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Simultaneous Edge and Electronic Control of MoS2 Nanosheets through Fe Doping for Efficient Oxygen Evolution Reaction

Abstract

Electronic regulation and structural engineering at atomic level of electrocatalysts is of vital importance to highly efficient oxygen evolution reaction (OER). Here we report Fe-doped MoS2 (Fe-MoS2) nanosheets in which the Fe dopant influences the synthesis process to simultaneously tune the edge sites and electronic properties of MoS2. Impressively, the Fe-MoS2 nanosheets exhibit greatly improved catalytic activity towards OER, achieving a current density of 50 mA cm-2 at 290 mV and satisfying durability in 1.0 M KOH. Transmission electron microscopy analysis confirms that the Fe-MoS2 nanosheets undergo an atomic-scale structural evolution from horizontally aligned planes to vertically aligned planes, maximally exposing its edge sites. Density functional theory calculations reveal that the substitution of Fe at Mo site in MoS2 has the lowest formation energy, offering a low overpotential of 328 mV for OER.

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Publication details

The article was received on 17 Aug 2018, accepted on 09 Oct 2018 and first published on 10 Oct 2018


Article type: Communication
DOI: 10.1039/C8NR06659K
Citation: Nanoscale, 2018, Accepted Manuscript
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    Simultaneous Edge and Electronic Control of MoS2 Nanosheets through Fe Doping for Efficient Oxygen Evolution Reaction

    B. Tang, Z. G. Yu, H. L. Seng, N. Zhang, X. Liu, Y. Zhang, W. Yang and H. Gong, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR06659K

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