Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 7, 2011
Previous Article Next Article

Amorphous molybdenum sulfide films as catalysts for electrochemical hydrogen production in water

Author affiliations

Abstract

Amorphous molybdenum sulfide films are efficient hydrogen evolution catalysts in water. The films are prepared via simple electro-polymerization procedures and are characterized by XPS, electron microscopy and electronic absorption spectroscopy. Whereas the precatalysts could be MoS3 or MoS2, the active form of the catalysts is identified as amorphous MoS2. Significant geometric current densities are achieved at low overpotentials (e.g., 15 mA cm−2 at η = 200 mV) using these catalysts. The catalysis is compatible with a wide range of pHs (e.g., 0 to 13). The current efficiency for hydrogen production is quantitative. A 40 mV Tafel slope is observed, suggesting a rate-determining ion+atom step. The turnover frequency per active site is calculated. The amorphous molybdenum sulfide films are among the most active non-precious hydrogen evolution catalysts.

Graphical abstract: Amorphous molybdenum sulfide films as catalysts for electrochemical hydrogen production in water

Back to tab navigation

Supplementary files

Article information


Submitted
28 Feb 2011
Accepted
25 Mar 2011
First published
14 Apr 2011

Chem. Sci., 2011,2, 1262-1267
Article type
Edge Article

Amorphous molybdenum sulfide films as catalysts for electrochemical hydrogen production in water

D. Merki, S. Fierro, H. Vrubel and X. Hu, Chem. Sci., 2011, 2, 1262
DOI: 10.1039/C1SC00117E

Social activity

Search articles by author

Spotlight

Advertisements