One and two-dimensional control growth of MoSe2−x nanostructures

• Published in: Materials today communications Vol. 32; p. 103934
• Main Authors: Thennarasi, A., Vasu, Kuraganti
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2022
• Subjects: Crystal growth; Defective MoSe2; Hydrogen evolution reaction; Microstructure; Nanocrystalline materials; Nanorods; Crystal growth; Hydrogen evolution reaction; Microstructure; Defective MoSe2; Nanocrystalline materials; Nanorods
• ISSN: 2352-4928; 2352-4928
• DOI: 10.1016/j.mtcomm.2022.103934

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. [Display omitted] •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.