cm7b00867_si_001.pdf (2.24 MB)
One-Pot Synthesis of Zeolitic Imidazolate Framework 67-Derived Hollow Co3S4@MoS2 Heterostructures as Efficient Bifunctional Catalysts
journal contribution
posted on 2017-06-15, 14:20 authored by Yanna Guo, Jing Tang, Huayu Qian, Zhongli Wang, Yusuke YamauchiHerein,
we present a facile metal–organic framework-engaged
strategy to synthesize hollow Co3S4@MoS2 heterostructures as efficient bifunctional catalysts for
both H2 and O2 generation. The well-known cobalt-based
metal–organic zeolitic imidazolate frameworks (ZIF-67) are
used not only as the morphological template but also as the cobalt
precursor. During the two-step temperature-raising hydrothermal process,
ZIF-67 polyhedrons are first transformed to hollow cobalt sulfide
polyhedrons by sulfidation, and then molybdenum disulfide nanosheets
further grow and deposit on the surface of hollow cobalt sulfide polyhedrons
at the increased temperature. The crystalline hollow Co3S4@MoS2 heterostructures are finally obtained
after subsequent thermal annealing under a N2 atmosphere.
Due to the synergistic effects between the hydrogen evolution reaction
active catalyst of MoS2 and the oxygen evolution reaction
active catalyst of Co3S4, the obtained hollow
Co3S4@MoS2 heterostructures exhibit
outstanding bifunctional catalytic performances toward both hydrogen
and oxygen evolution reactions in acidic and alkaline media.
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ZIF -67 polyhedronsOne-Pot SynthesisN 2 atmospherebifunctional catalyststemperature-raising hydrothermal processMoS 2 HeterostructuresMoS 2hydrogen evolution reactionH 2MoS 2 heterostructures exhibitcobalt sulfide polyhedronsO 2 generationoxygen evolution reactionMoS 2 heterostructuresoxygen evolution reactionsmolybdenum disulfide nanosheetscobalt precursorCo 3 S 4Efficient Bifunctional Catalysts HereinZeolitic Imidazolate Framework 67- Derived Hollow Co 3 S 4
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