Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 7, Issue 24, Pages 19770-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b05060
Keywords
Graphene nanosheets; Co-intercalated; LiOH/NaOH; Exfoliation; Antifriction; Antiwear
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Funding
- Jiangsu Province Six Talent Peaks Project [2014-XCL-013]
- Jiangsu Industrial-Academic-Research Prospective Joint Project [BY2016069-02]
- Priority Academic Program Development of Jiangsu Higher Education Institutions [PPZY2015B112]
- Top-notch Academic Programs Project of Jiangsu Higher Education Institutions [PPZY2015B112]
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We have successfully developed Li+/Na+ co intercalated exfoliation for graphene nanosheets by a hydro thermal method without the participation of any organic solvents. The effect of the Li+/Na+ ratio on the exfoliation of graphite was intensively studied. The chemical structure of the as-prepared graphene nanosheets was confirmed by the characterizations. Moreover the results verified that the, thickness of the as-prepared graphene nanosheets was 2.65-2.78 nm (about 7-8 layers). The potential application of the as-prepared graphene nanosheets in antifriction and antiwear behaviors was investigated in castor oil. The results demonstrated that the antifriction and antiwear performance of the castor oil with 0.04 wt % as-prepared graphene nanosheets was significantly enhanced, up to 36.84% and 48.57%, respectively. The antifriction mechanism was probed by detecting the morphologies and Raman spectra of worn surfaces.
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