Immobilization of single argon atoms in nano-cages of two-dimensional zeolite model systems.
Immobilization of single argon atoms in nano-cages of two-dimensional zeolite model systems.
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DOI:
10.1038/ncomms16118
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发表时间:
2017-07-17
影响因子:
16.6
通讯作者:
Boscoboinik JA
中科院分区:
文献类型:
--
作者:
Zhong JQ;Wang M;Akter N;Kestell JD;Boscoboinik AM;Kim T;Stacchiola DJ;Lu D;Boscoboinik JA
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.
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影响因子:
3.7
作者:
Kresse, G;Furthmuller, J
通讯作者:
Furthmuller, J
影响因子:
3.7
作者:
Göransson, C;Olovsson, W;Abrikosov, IA
通讯作者:
Abrikosov, IA
影响因子:
3.7
作者:
Lichtenstein, Leonid;Heyde, Markus;Freund, Hans-Joachim
通讯作者:
Freund, Hans-Joachim
影响因子:
1.9
作者:
Emmez, Emre;Boscoboinik, J. Anibal;Freund, Hans-Joachim
通讯作者:
Freund, Hans-Joachim
影响因子:
3.7
作者:
Altman, Eric I.;Goetzen, Jan;Schwarz, Udo D.
通讯作者:
Schwarz, Udo D.