Recent Synthetic Trends of Ti3C2Tx MXene

Abstract

MXene, a two-dimensional transition metal carbide, nitride, or carbonitride, possesses exceptionally thin and large surface areas while also exhibiting remarkable electrical and chemical properties. These properties have attracted considerable interest in the application of MXene, including energy storage devices, sensors, and catalysts. Since the discovery of MXene in 2011, a number of synthetic methods have been proposed. The synthesis of MXene can be mainly divided into two stages: an etching step and a delamination step. The type of terminations or surface defects are dependent on the synthetic method and have a significant impact on key properties such as electrical conductivity. Therefore, research on synthetic methods is essential for the industrialization of MXene. This review provides an overview of the various etching methods and delamination strategies employed in the synthesis of Ti3C2Tx MXene, including the commonly used hydrofluoric acid etching method and the fluorine-free method, which has recently emerged as an environmentally friendly alternative. We also address the latest research trends, challenges, and perspectives for the industrialization of MXene. © 2024, Korean Society of Industrial Engineering Chemistry. All rights reserved.