会议论文详细信息
9th Annual Basic Science International Conference 2019
The Effect of Precursors Concentration on the Structural Properties of MoS2 Nanosheet-Microsphere Synthesized Via Hydrothermal Route
自然科学(总论)
Waskito, I.S.^1^3 ; Kurniawan, B.^1 ; M.I., Amal ; M., Hanifuddin
Department of Physics, Universitas Indonesia, Depok, Jawa Barat
16424, Indonesia^1
Research Center for Metallurgy and Materials, Indonesian Institute of Sciences, Banten
15314, Indonesia^2
Research and Development Centre for Oil and Gas Technology lEMIGAS, Jakarta
12230, Indonesia^3
关键词: Ammonium heptamolybdate;    Average particle size;    Hydrothermal autoclaves;    Hydrothermal routes;    Microsphere particles;    Particle size analyzers;    Precursor concentration;    Secondary phase;   
Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/546/4/042048/pdf
DOI  :  10.1088/1757-899X/546/4/042048
学科分类:自然科学(综合)
来源: IOP
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【 摘 要 】

MoS2 nanosheet-microsphere was successfully synthesized via hydrothermal route by applying precursor of ammonium heptamolybdate and thiourea. The precursor concentration was varied of 0.25 M, 0.5 M, 1.0 M and 1.5 M. The crystal structure, morphology and particle size of as-synthesized MoS2 were observed as the effect of the precursors concentration. MoS2 nanosheet-microspheres were prepared inside the hydrothermal autoclave at 200 °C for 24 hours. The X-ray diffraction (XRD) characterization result showed the structure of hexagonal 2H-MoS2 crystals in the absence of other secondary phase. XRD characterization results also revealed that MoS2 with a precursor concentration of 0.25 M has better crystallinity in 002 plane compared to MoS2 synthesized with other precursor concentrations. The Scanning Electron Microscopy (SEM) observation indicated the shape of nanosheets with a thickness of several tens nanometers which were assembled to form microsphere. SEM result also showed precursor concentrations of 0.25M to 1.5M affects to the formation of nanosheet-microsphere MoS2 particle in which along the increasing of the precursor concentration the nanosheet-microsphere particle not all well-formed. Particle Size Analyzer result showed the average particle size decreased and the average specific surface area increased with increasing precursor concentration.

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