Cited by 276Advanced Photocatalysis Techniques2D Materials and ApplicationsTiO2 Photocatalysis and Solar Cells

Drastic Layer‐Number‐Dependent Activity Enhancement in Photocatalytic H2 Evolution over n MoS2/CdS (n ≥ 1) Under Visible Light

Chang, Kun, Li, Mu, Wang, Tao, Ouyang, Shuxin, Li, Peng, Liu, Lequan, Ye, Jinhua·2015·Advanced Energy Materials

Abstract

Exploiting noble‐metal‐free cocatalysts is of huge interest for photocatalytic water splitting using solar energy. As an efficient cocatalyst in photocatalysis, MoS 2 is shown promise as a low‐cost alternative to Pt for hydrogen evolution. Here we report a systematical study on controlled synthesis of MoS 2 with layer number ranging from ≈1 to 112 and their activities for photocatalytic H 2 evolution over commercial CdS. A drastic increase in photocatalytic H 2 evolution is observed with decreasing MoS 2 layer number. Particularly for the single‐layer (SL) MoS 2, the SL‐MoS 2/CdS sample reaches a high H 2 generation rate of ≈2.01 × 10−3m h−1 in Na 2 S–Na 2 SO 3 solutions and ≈2.59 × 10−3m h−1 in lactic acid solutions, corresponding to an apparent quantum efficiency of 30.2% and 38.4% at 420 nm, respectively. In addition to the more exposed edges and unsaturated active S atoms, valence band–XPS and Mott–Schottky plots analysis indicate that the SL MoS 2 has the more negative conduction band energy level than the H+/H 2 potential, facilitating the hydrogen reduction.

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Crossref · 10.1002/aenm.201402279

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Authors
Chang, K., Li, M., Wang, T., Ouyang, S., Li, P., Liu, L., & Ye, J.
Affiliations
  • National Institute for Materials Science (JP)
  • Tianjin University (CN)
Corresponding author
Ye, Jinhua
Venue
Advanced Energy Materials
Publisher
Wiley
Published
2015-03-12
Volume
5
Issue
10
ISSN
  • 1614-6832 (ISSN-L)
  • 1614-6840
OpenAlex
W2026392595
Cited by
276
References
55
Citations by year
2026: 3 · 2025: 12 · 2024: 19 · 2023: 21 · 2022: 24 · 2021: 20 · 2020: 37 · 2019: 35 · 2018: 34 · 2017: 37 · 2016: 26 · 2015: 8
FWCI
10.36
Type
journal article
Language
en
Open access
closed
Locations
Advanced Energy Materials (publishedVersion)
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
Keywords
photocatalytic hydrogen evolution, MoS2, CdS, layer number dependence, monolayer MoS2, visible light photocatalysis, noble-metal-free cocatalyst, photocatalytic water splitting, conduction band energy level, apparent quantum efficiency

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