The surface-enhanced resonance Raman scattering of dye molecules adsorbed on two-dimensional titanium carbide Ti3C2Tx (MXene) film. Issue 2 (21st April 2020)

• Record Type: Journal Article
• Authors: Elumalai, Satheeshkumar; Lombardi, John R.; Yoshimura, Masahiro
• Is Part Of: Materials advances. Volume 1:Issue 2(2020)
• Page Start: 146
• Page End: 152
• Publication Date: 2020-04-21
• Subjects: 620.11
• DOI: 10.1039/d0ma00091d
• Languages: English
• ISSNs: 2633-5409

Abstract

Abstract : The resonance Raman signal enhancement of crystal violet dyes onto the two-dimensional MXene–Ti3 C2 T x film, so called MXenes-enhanced resonance Raman scattering (MERRS), is reported with a calculated enhancement factor of 3.42 × 10 9 . Abstract : In this report, the Raman enhancement of adsorbed dye molecules on a spin-cast two-dimensional (2D) titanium carbide Ti3 C2 T 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 × 10 9 .