journal article·2019-08-13Open access

High-Yield Preparation of Exfoliated 1T-MoS2 with SERS Activity

Engin Er, Hui-Lei Hou, Alejandro Criado, Judith Langer, Marco Möller, Nevin Erk, Luis M. Liz-Marzán, Maurizio Prato

Chemistry of Materials· Volume 31· Issue 15

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 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 defects of the structure and preserving the high-ratio 1T phase.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: 2D Materials and Applications · Gold and Silver Nanoparticles Synthesis and Applications · Advanced biosensing and bioanalysis techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CIC biomaGUNE, Paseo de Miramón, 182, Donostia-San Sebastián 20014, Spain

Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, Ankara 06560, Turkey

Ikerbasque, Basque Foundation for Science, Bilbao 48013, Spain

Department of Chemical and Pharmaceutical Sciences, Università degli Studi di Trieste, Via Licio Giorgieri 1, Trieste 34127, Italy

Funding

AXA Research Fund · Ministerio de Econom?a y Competitividad · H2020 Future and Emerging Technologies · T?rkiye Bilimsel ve Teknolojik Arastirma Kurumu · Agencia Estatal de Investigaci?n

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