Hydrothermal-assisted shearing exfoliation for few-layered MoS2 nanosheets. Issue 30 (31st May 2019)

• Record Type: Journal Article
• Authors: Wu, Pei-Rong; Liu, Zan; Cheng, Zhi-Lin
• Is Part Of: RSC advances. Volume 9:Issue 30(2019)
• Page Start: 17016
• Page End: 17024
• Publication Date: 2019-05-31
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c9ra02102g
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : A facile exfoliation method based on hydrothermal-shearing exfoliation to obtain MoS2 nanosheets. Abstract : The exfoliation of bulk MoS2 into few layers has attracted considerable attention as 2D nanomaterials in the past decade. We developed a facile approach for producing MoS2 nanosheets by hydrothermal-assisted shearing exfoliation based on organic-free strategy. This original exfoliation was highly efficient for large-scale production and sustainable for the environment. The thickness of the as-exfoliated MoS2 nanosheets was about 4–6 layers, and the lateral size became smaller from hydrothermal processing to shearing. The hydrothermal processing with the participation of ammonium carbonate played an important role in hydrothermal-assisted shearing exfoliation. As a prospective application, the antifriction performance of the as-exfoliated MoS2 nanosheets in oil was evaluated using a ball-on-ball mode. Evidently, the average friction coefficient and wear scar diameter of 0.08 wt% MoS2 -based oil dropped to about 20.66% and 47.27% relative to those of the base oil, which exhibited an excellent antifriction and antiwear ability.