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In situ direct observation of photocorrosion in ZnO crystals in ionic liquid using a laser-equipped high-voltage electron microscope
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| Title: | In situ direct observation of photocorrosion in ZnO crystals in ionic liquid using a laser-equipped high-voltage electron microscope |
| Authors: | Ishioka, J. Browse this author | | Kogure, K. Browse this author | | Ofuji, K. Browse this author | | Kawaguchi, K. Browse this author | | Jeem, M. Browse this author | | Kato, T. Browse this author | | Shibayama, T. Browse this author | | Watanabe, S. Browse this author →KAKEN DB |
| Issue Date: | 30-Mar-2017 |
| Publisher: | American Institute of Physics (AIP) |
| Journal Title: | AIP Advances |
| Volume: | 7 |
| Issue: | 3 |
| Start Page: | 035220-1 |
| End Page: | 035220-8 |
| Publisher DOI: | 10.1063/1.4979726 |
| Abstract: | ZnO photocatalysts in water react with environmental water molecules and corrode under illumination. ZnO nanorods in water can also grow because of water splitting induced by UVirradiation.To investigate their morphological behavior caused by crystal growth and corrosion, here we developed a new laser-equipped high-voltage electron microscope and observed crystal ZnO nanorods immersed in ionic liquid. Exposing the specimen holder to a laser with awavelength of 325 nm, we observed the photocorrosion in situ at the atomic scale for the first time. This experiment revealed that Zn and O atoms near the interface between the ZnO nanorods and the ionic liquid tended to dissolve into the liquid. The polarity and facet of the nanorods were strongly related to photocorrosion and crystal growth. |
| Rights: | http://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/65144 |
| 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: 渡辺 精一
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