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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, N. V. Rees, Richard Palmer Orcid Logo

RSC Advances, Volume: 6, Issue: 32, Pages: 26689 - 26695

Swansea University Author: Richard Palmer Orcid Logo

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DOI (Published version): 10.1039/c6ra03326a

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 favour...

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Published in: RSC Advances
ISSN: 2046-2069
Published: Royal Society of Chemistry (RSC) 2016
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa49228
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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.
College: College of Engineering
Issue: 32
Start Page: 26689
End Page: 26695