Colloidal stability of 2D MoS2 obtained via liquid-phase exfoliation using Water and Tween 20

• Environmentally friendly aqueous exfoliation of MoS 2 using a nonionic surfactant. • High shear mixing yields stable MoS 2 dispersions with tunable flake size. • Sedimentation kinetics and AFM confirm progressive exfoliation upon longer mixing. • Simple and scalable route suitable for further processing and applications. We report a facile and potentially scalable aqueous liquid-phase exfoliation of MoS 2 using the nonionic surfactant Tween 20 and a conventional high-shear mixer. The influence