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http://dx.doi.org/10.4150/KPMI.2020.27.5.394

Synthesis and Nucleation Behavior of MoO3 Nano Particles with Concentration of Precursors  

Lee, Seyoung (Department of Energy Engineering, Dankook University)
Kwon, Namhun (Department of Energy Engineering, Dankook University)
Roh, Jaeseok (Department of Energy Engineering, Dankook University)
Lee, Kun-Jae (Department of Energy Engineering, Dankook University)
Publication Information
Journal of Powder Materials / v.27, no.5, 2020 , pp. 394-400 More about this Journal
Abstract
Molybdenum trioxide (MoO3) is used in various applications including sensors, photocatalysts, and batteries owing to its excellent ionic conductivity and thermal properties. It can also be used as a precursor in the hydrogen reduction process to obtain molybdenum metals. Control of the parameters governing the MoO3 synthesis process is extremely important because the size and shape of MoO3 in the reduction process affect the shape, size, and crystallization of Mo metal. In this study, we fabricated MoO3 nanoparticles using a solution combustion synthesis (SCS) method that utilizes an organic additive, thereby controlling their morphology. The nucleation behavior and particle morphology were confirmed using ultraviolet-visible spectroscopy (UV-vis) and field emission scanning electron microscopy (FE-SEM). The concentration of the precursor (ammonium heptamolybdate tetrahydrate) was adjusted to be 0.1, 0.2, and 0.4 M. Depending on this concentration, different nucleation rates were obtained, thereby resulting in different particle morphologies.
Keywords
Molybdenum trioxide; Solution combustion synthesis; Nucleation behavior; Morphology; Nanoparticles;
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