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

Satheeshkumar Elumalai; John R. Lombardi; Masahiro Yoshimura

doi:10.1039/D0MA00091D

The surface-enhanced resonance Raman scattering of dye molecules adsorbed on two-dimensional titanium carbide Ti₃C₂T_x (MXene) film†

Satheeshkumar Elumalai,

‡*^a John R. Lombardi^b and Masahiro Yoshimura^ac

Author affiliations

* Corresponding authors

^a Hierarchical Green-Energy Materials (Hi-GEM) Research Center, Department of Material Science and Engineering and Promotion Center for Global Materials Research (PCGMR), National Cheng Kung University, Tainan 701, Taiwan
E-mail: analyticalsathi@gmail.com

^b Department of Chemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA

^c Tokyo Institute of Technology, Tokyo 152-8550, Japan

Abstract

In this report, the Raman enhancement of adsorbed dye molecules on a spin-cast two-dimensional (2D) titanium carbide Ti₃C₂T_x (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.

This article is part of the themed collections: Advances in Materials Characterisation and Popular Advances

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Article information

DOI: https://doi.org/10.1039/D0MA00091D
Article type: Communication
Submitted: 10 mar 2020
Accepted: 27 mar 2020
First published: 30 mar 2020
This article is Open Access

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

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The surface-enhanced resonance Raman scattering of dye molecules adsorbed on two-dimensional titanium carbide Ti₃C₂T_x (MXene) film

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

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