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Electrocatalytic regeneration of atmospherically aged MoS2 nanostructures via solution-phase sulfidation
RSC Advances, Volume: 6, Issue: 32, Pages: 26689 - 26695
Swansea University Author:
Richard Palmer
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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...
| Published in: | RSC Advances |
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| ISSN: | 2046-2069 |
| Published: |
Royal Society of Chemistry (RSC)
2016
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| Online Access: |
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| 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. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
32 |
| Start Page: |
26689 |
| End Page: |
26695 |