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Distinctive stability of a free-standing monolayer clay mineral nanosheet via transmission electron microscopy
| Title: | Distinctive stability of a free-standing monolayer clay mineral nanosheet via transmission electron microscopy |
| Authors: | Akita, Ikumi Browse this author | | Ishida, Yohei Browse this author | | Yonezawa, Tetsu Browse this author →KAKEN DB |
| Issue Date: | 21-Nov-2020 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | Physical chemistry chemical physics |
| Volume: | 22 |
| Issue: | 43 |
| Start Page: | 25095 |
| End Page: | 25102 |
| Publisher DOI: | 10.1039/d0cp04659k |
| Abstract: | Among 2D materials, clay mineral nanosheets have been extensively studied owing to their specific features, such as high surface charge and large surface area. Recently, we reported a stable free-standing (without any surfactants or matrices) monolayer clay mineral, characterized via annular dark-field scanning transmission electron microscopy (ADF-STEM) at the atomic-scale. Herein, we demonstrated that the monolayer clay mineral exhibited outstanding stability under electron beam irradiation compared to two- or three-layered nanosheets via electron diffraction analysis. In addition to its low thickness (similar to 1 nm-thick), the absence of an interlayer space was the critical factor contributing to the distinctive stability of the monolayer clay mineral, compared to that of the two- or three-layered clay mineral. The findings here inspire further investigation in free-standing clay mineral using (S)TEM and also for a wide variety of nanomaterials which are strongly hydrated. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/83303 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 石田 洋平
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