High-Yield Preparation of Exfoliated 1T-MoS2 with SERS Activity
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High-Yield Preparation of Exfoliated 1T-MoS2 with SERS ActivityAuthor(s)
Date
2019-07-17Citation
Chem. Mater. 2019, 31, 15, 5725–5734
Abstract
[Abstract]: Molybdenum disulfide (MoS2), a promising two-dimensional transition-metal dichalcogenide, presents a challenge in the tuning of its optoelectronic and chemical properties. Herein, we demonstrate an efficient route to alter the crystalline structure of MoS2 by chemical exfoliation. Using NaK metal alloys, exfoliated and covalently functionalized MoS2 derivatives were obtained with a high metallic (1T) phase ratio, up to 94.5%. Consequently, exfoliated MoS2 showed a significant surface-enhanced Raman scat-tering activity toward rhodamine 6G (R6G) and crystal violet, with low detection limits. The versatility of this approach allows the covalent functionalization of MoS2 without relying on edge or basal-plane defects of the structure and preserving the high-ratio 1T phase.
Keywords
Alloys
Exfoliation
Functionalization
Raman spectroscopy
X-ray photoelectron spectroscopy
Exfoliation
Functionalization
Raman spectroscopy
X-ray photoelectron spectroscopy
Editor version
Rights
Copyright © 2019 American Chemical Society. This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License, which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
ISSN
0897-4756
1520-5002 (e-ISSN)
1520-5002 (e-ISSN)