Issue 32, 2016

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

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

Supplementary files

Article information

Article type
Paper
Submitted
04 Feb 2016
Accepted
04 Mar 2016
First published
04 Mar 2016
This article is Open Access
Creative Commons BY license

RSC Adv., 2016,6, 26689-26695

Author version available

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

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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