In Situ Environmental Transmission Electron Microscopy Study of Oxidation of Two-Dimensional Ti3C2 and formation of Carbon-Supported TiO2.

Ghassemi, H., W. Harlow, O. Mashtalir, M. Beigdahi, M.R. Lukatskaya,Y. Gogotsi and M.L. Taheri, 2014
production of carbon-supported TiO2
Image courtesy of J. Mater. Chem.

Abstract

Two-dimensional Ti3C2, also known as “MXene”, was oxidized in air under two different oxidizing regimes in order to produce carbon-supported TiO2. In situ TEM analysis coupled with Raman spectroscopy revealed the formation of either anatase nanoparticles or planar rutile nanocrystals, which were controlled by the time, temperature and heating rate.ct

Impact Statement

The oxidation in air of two-dimensional Ti3C2 (MXene) using two different oxidizing regimes with the intent of producing carbon-supported TiO2. The researchers observed that by controlling time, temperature and heating rate with in situ TEM and Raman spectroscopy, either anatase nanoparticles or planar rutile nanocrystals would result depending on the conditions.