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Porous hollow MoS2 microspheres derived from core–shell sulfonated polystyrene microspheres@MoS2 nanosheets for efficient electrocatalytic hydrogen evolution

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Abstract

Porous hollow MoS2 microspheres were fabricated from core–shell monodisperse sulfonated polystyrene (SPS) microspheres@MoS2 nanosheets by pyrolysis at 800 °C under a N2 atmosphere. SPS microspheres were employed as the template and carbon precursor. The composite was characterized by powder X-ray diffraction (PXRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), N2 adsorption and X-ray photoelectron spectroscopy (XPS). The unique hollow structure not only enlarges the specific surface area and increases Mo-edge active sites, but also facilitates the diffusion of the electrolyte. Furthermore, the residual porous carbons in the hollow MoS2 microspheres were produced due to the incomplete decomposition of SPS, which will enhance the conductivity of the composite, thus promoting the electrocatalytic activity of hydrogen evolution. The as-prepared porous hollow MoS2 exhibits a low overpotential of 90 mV associated with a low Tafel slope of 51 mV per decade and excellent stability in the hydrogen evolution reaction (HER).

Graphical abstract: Porous hollow MoS2 microspheres derived from core–shell sulfonated polystyrene microspheres@MoS2 nanosheets for efficient electrocatalytic hydrogen evolution

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Publication details

The article was received on 20 Jan 2017, accepted on 22 Feb 2017, published on 23 Feb 2017 and first published online on 23 Feb 2017


Article type: Research Article
DOI: 10.1039/C7QI00044H
Citation: Inorg. Chem. Front., 2017, Advance Article
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    Porous hollow MoS2 microspheres derived from core–shell sulfonated polystyrene microspheres@MoS2 nanosheets for efficient electrocatalytic hydrogen evolution

    J. Yi, P. Shi, J. Liang, M. Cao, Y. Huang and R. Cao, Inorg. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QI00044H

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