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

Burch, H.A., Isaacs, M., Wilson, K., Palmer, R.E. and Rees, N.V. (2016). Electrocatalytic regeneration of atmospherically aged MoS2 nanostructures via solution-phase sulfidation. RSC advances, 6 (32), pp. 26689-26695.

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.

Publication DOI: https://doi.org/10.1039/c6ra03326a
Divisions: Engineering & Applied Sciences > Chemical Engineering & Applied Chemistry
Engineering & Applied Sciences > European Bioenergy Research Institute (EBRI)
Additional Information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Funding: EPSRC Electronic supplementary information (ESI) available. See DOI: 10.1039/c6ra03326a
Uncontrolled Keywords: Chemical Engineering(all),Chemistry(all)
Full Text Link: http://pubs.rsc ... 6A#!divAbstract
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2016
Authors: Burch, H.A.
Isaacs, M.
Wilson, K. ( 0000-0003-4873-708X)
Palmer, R.E.
Rees, N.V.

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