کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5422019 | 1507899 | 2014 | 5 صفحه PDF | دانلود رایگان |
- A recipe for wet chemical preparation of TiO2 single crystal surfaces is presented.
- Procedure is applied to both rutile-TiO2(110) and rutile-TiO2(011).
- Characterisation indicates that well-defined, carbon-free surfaces can be prepared.
- Wet chemical preparation of rutile-TiO2(011) results in a (4Â ÃÂ 1) termination.
A procedure for wet chemical preparation of TiO2 single crystal surfaces is detailed. The potential of this procedure is demonstrated through application to rutile-TiO2(110) and rutile-TiO2(011) substrates. Characterisation with atomic force microscopy, low energy electron diffraction, auger electron spectroscopy, and vibrational sum frequency spectroscopy indicates that flat, well-ordered, carbon-free surfaces can be generated. Notably, in contrast to the (2Â ÃÂ 1) low energy electron diffraction pattern observed for TiO2(011) prepared in ultra-high vacuum, wet chemical preparation results in a (4Â ÃÂ 1) unit cell; wet chemically prepared TiO2(110) displays an unreconstructed (1Â ÃÂ 1) surface.
Journal: Surface Science - Volume 630, December 2014, Pages 41-45