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Selective Argon Uptake and Structural Ordering in Carbon Honeycomb Nanostructures
Volodymyr Hamalii1, Maksym Kabanenko1, Dmytro Diachenko1
1B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Nauky Ave., 61103 Kharkiv, Ukraine.
International Journal of Molecular Sciences
|July 28, 2026
Summary
Carbon honeycomb (CH) structures exhibit non-random argon atom clustering within nanochannels. Gas sorption in CHs depends on channel size and external conditions like temperature.
Area of Science:
- Materials Science
- Nanotechnology
- Physical Chemistry
Background:
- Carbon honeycomb (CH) structures, discovered a decade ago, possess high sorption capacity.
- CHs have potential applications in energy storage (Li/Na batteries), hydrogen storage, and carbon dioxide capture.
- Understanding atom distribution within CHs is crucial for optimizing their performance.
Purpose of the Study:
- To investigate the distribution of captured argon atoms within CH nanochannels.
- To analyze the structural properties of pure and argon-filled CHs.
- To explore the influence of channel size and external conditions on gas sorption.
Main Methods:
- High-energy electron diffraction (HEED) for structural analysis.
- Computational modeling to understand atom distribution.
- Experimental gas sorption measurements under varying temperatures.
Main Results:
- Argon atoms form specific clusters within CH nanochannels, not random distributions.
- Thinner CH channels remain unfilled due to spatial confinement.
- Increasing temperatures lead to argon desorption, starting from larger channels.
Conclusions:
- Argon atom distribution in CHs is highly structured and influenced by physical constraints.
- CH sorption capacity is modulated by channel geometry and environmental factors.
- This research provides insights into gas storage mechanisms in nanostructured materials.
