Journal
2D MATERIALS
Volume 6, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1583/aae7e3
Keywords
scale up; graphene; WS2; TMD's; shear mixer
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While it has been demonstrated that large scale liquid exfoliation of graphene is possible using high-shear exfoliation, it has not yet been shown to be applicable to a broader range of layered materials. In addition, it would be useful to determine whether the mechanisms reported for shear exfoliation of graphene also apply to other 2D materials. In this work we show that previous models describing high-shear exfoliation of graphene apply to MoS2 and WS2. However, we find the minimum shear rate required to exfoliate MoS2 and WS2 to be similar to 3 x 10(4) s(-1), somewhat higher than the value for graphene. We also demonstrate the scalability of shear exfoliation of WS2. By measuring and then optimising the scaling parameters, shear exfoliation of WS2 is shown to be capable of reaching concentrations of 1.82 g l(-1) in 6 h and demonstrating a maximum production rate of 0.95 g h(-1).
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