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Cited by 103Lubricants and Their AdditivesForce Microscopy Techniques and ApplicationsTribology and Lubrication Engineering

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Soluble, Exfoliated Two-Dimensional Nanosheets as Excellent Aqueous Lubricants

Zhang, Wenling, Cao, Yanlin, Tian, Pengyi, Guo, Fei, Tian, Yu, Zheng, Wen, Ji, Xuqiang, Liu, Jingquan·2016·ACS Applied Materials & Interfaces
DOI 10.1021/acsami.6b09752
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Abstract

Dispersion in water of two-dimensional (2D) nanosheets is conducive to their practical applications in fundamental science communities due to their abundance, low cost, and ecofriendliness. However, it is difficult to achieve stable aqueous 2D material suspensions because of the intrinsic hydrophobic properties of the layered materials. Here, we report an effective and economic way of producing various 2D nanosheets (h-BN, MoS 2 , MoSe 2 , WS 2 , and graphene) as aqueous dispersions using carbon quantum dots (CQDs) as exfoliation agents and stabilizers. The dispersion was prepared through a liquid phase exfoliation. The as-synthesized stable 2D nanosheets based dispersions were characterized by UV-vis, HRTEM, AFM, Raman, XPS, and XRD. The solutions based on CQD decorated 2D nanosheets were utilized as aqueous lubricants, which realized a friction coefficient as low as 0.02 and even achieved a superlubricity under certain working conditions. The excellent lubricating properties were attributed to the synergetic effects of the 2D nanosheets and CQDs, such as good dispersion stability and easy-sliding interlayer structure. This work thus proposes a novel strategy for the design and preparation of high-performance water based green lubricants.

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Metadata

Authors
Zhang, W., Cao, Y., Tian, P., Guo, F., Tian, Y., Zheng, W., Ji, X., & Liu, J.
Affiliations
  • Qingdao University (CN)
  • State Key Laboratory of Tribology (CN)
  • College of Materials Science and Engineering, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, China
Corresponding author
  • Zhang, Wenling
  • Tian, Yu
  • Liu, Jingquan
ORCID
Venue
ACS Applied Materials & Interfaces
Publisher
American Chemical Society (ACS)
Published
2016-11-17
Volume
8
Issue
47
Pages
32440-32449
ISSN
  • 1944-8244 (ISSN-L)
  • 1944-8252
DOI
10.1021/acsami.6b09752
OpenAlex
W2552833912
Cited by
103
References
1
Citations by year
2026: 5 · 2025: 6 · 2024: 6 · 2023: 9 · 2022: 12 · 2021: 9 · 2020: 11 · 2019: 20 · 2018: 14 · 2017: 11
FWCI
13.34
Type
journal article
Language
en
Open access
closed
Locations
  • ACS Applied Materials & Interfaces (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • China Postdoctoral Science Foundation (2016M592136)
  • National Natural Science Foundation of China (21603115, 51323006, 51425502)
  • Qingdao Basic & Applied Research project (15-9-1-100-jch)
  • State Key Laboratory of Tribology, Tsinghua University (SKLTKF15A10)
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Lubricants and Their Additives
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Force Microscopy Techniques and Applications
  • Physical Sciences › Engineering › Mechanical Engineering › Tribology and Lubrication Engineering
Keywords
nanosheets, aqueous lubricants, liquid-phase exfoliation, carbon quantum dots, superlubricity, friction coefficient, hexagonal boron nitride, MoS2, MoSe2, tungsten disulfide, graphene, green lubricants

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