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Issue 32, 2016
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Electrocatalytic regeneration of atmospherically aged MoS2 nanostructures via solution-phase sulfidation

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Abstract

The performance of MoS2 as a hydrogen evolution catalyst is diminished by exposure to air. We demonstrate a solution phase technique to resulfidate MoSxO2−x using Na2S2O3. The success of the method was judged by performance as a H+ reduction catalyst. Following sulfidation samples displayed a favourable decrease in both onset potential and Tafel slope, with the best decreasing from −0.23 V to −0.18 V (vs. SHE), and 282 mV dec−1 to 87 mV dec−1 respectively. Ageing studies indicate that this method may be used to recycle the MoS2 repeatedly without losing catalytic performance, although repeated sulfidation did result in homogenisation of the nanostructure.

Graphical abstract: Electrocatalytic regeneration of atmospherically aged MoS2 nanostructures via solution-phase sulfidation

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Publication details

The article was received on 04 Feb 2016, accepted on 04 Mar 2016 and first published on 04 Mar 2016


Article type: Paper
DOI: 10.1039/C6RA03326A
Citation: RSC Adv., 2016,6, 26689-26695
  • Open access: Creative Commons BY license
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    Electrocatalytic regeneration of atmospherically aged MoS2 nanostructures via solution-phase sulfidation

    H. A. Burch, M. Isaacs, K. Wilson, R. E. Palmer and N. V. Rees, RSC Adv., 2016, 6, 26689
    DOI: 10.1039/C6RA03326A

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