Cited by 6932D Materials and ApplicationsElectrocatalysts for Energy ConversionGraphene research and applications

MoSe 2 and WSe 2 Nanofilms with Vertically Aligned Molecular Layers on Curved and Rough Surfaces

Wang, Haotian, Kong, Desheng, Johanes, Petr, Cha, Judy J., Zheng, Guangyuan, Yan, Kai, Liu, Nian, Cui, Yi·2013·Nano Letters

Abstract

Two-dimensional (2D) layered materials exhibit high anisotropy in materials properties due to the large difference of intra- and interlayer bonding. This presents opportunities to engineer materials whose properties strongly depend on the orientation of the layers relative to the substrate. Here, using a similar growth process reported in our previous study of MoS2 and MoSe2 films whose layers were oriented vertically on flat substrates, we demonstrate that the vertical layer orientation can be realized on curved and rough surfaces such as nanowires (NWs) and microfibers. Such structures can increase the surface area while maintaining the perpendicular orientation of the layers, which may be useful in enhancing various catalytic activities. We show vertically aligned MoSe2 and WSe2 nanofilms on Si NWs and carbon fiber paper. We find that MoSe2 and WSe2 nanofilms on carbon fiber paper are highly efficient electrocatalysts for hydrogen evolution reaction (HER) compared to flat substrates. Both materials exhibit extremely high stability in acidic solution as the HER catalytic activity shows no degradation after 15 000 continuous potential cycles. The HER activity of MoSe2 is further improved by Ni doping.

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Crossref · 10.1021/nl401944f

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Authors
Wang, H., Kong, D., Johanes, P., Cha, J. J., Zheng, G., Yan, K., Liu, N., & Cui, Y.
Affiliations
  • Stanford University (US)
  • SLAC National Accelerator Laboratory (US)
Corresponding author
Cui, Yi
Venue
Nano Letters
Published
2013-06-27
Volume
13
Issue
7
Pages
3426-3433
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2005382501
Cited by
693
References
8
Citations by year
2026: 15 · 2025: 17 · 2024: 28 · 2023: 25 · 2022: 43 · 2021: 31 · 2020: 59 · 2019: 68 · 2018: 96 · 2017: 88 · 2016: 82 · 2015: 86 · 2014: 50 · 2013: 5
FWCI
33.57
Type
journal article
Language
en
Open access
closed
Locations
  • Nano Letters (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
Keywords
MoSe2, WSe2, two-dimensional layered materials, ultrathin films, silicon nanowires, carbon paper, hydrogen evolution reaction, electrocatalysis, catalyst stability, nickel doping, anisotropy

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