Synthesis of Epitaxial MoS₂/MoO₂ Core-Shell Nanowires by Two-Step Chemical Vapor Deposition with Turbulent Flow and Their Physical Properties.

ABSTRACT: MoO₂ nanowires (NWs), MoO₂/MoS₂ core-shell NWs, and MoS₂ nanotubes (NTs) were synthesized by the turbulent flow chemical vapor deposition of MoO₂ using MoO₃, followed by sulfurization in the sulfur gas flow. The involvement of MoO _x suboxide is suggested by density functional theory (DFT) calculations of the surface energies of MoO₂. The thickness of the MoS₂ layers can be controlled by precise tuning of sulfur vapor flow and temperatures. MoS₂ had an armchair-type winding topology due to the epitaxial relation with the MoO₂ NW surface. A single ∼ few-layer MoO₂/MoS₂ core-shell structure showed photoluminescence after the treatment with a sup

SUBMITTER: Goto M 

PROVIDER: S-EPMC9631877 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature