Universal surface modification of transition metal dichalcogenide decorated with metal nanoparticles for surface enhanced Raman scattering
- Authors
- Hwang, Da Young; Suh, Dong Hack
- Issue Date
- Jun-2017
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Transition metal dichalcogenide; Surface modification; Layered compounds; Noble nanoparticle; Surface plasmon resonance
- Citation
- MATERIALS RESEARCH BULLETIN, v.90, pp 73 - 80
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS RESEARCH BULLETIN
- Volume
- 90
- Start Page
- 73
- End Page
- 80
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/194241
- DOI
- 10.1016/j.materresbull.2017.02.015
- ISSN
- 0025-5408
1873-4227
- Abstract
- Surface modification through the interaction between the soft sulfur layers of transition metal dichalcogenide (MX2; M=Mo,W; X=S) and metal nanoparticles (Ag and Au) can exhibit interesting surface plasmon enhanced Raman scattering (SERS) behaviors. We demonstrate a comprehensive strategy for the synthesis of MX2-metal nanoparticle complexes without aggregation. Even more important is the extent of uptake of Ag and Au NPs for the application of optical sensors. We obtained Raman spectra with a red shift and broad FWHM for MoS2-metal NPs and a decrease of the intensity ratio of E-2g(1)/A(1g) for WS2-metal NPs. The X-ray photoemission spectroscopy results revealed surface modification of MX2-metal nanoparticle complexes with no oxidation of the MX2 surfaces. Finally, we demonstrated that the MX2-metal nanoparticle complexes have excellent properties exhibiting SERS for potential application in nanoscale sensors.
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