Immobilization of single argon atoms in nano-cages of two-dimensional zeolite model systems
| Autor: | Deyu Lu, Mengen Wang, Taejin Kim, John Kestell, Jian-Qiang Zhong, J. Anibal Boscoboinik, Dario Stacchiola, Alejandro Boscoboinik, Nusnin Akter |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Physics::Instrumentation and Detectors Science General Physics and Astronomy chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry Molecular sieve 01 natural sciences Article General Biochemistry Genetics and Molecular Biology X-ray photoelectron spectroscopy Nano Physics::Atomic and Molecular Clusters Physics::Atomic Physics Zeolite Condensed Matter::Quantum Gases Multidisciplinary Argon Noble gas General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Chemical physics Density functional theory 0210 nano-technology Ambient pressure |
| Zdroj: | Nature Communications, Vol 8, Iss 1, Pp 1-8 (2017) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | The confinement of noble gases on nanostructured surfaces, in contrast to bulk materials, at non-cryogenic temperatures represents a formidable challenge. In this work, individual Ar atoms are trapped at 300 K in nano-cages consisting of (alumino)silicate hexagonal prisms forming a two-dimensional array on a planar surface. The trapping of Ar atoms is detected in situ using synchrotron-based ambient pressure X-ray photoelectron spectroscopy. The atoms remain in the cages upon heating to 400 K. The trapping and release of Ar is studied combining surface science methods and density functional theory calculations. While the frameworks stay intact with the inclusion of Ar atoms, the permeability of gasses (for example, CO) through them is significantly affected, making these structures also interesting candidates for tunable atomic and molecular sieves. These findings enable the study of individually confined noble gas atoms using surface science methods, opening up new opportunities for fundamental research. While noble gases can be trapped in 3D porous structures, immobilizing them on 2D surfaces represents a formidable challenge. Here, the authors cage individual argon atoms in 2D model zeolite frameworks at room temperature, providing exciting opportunities for the fundamental study of isolated noble gas atoms using surface science methods. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|