Details

Autor(en) / Beteiligte

• Kong, Desheng
• Wang, Haotian
• Cha, Judy J
• Pasta, Mauro
• Koski, Kristie J
• Yao, Jie
• Cui, Yi

Titel

Synthesis of MoS2 and MoSe2 Films with Vertically Aligned Layers

Ist Teil von

• Nano letters, 2013-03, Vol.13 (3), p.1341-1347

Ort / Verlag

Washington, DC: American Chemical Society

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Layered materials consist of molecular layers stacked together by weak interlayer interactions. They often crystallize to form atomically smooth thin films, nanotubes, and platelet or fullerene-like nanoparticles due to the anisotropic bonding. Structures that predominately expose edges of the layers exhibit high surface energy and are often considered unstable. In this communication, we present a synthesis process to grow MoS2 and MoSe2 thin films with vertically aligned layers, thereby maximally exposing the edges on the film surface. Such edge-terminated films are metastable structures of MoS2 and MoSe2, which may find applications in diverse catalytic reactions. We have confirmed their catalytic activity in a hydrogen evolution reaction (HER), in which the exchange current density correlates directly with the density of the exposed edge sites.