Shape-dependent close-edge 2D-MoS 2 nanobelts.

Atomic-thin MoS 2 materials have attracted increasing attention due to their potentials in numerous fields. However, in 2D-MoS 2 sheets, the edge region usually has unique features differing from the interior region, which has potential application in enhancing catalysts and shape-dependent 2D-nanodevices. However, fabricating it cost-effectively is still very difficult. Here, we present one universal method to obtain various shape-dependent closed-edge 2D-MoS 2 nanobelts only using one simple step, and width of the MoS 2 nanobelts (minimum of 270 nm) were adjustable. Our strategy opens a new fabrication route for closed-edge 2D-MoS 2 nanobelts, and in principle, this method is also suitable for other CVD-grown 2D materials.