One and two-dimensional control growth of MoSe2−x nanostructures. (August 2022)

• Record Type: Journal Article
• Authors: Thennarasi, A.; Vasu, Kuraganti
• Is Part Of: Materials today communications. Volume 32(2022)
• Publication Date: 2022-08
• Subjects: Microstructure -- Nanocrystalline materials -- Defective MoSe2 -- Nanorods -- Crystal growth -- Hydrogen evolution reaction; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2022.103934
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: Here, we successfully synthesize the 1D nanorods and 2D nanosheets of defective MoSe2 by a hydrothermal method. It is observed that the morphology of MoSe2−x samples is well controlled by the amount of reducing agent added during the synthesis. The SEM and TEM images reveal that the mixed dimensional 1D/2D nanorods/nanosheets are present in a sample prepared with 40 mmol of NaBH4 . The individual 1D nanorod and 2D nanosheet morphology was observed for samples prepared with 60 and 80 mmol respectively. The defective 1D nanorods and 2D nanosheets exhibit different crystallographic planes dispute to posing 2 H-hexagonal crystal structure. The samples containing 2D nanosheets exhibit better electrocatalytic activity than 1D nanorods due to the presence of catalytic active edge sites. Graphical Abstract: ga1 Highlights: One and two-dimensional nanorod and nanosheets of defective MoSe2−x were obtained by a simple hydrothermal method. The amount of reducing agent plays an important role in controlling the morphology. MoSe2−x nanorods and nanosheets exhibit distinct crystallographic features. The electrocatalytic activity depends on the 1D and 2D morphology of MoSe2−x nanostructures.