title: Exfoliation of MoS2and h-BN nanosheets by hydrolysis of LiBH4.
abstract: Efficient preparation of two-dimensional materials is still a great challenge. These materials possess unique electrical, optical, and thermal properties. In this study, few-layer MoS2nanosheets and nanoflakes were exfoliated by the hydrolysis reaction of LiBH4. First, the layered MoS2powder materials were mixed with LiBH4to obtain a homogeneous powder mixture, and then the mixture was heated above the melting point of LiBH4under 300 °C and 4 MPa H2for 2 h, during which the layered materials were curled by liquid LiBH4. In the subsequent hydrolysis of LiBH4, the layered materials were split into nanosheets by H2gas generation. The obtained MoS2nanosheets show almost uniform thickness of ~4 nm, with a width of 2-10 μm and a yield of more than 1.5 wt.%. The effectiveness of this method has also been verified by the preparation of few-layer h-BN. This work provides a new high-yield route to producing two-dimensional materials.
authors.affiliation: School of Materials Science and Engineering and Guangdong Provincial Key Laboratory of Advanced Energy Storage Materials, South China University of Technology, Guangzhou, 510641, People's Republic of China.
authors.forename: Jiuyi
authors.initials: J
authors.lastname: Zhu
authors.forename: Hui
authors.initials: H
authors.lastname: Wang
authors.forename: Jiangwen
authors.initials: J
authors.lastname: Liu
authors.forename: Liuzhang
authors.initials: L
authors.lastname: Ouyang
authors.forename: Min
authors.initials: M
authors.lastname: Zhu