Issue 2, 2020

The surface-enhanced resonance Raman scattering of dye molecules adsorbed on two-dimensional titanium carbide Ti3C2Tx (MXene) film

Abstract

In this report, the Raman enhancement of adsorbed dye molecules on a spin-cast two-dimensional (2D) titanium carbide Ti3C2Tx (MXene) film via resonance Raman scattering, so-called MXenes-enhanced resonance Raman scattering (MERRS), was observed. Based on the energy level diagram of the molecule–MXene system, we determined that the location of the charge-transfer transition from the HOMO of crystal violet (CV) to the Fermi level should be at or close to 1.9 eV. This indicates a considerable charge-transfer intensity contribution to the overall SERS enhancement. The as-prepared film showed itself to be extremely sensitive for the detection of CV dye molecules with a surface coverage of 12.732 pg cm−2, and the calculated enhancement factor reached 3.42 × 109.

Graphical abstract: The surface-enhanced resonance Raman scattering of dye molecules adsorbed on two-dimensional titanium carbide Ti3C2Tx (MXene) film

Supplementary files

Article information

Article type
Communication
Submitted
10 Mär 2020
Accepted
27 Mär 2020
First published
30 Mär 2020
This article is Open Access
Creative Commons BY license

Mater. Adv., 2020,1, 146-152

The surface-enhanced resonance Raman scattering of dye molecules adsorbed on two-dimensional titanium carbide Ti3C2Tx (MXene) film

S. Elumalai, J. R. Lombardi and M. Yoshimura, Mater. Adv., 2020, 1, 146 DOI: 10.1039/D0MA00091D

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