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- Title
Low-Temperature Synthesis of Near-Monodisperse Globular MoS<sub>2</sub> Nanoparticles with Sulphur Powders.
- Authors
Wang, Hui; Li, Xuequan; Yan, Kai; Liu, Guicheng; Song, Weixing; Shen, Ting; Zou, Dechun
- Abstract
Nanoparticles (NPs) with high uniformity have been extensively investigated for their excellent chemical stability. Near-monodisperse globular MoS2 NPs were prepared with sulphur powders (SPs) as a sulphur source by a one-pot polyol-mediated process without surfactants, transfer agents and toxic agents at 170-190C. The as-processed SPs greatly affected the formation of the MoS2 NPs after low-activity sulphur (S8)n was reassembled from common SPs (S. The average size of MoS2 NPs can be reduced remarkably from 100-200nm to 50nm by introducing low amounts of MnCl2. A preliminary four-step growth mechanism based on the aggregation-coalescence model was also proposed. This green and simple method may be an alternative to the common hot-injection and heating-up methods for the preparation of monodisperse NPs, particularly transition metal dichalogenides. Near-monodisperse globular MoS2 nanoparticles were prepared using sulfur powders as the sulfur source without surfactants and transfer agents at 170-190C. The average size of MoS2 could be reduced dramatically from 100-200 to 50 nm by introducing minimal MnCl2. A four-step growth mechanism based on the aggregationcoalescence model was proposed.
- Subjects
LOW temperatures; MOLYBDENUM disulfide; MONODISPERSE colloids; SURFACE active agents; REACTION mechanisms (Chemistry); ETHYLENE glycol
- Publication
NANO, 2017, Vol 12, Issue 8, p-1
- ISSN
1793-2920
- Publication type
Article
- DOI
10.1142/S1793292017500916