2016年
Laser THz emission spectroscopy of gas adsorption-desorption dynamics in tungsten disulfide nanosheets
e-Journal of Surface Science and Nanotechnology
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- 巻
- 14
- 号
- 0
- 開始ページ
- 78
- 終了ページ
- 82
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1380/ejssnt.2016.78
- 出版者・発行元
- The Surface Science Society of Japan
© 2016 The Surface Science Society of Japan. Physically adsorbed gas molecules have dramatic effects on the inherent properties of 2D nanomaterials due to their atomic/molecular-level thinness. In this work, we applied laser THz emission spectroscopy to study the gas adsorption-desorption dynamics of tungsten disulfide (WS2) nanosheets prepared by liquid phase exfoliation technique. We find that in low vacuum conditions, NIR irradiation promotes desorption of O2 molecules from WS2 nanosheets. Upon exposure to atmospheric air, results suggest slight photo-oxidation caused by NIR irradiation. Strong photo-oxidation by UV illumination is also confirmed, and we also observed subsequent O2 desorption from WS2 nanosheets by NIR irradiation when the UV illumination is turned off. These results are discussed using the Langmuir adsorption isotherm, which explains the variation of gas adsorption with the gas pressure.
- リンク情報
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- DOI
- https://doi.org/10.1380/ejssnt.2016.78
- CiNii Articles
- http://ci.nii.ac.jp/naid/130005138180
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000374651500001&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85077252337&origin=inward 本文へのリンクあり
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85077252337&origin=inward
- ID情報
-
- DOI : 10.1380/ejssnt.2016.78
- ISSN : 1348-0391
- eISSN : 1348-0391
- CiNii Articles ID : 130005138180
- SCOPUS ID : 85077252337
- Web of Science ID : WOS:000374651500001