Scalable large nanosheets of transition metal disulphides through exfoliation of amine intercalated MS2 [M = Mo, W] in organic solvents

• Main Authors: Jeffery, A. Anto, Nethravathi, C, Rajamathi, Michael
• Format: Journal Article
• Language: English
• Published: 01.01.2015
• ISSN: 2046-2069
• DOI: 10.1039/c5ra08402d

Various alkylamine intercalated MS 2 (M = Mo, W) have been prepared by reacting Li x MS 2 with aqueous solutions of the amines. The amine intercalated MS 2 exfoliate readily in alcohols. While the shorter amine intercalated MS 2 exfoliate better in lower alcohols the longer amine intercalated MS 2 exfoliate better in higher alcohols. The longer amine intercalated MS 2 exfoliate well even in a nonpolar solvent, toluene. Up to 9 millimoles of MS 2 per liter could be dispersed through exfoliation in organic solvents. The dispersions are quite stable and comprise 2D-nanosheets of MS 2 . Hybrids of MoS 2 and WS 2 could be prepared by evaporating the solvent from a mixture of colloidal dispersions of amine intercalated MoS 2 and WS 2 . The hybrid exhibits features of a heterostructure in its photoluminescence spectrum. Amine intercalated MS 2 exfoliate in organic solvents to give large 2D nanosheets.