Crystal-face Dependence of Photoinduced Hydrophilic Conversion on SrTiO3 Surfaces

Crystal-face Dependence of Photoinduced Hydrophilic Conversion on SrTiO3 Surfaces

The photoinduced hydrophilicity of SrTiO3 single crystals with (100), (110), and (111) facets was investigated. The (100) and (111) facets had a higher hydrophilic conversion rate under UV irradiation than the (110) facet. This is attributed to an unstable O atom on the surface of the (100) and (111...

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Veröffentlicht in:Chemistry letters 2013-06, Vol.42 (6), p.618-620
Hauptverfasser: Katsumata, Ken-ichi, Okayasu, Yuki, Matsushita, Nobuhiro, Okada, Kiyoshi
Format: Artikel
Sprache:eng
Schlagworte:
Conversion
Hydrophilicity
Irradiation
Single crystals
Strontium titanates
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Zusammenfassung:The photoinduced hydrophilicity of SrTiO3 single crystals with (100), (110), and (111) facets was investigated. The (100) and (111) facets had a higher hydrophilic conversion rate under UV irradiation than the (110) facet. This is attributed to an unstable O atom on the surface of the (100) and (111) facets. The crystal-face dependence of the hydrophilic conversion was weakened by repeated UV irradiation, which indicates that an irreversible structural change is caused on the SrTiO3 surface by UV irradiation.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.130115