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Readily Available “Stock Solid” of MoS 2 and WS 2 Nanosheets through Solid‐Phase Exfoliation for Highly Concentrated Dispersions in Water
Author(s) -
Liu Gang,
Komatsu Naoki
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600116
Subject(s) - molybdenum disulfide , tungsten disulfide , exfoliation joint , materials science , chemical engineering , tungsten , brine , ball mill , nanotechnology , chemistry , metallurgy , graphene , organic chemistry , engineering
We report a facile method for large‐scale exfoliation of bulk molybdenum disulfide (MoS 2 ) and tungsten disulfide (WS 2 ) in the presence of sodium cholate through ball milling. The exfoliated sample can be stored as a “stock solid” and is readily dispersed in water just by shaking by hand, giving a highly concentrated dispersion (up to 4.2 and 2.6 mg mL −1 ) of MoS 2 and WS 2 nanosheets with up to 93 % and 57 % yields, respectively, after centrifugation.