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Cited by 332

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Surface Structure Dependent Electrocatalytic Activity of Co3O4 Anchored on Graphene Sheets toward Oxygen Reduction Reaction

Open access
Xiao, Junwu, Kuang, Qin, Yang, Shihe, Xiao, Fei, Wang, Shuai, Guo, Lin·2013·Scientific Reports

Abstract

Catalytic activity is primarily a surface phenomenon, however, little is known about Co 3 O 4 nanocrystals in terms of the relationship between the oxygen reduction reaction (ORR) catalytic activity and surface structure, especially when dispersed on a highly conducting support to improve the electrical conductivity and so to enhance the catalytic activity. Herein, we report a controllable synthesis of Co 3 O 4 nanorods (NR), nanocubes (NC) and nano-octahedrons (OC) with the different exposed nanocrystalline surfaces ({110}, {100} and {111}), uniformly anchored on graphene sheets, which has allowed us to investigate the effects of the surface structure on the ORR activity. Results show that the catalytically active sites for ORR should be the surface Co 2+ ions, whereas the surface Co 3+ ions catalyze CO oxidation and the catalytic ability is closely related to the density of the catalytically active sites. These results underscore the importance of morphological control in the design of highly efficient ORR catalysts.

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Metadata

Authors
Xiao, J., Kuang, Q., Yang, S., Xiao, F., Wang, S., & Guo, L.
Venue
Scientific Reports
Published
2013-07-29
Volume
3
Issue
1
Pages
2300-2300
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2002176920
Cited by
332
References
32
FWCI
10.46
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Surface Structure Dependent Electrocatalytic Activity of Co3O4 Anchored on Graphene Sheets toward Oxygen Reduction Reaction. https://app.cochat.ai/papers/10.1038/srep02300
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Xiao, J., Kuang, Q., Yang, S., Xiao, F., Wang, S., & Guo, L. (2013). Surface Structure Dependent Electrocatalytic Activity of Co3O4 Anchored on Graphene Sheets toward Oxygen Reduction Reaction. Scientific Reports. https://doi.org/10.1038/srep02300

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