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

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • Aston Univ

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.

Details

Original languageEnglish
Pages (from-to)26689-26695
Number of pages6
JournalRSC Advances
Volume6
Publication statusPublished - 4 Mar 2016