Cited by 393Electrocatalysts for Energy ConversionCO2 Reduction Techniques and CatalystsAdvanced Photocatalysis Techniques

Enhanced electrocatalytic activity for hydrogen evolution reaction from self-assembled monodispersed molybdenum sulfidenanoparticles on an Au electrode

Wang, Tanyuan, Liu, Lu, Zhu, Zhiwei, Papakonstantinou, Pagona, Hu, Jingbo, Liu, Hongyun, Li, Meixian·2013·Energy Environ. Sci.

Abstract

Ultrasmall molybdenum sulfide nanoparticles with diameters of 1.47 ± 0.16 nm were fabricated from bulk MoS2 by a combination of ultrasonication and centrifugation. The nanoparticles were then assembled on an Au surface to form a film with high electrocatalytic activity for hydrogen evolution reaction (HER). A Tafel slope of 69 mV per decade was measured for this film and the onset potential was estimated to be −0.09 V. The small loading (1.03 μg cm−2) and the high current density (0.92 mA cm−2 at η = 0.15 V) demonstrated extremely high catalytic efficiency. X-ray photoelectron spectroscopic results revealed that the assembled nanoparticle film was sulfur enriched with abundant S edges and a structural rearrangement of the S rich particles might occur during the self-assembly process, resulting in significantly enhanced electrocatalytic activity for HER. Electrochemical impedance measurements suggested that the assembling process optimized the conductivity of the nanoparticle film, which contributed to the enhanced HER catalytic activity. Our research has provided a new way to synthesize active molybdenum sulfide nanoparticles for HER and a new approach to achieve enrichment of S edges on molybdenum sulfide, which might have potential use not only for electrocatalytic HER, but also for photoelectrocatalytic HER and plasmon-enhanced water splitting.

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Crossref · 10.1039/c2ee23513g

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Authors
Wang, T., Liu, L., Zhu, Z., Papakonstantinou, P., Hu, J., Liu, H., & Li, M.
Affiliations
  • Peking University (CN)
  • University of Ulster (GB)
  • Beijing Normal University (CN)
Corresponding author
Li, Meixian
Venue
Energy Environ. Sci.
Published
2013
Volume
6
Issue
2
Pages
625-633
ISSN
  • 1754-5692 (ISSN-L)
  • 1754-5706
OpenAlex
W1991875973
Cited by
393
References
27
Citations by year
2026: 2 · 2025: 13 · 2024: 12 · 2023: 13 · 2022: 17 · 2021: 25 · 2020: 33 · 2019: 32 · 2018: 34 · 2017: 58 · 2016: 47 · 2015: 47 · 2014: 39 · 2013: 21
FWCI
13.12
Type
journal article
Language
en
Open access
closed
Locations
Energy & Environmental Science (publishedVersion)
Funders
National Natural Science Foundation of China
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › CO2 Reduction Techniques and Catalysts
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
Keywords
hydrogen evolution reaction, electrocatalysis, self-assembly, gold electrode, sonochemical synthesis, water splitting, photoelectrocatalysis

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