2D Transition Metal Carbides (MXenes) for Carbon Capture

Ingemar Persson, Joseph Halim, Hans Lind, Thomas W. Hansen, Jakob B. Wagner, Lars-Åke Näslund, Vanya Darakchieva, Justinas Palisaitis, Johanna Rosen, Per O.Å. Persson*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Global warming caused by burning of fossil fuels is indisputably one of mankind's greatest challenges in the 21st century. To reduce the ever-increasing CO2 emissions released into the atmosphere, dry solid adsorbents with large surface-to-volume ratio such as carbonaceous materials, zeolites, and metal-organic frameworks have emerged as promising material candidates for capturing CO2 . However, challenges remain because of limited CO2 /N2 selectivity and long-term stability. The effective adsorption of CO2 gas (≈12 mol kg-1 ) on individual sheets of 2D transition metal carbides (referred to as MXenes) is reported here. It is shown that exposure to N2 gas results in no adsorption, consistent with first-principles calculations. The adsorption efficiency combined with the CO2 /N2 selectivity, together with a chemical and thermal stability, identifies the archetype Ti3 C2 MXene as a new material for carbon capture (CC) applications.
Original languageEnglish
Article numbere1805472
JournalAdvanced Materials
Volume31
Issue number2
Number of pages5
ISSN0935-9648
DOIs
Publication statusPublished - 2019

Keywords

  • Carbon capture
  • Environmental TEM
  • MXene
  • Surface terminations

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