Published January 1, 2019
| Version v1
Journal article
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High-Yield Preparation of Exfoliated 1T-MoS2 with SERS Activity
Creators
- 1. CIC BiomaGUNE, Paseo Miramon 182, Donostia San Sebastian 20014, Spain
- 2. Ankara Univ, Fac Pharm, Dept Analyt Chem, TR-06560 Ankara, Turkey
Description
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 scattering 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 high-ratio 1T phase.
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