Nanowire templated CVD synthesis and morphological control of MoS2 nanotubes†
Abstract
Although the syntheses of molybdenum disulfide (MoS2) nanoparticles, nanosheets, and nanotubes (NTs) have been reported for years, the synthesis and morphological control of the few-layered MoS2 NTs are still a great challenge, where a template-assisted route is barely seen among the gas-phase reactions at elevated temperature. Here, we report the nanowire (NW) templated chemical vapor deposition (CVD) synthesis of few-layered MoS2 NTs by utilizing a sacrificial template in the CVD process. The MoS2 NTs exhibit good structural integrity derived from the high temperature gas-phase reaction. Moreover, the diameter of the NTs and layer number of MoS2 are controllable. A field effect transistor (FET) device is fabricated to study the electrical property of a single MoS2 NT, and the carrier mobility is obtained. This work provides an effective route for the synthesis of the MoS2 NTs with only a few layers of thickness and could promote the synthesis of other one-dimensional (1-D) transition metal dichalcogenide (TMD) nanomaterials.