Improving oxidation stability of 2D MXenes: synthesis, storage media, and conditions

Aamir Iqbal, Junpyo Hong, Tae Yun Ko, Chong Min Koo

Research output: Contribution to journalReview articlepeer-review

166 Citations (Scopus)


Understanding and preventing oxidative degradation of MXene suspensions is essential for fostering fundamental academic studies and facilitating widespread industrial applications. Owing to their outstanding electrical, electrochemical, optoelectronic, and mechanical properties, MXenes, an emerging class of two-dimensional (2D) nanomaterials, show promising state-of-the-art performances in various applications including electromagnetic interference (EMI) shielding, terahertz shielding, electrochemical energy storage, triboelectric nanogenerators, thermal heaters, light-emitting diodes (LEDs), optoelectronics, and sensors. However, MXene synthesis using harsh chemical etching causes many defects or vacancies on the surface of the synthesized MXene flakes. Defective sites are vulnerable to oxidative degradation reactions with water and/or oxygen, which deteriorate the intrinsic properties of MXenes. In this review, we demonstrate the nature of oxidative degradation of MXenes and highlight the recent advancements in controlling the oxidation kinetics of MXenes with several promising strategic approaches, including careful control of the quality of the parent MAX phase, chemical etching conditions, defect passivation, dispersion medium, storage conditions, and polymer composites.

Original languageEnglish
Article number9
JournalNano Convergence
Issue number1
Publication statusPublished - 2021 Dec

Bibliographical note

Funding Information:
This work was supported by a grant from the Basic Science Research Program (2017R1A2B3006469) through the National Research Foundation of Korea funded by the Ministry of Science, ICT and Future Planning, and Construction Technology Research Project (19SCIP-B146646-02) funded by the Ministry of Land, Infrastructure and Transport, Republic of Korea. C. M. Koo also acknowledges the internal programs of KIST, Korea University, and KU-KIST.

Publisher Copyright:
© 2021, The Author(s).


  • Chemical etching
  • Defect passivation
  • MXene
  • Organic dispersion
  • Oxidation kinetics
  • Polymer composite
  • Storage condition
  • Two-dimensional (2D) nanomaterials

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering


Dive into the research topics of 'Improving oxidation stability of 2D MXenes: synthesis, storage media, and conditions'. Together they form a unique fingerprint.

Cite this