Fast and Efficient Preparation of Exfoliated 2H MoS2 Nanosheets by Sonication-Assisted Lithium Intercalation and Infrared Laser-Induced 1T to 2H Phase Reversion

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• 作者：Xiaobin Fan ; Pengtao Xu ; Dekai Zhou ; Yifan Sun ; Yuguang C. Li ; Minh An T. Nguyen ; Mauricio Terrones ; Thomas E. Mallouk
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：September 9, 2015
• 年：2015
• 卷：15
• 期：9
• 页码：5956-5960
• 全文大小：404K
• ISSN：1530-6992

文摘

Exfoliated 2H molybdenum disulfide (MoS₂) has unique properties and potential applications in a wide range of fields, but corresponding studies have been hampered by the lack of effective routes to it in bulk quantities. This study presents a rapid and efficient route to obtain exfoliated 2H MoS₂, which combines fast sonication-assisted lithium intercalation and infrared (IR) laser-induced phase reversion. We found that the complete lithium intercalation of MoS₂ with butyllithium could be effected within 1.5 h with the aid of sonication. The 2H to 1T phase transition that occurs during the lithium intercalation could be also reversed by IR laser irradiation with a DVD optical drive.