Raman Spectroscopy Analysis of the Structure and Surface Chemistry of Ti 3 C 2 T x MXene

Raman spectroscopy is one of the most useful tools for the analysis of two-dimensional (2D) materials. While MXenes are a very large family of 2D transition metal carbides and nitrides, there have been just a few Raman studies of materials from this family. Here, we report on a systematic study of the most widely used and most important MXene to date: Ti3C2Tx. By synthesizing material using different methods, we show that Raman spectra of Ti3C2Tx are affected not only by the composition and surface groups but also by intercalated species and stacking. Due to a plasmonic peak of Ti3C2Tx around 785 nm, resonant conditions are achieved, enabling us to observe an extra peak at ∼120 cm–1, when excited with a red…

• BE
  Basic Energy Sciences