Annealing disintegrates Cu2MoS4 nanosheets into MoS2 and Cu2S nanoheterostructures

• Published in: Journal of materials science. Materials in electronics 2017-11, Vol.28 (21), p.15936-15941
• Main Authors: Ali, Irfan, Ullah, Zaka, Rehan, Imran, Khalil, Adnan, Habib, Muhammad, Masood, Hafiz Tariq, Sohail, Yasir, Waseem, Muhammad
• Format: Article
• Language: English
• Subjects: Annealing; Characterization and Evaluation of Materials; Chemistry and Materials Science; Copper sulfides; Disintegration; Electron microscopy; Lithium-ion batteries; Materials Science; Molybdenum disulfide; Morphology; Nanosheets; Optical and Electronic Materials; Raman spectroscopy; Spectrum analysis; Transmission electron microscopy; X ray photoelectron spectroscopy; X-ray diffraction
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-017-7490-5

The hydrothermal synthesis and effect of annealing temperature on morphological and structural properties of Cu 2 MoS 4 nanosheets are studied in this work. The as-grown Cu 2 MoS 4 nanosheets are annealed in ambient Ar environment at different temperatures (250, 300, 350, 400, 500, 750, 1000 °C). Suitable annealing disintegrates the Cu 2 MoS 4 nanosheets into MoS 2 and Cu 2 S nanoheterostructures. The annealing effect on prepared materials is characterized through X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The structural changes are observed during XRD analysis and corresponding morphological changes are studied through TEM. Raman spectroscopy is employed to study the vibrational modes of the materials and it also confirms the disintegration of Cu 2 MoS 4 nanosheets into MoS 2 and Cu 2 S nanoheterostructures. The influence of annealing temperature on binding energy of the Cu 2 MoS 4 nanosheets is studied by XPS. The assembled nanoheterostructures are tested as anode material for the Li-ion battery and it shows significant specific capacity and cyclability.