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One-step Solution Processing of Ag, Au and Pd@MXene Hybrids for SERS
Journal article   Open access   Peer reviewed

One-step Solution Processing of Ag, Au and Pd@MXene Hybrids for SERS

Elumalai Satheeshkumar, Taron Makaryan, Armen Melikyan, Hayk Minassian, Yury Gogotsi and Masahiro Yoshimura
Scientific reports, v 6(1), pp 32049-32049
25 Aug 2016
PMID: 27557838
url
https://doi.org/10.1038/srep32049View
Published, Version of Record (VoR) Open

Abstract

ESI Highly Cited Paper (Incites)
We report on one-step hybridization of silver, gold and palladium nanoparticles from solution onto exfoliated two-dimensional (2D) Ti3C2 titanium carbide (MXene) nanosheets. The produced hybrid materials can be used as substrates for surface-enhanced Raman spectroscopy (SERS). An approximate analytical approach is also developed for the calculation of the surface plasmon resonance (SPR) frequency of nanoparticles immersed in a medium, near the interface of two dielectric media with different dielectric constants. We obtained a good match with the experimental data for SPR wavelengths, 440 nm and 558 nm, respectively for silver and gold nanoparticles. In the case of palladium, our calculated SPR wavelength for the planar geometry was 160 nm, demonstrating that non-spherical palladium nanoparticles coupled with 2D MXene yield a broad, significanlty red-shifted SPR band with a peak at 230 nm. We propose a possible mechanism of the plasmonic hybridization of nanoparticles with MXene. The as-prepared noble metal nanoparticles on MXene show a highly sensitive SERS detection of methylene blue (MB) with calculated enhancement factors on the order of 10(5). These findings open a pathway for extending visible-range SERS applications of novel 2D hybrid materials in sensors, catalysis, and biomedical applications.

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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Multidisciplinary
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