High-Yield Preparation of Exfoliated 1T-MoS<sub>2</sub> with SERS Activity

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Er E., Hou H., Criado A., Langer J., Moller M., ERK N., ...Daha Fazla

CHEMISTRY OF MATERIALS, cilt.31, sa.15, ss.5725-5734, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 15
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1021/acs.chemmater.9b01698
  • Dergi Adı: CHEMISTRY OF MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.5725-5734
  • Ankara Üniversitesi Adresli: Evet

Özet

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.