage-in-cage” cobalt metal–organic framework, nitrogen-doped carbon cubes embedded with numerous metallic Co nanoparticles were obtained. A considerable amount of Co particles was encapsulated in thin carbon shells and formed the core–shell-like Co@C structure. With about 60 wt% Co particles in the prepared sample, the nanocomposites of Co nanoparticles and nitrogen-doped carbon show electrocatalytic activity for the oxygen reduction reaction (ORR) with an efficiency comparable to the commercial Pt/C catalyst, but with better durability and methanol-tolerance performance. The metallic Co nanoparticles were found to play an important role in enhancing the ORR activity of the nanocomposites. This simple one-step pyrolysis method provides a novel synthetic route for the synthesis of core–shell-like Co@C nano-composites. The synthesized material represents a highly active non-precious metal catalyst for ORR.

Graphical abstract: From cage-in-cage MOF to N-doped and Co-nanoparticle-embedded carbon for oxygen reduction reaction

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Publication details

The article was received on 05 Dec 2014, accepted on 07 Jan 2015 and first published on 26 Jan 2015


Article type: Paper
DOI: 10.1039/C4DT03726J
Citation: Dalton Trans., 2015,44, 6748-6754
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    From cage-in-cage MOF to N-doped and Co-nanoparticle-embedded carbon for oxygen reduction reaction

    A. Kong, C. Mao, Q. Lin, X. Wei, X. Bu and P. Feng, Dalton Trans., 2015, 44, 6748
    DOI: 10.1039/C4DT03726J

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