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

Elumalai Satheeshkumar, Taron Makaryan, Armen Melikyan, Hayk Minassian, Yury Gogotsi, Masahiro Yoshimura

研究成果: Article

85 引文 斯高帕斯(Scopus)

摘要

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.

原文English
文章編號32049
期刊Scientific reports
6
DOIs
出版狀態Published - 2016 八月 25

All Science Journal Classification (ASJC) codes

  • General

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    Satheeshkumar, E., Makaryan, T., Melikyan, A., Minassian, H., Gogotsi, Y., & Yoshimura, M. (2016). One-step Solution Processing of Ag, Au and Pd@MXene Hybrids for SERS. Scientific reports, 6, [32049]. https://doi.org/10.1038/srep32049