Etching of TiO2(110) Single-crystal Surface with Aniline for Step Direction Control

After subjecting a hydrofluoric acid treated and annealed TiO2(110) single-crystal substrate to immersion in an ethanol solution of aniline, a uniform step structure in the [001] direction was observed on the TiO2(110) surface without aniline. Since this finding is considered to control the step dir...

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Bibliographic Details
Published in:Chemistry letters 2023-01, Vol.52 (10), p.823-827
Main Authors: Takahari, Mami, Goto, Taiga, Yoshimoto, Soichiro, Kondo, Toshihiro
Format: Article
Language:English
Subjects:
Aniline
Crystal surfaces
Ethanol
Hydrofluoric acid
Single crystals
Substrates
Titanium dioxide
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Summary:After subjecting a hydrofluoric acid treated and annealed TiO2(110) single-crystal substrate to immersion in an ethanol solution of aniline, a uniform step structure in the [001] direction was observed on the TiO2(110) surface without aniline. Since this finding is considered to control the step direction on the TiO2(110) surface, the formed surface was discussed in detail and a model of the step line formation process was proposed.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.230334