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説明:

The structural change in Pt networks composed of multiple chain connections among grains was observed in air at 1 atm by atomic-resolution environmental cell scanning transmission electron microscopy. An aberration-corrected incident electron probe with a wide convergence angle made it possible to increase the depth resolution that contributes to enhancing the signal-to-noise ratio of Pt network samples in air in an environmental cell, resulting in the achievement of atom-ic-resolution imaging. Dynamic observation on an atomic scale suggested that the structural change of the networks was not attributed to the surface atomic diffusion-induced step motion but mainly caused by the movement and deformation of unstable grains and grain boundaries.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: scanning transmission electron microscopy, environmental cell, atomic resolution, catalyst, Pt network

刊行年月日: 2023-07-26

出版者: MDPI AG

掲載誌:

• Nanomaterials (ISSN: 20794991) vol. 13 p. 2170-2170

研究助成金:

• the Innovative Science and Technology Initiative for Security(ATLA) JPJ004596

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.3390/nano13152170

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更新時刻: 2024-01-05 22:14:05 +0900

MDRでの公開時刻: 2023-11-13 13:30:08 +0900