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Holey Reduced Graphene Oxide Coupled with an Mo2N–Mo2C Heterojunction for Efficient Hydrogen Evolution

Yan, Haijing, Xie, Ying, Jiao, Yanqing, Wu, Aiping, Tian, Chungui, Zhang, Xiaomeng, Wang, Lei, Fu, Honggang·2018·Advanced Materials

Abstract

An in situ catalytic etching strategy is developed to fabricate holey reduced graphene oxide along with simultaneous coupling with a small‐sized Mo 2 N–Mo 2 C heterojunction (Mo 2 N–Mo 2 C/HGr). The method includes the first immobilization of H 3 PMo 12 O 40 (PMo 12) clusters on graphite oxide (GO), followed by calcination in air and NH 3 to form Mo 2 N–Mo 2 C/HGr. PMo 12 not only acts as the Mo heterojunction source, but also provides the Mo species that can in situ catalyze the decomposition of adjacent reduced GO to form HGr, while the released gas (CO) and introduced NH 3 simultaneously react with the Mo species to form an Mo 2 N–Mo 2 C heterojunction on HGr. The hybrid exhibits superior activity towards the hydrogen evolution reaction with low onset potentials of 11 mV (0.5 m H 2 SO 4) and 18 mV (1 m KOH) as well as remarkable stability. The activity in alkaline media is also superior to Pt/C at large current densities (>88 mA cm−2). The good activity of Mo 2 N–Mo 2 C/HGr is ascribed to its small size, the heterojunction of Mo 2 N–Mo 2 C, and the good charge/mass‐transfer ability of HGr, as supported by a series of experiments and theoretical calculations.

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Metadata

Authors
Yan, H., Xie, Y., Jiao, Y., Wu, A., Tian, C., Zhang, X., Wang, L., & Fu, H.
Venue
Advanced Materials
Publisher
Wiley
Published
2017-11-22
Volume
30
Issue
2
ISSN
  • 0935-9648 (ISSN-L)
  • 1521-4095
OpenAlex
W2771015317
Cited by
563
References
9
FWCI
17.36
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Holey Reduced Graphene Oxide Coupled with an Mo2N–Mo2C Heterojunction for Efficient Hydrogen Evolution. https://app.cochat.ai/papers/10.1002/adma.201704156
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Yan, H., Xie, Y., Jiao, Y., Wu, A., Tian, C., Zhang, X., Wang, L., & Fu, H. (2018). Holey Reduced Graphene Oxide Coupled with an Mo2N–Mo2C Heterojunction for Efficient Hydrogen Evolution. Advanced Materials. https://doi.org/10.1002/adma.201704156

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