TY - JOUR
T1 - Underwater wettability of oleic acid on TiO2 photocatalyst surface
AU - Yabumoto, Daisuke
AU - Ota, Misaki
AU - Sawai, Yusuke
AU - Nishimoto, Shunsuke
AU - Kameshima, Yoshikazu
AU - Miyake, Michihiro
AU - Fujii, Eiji
AU - Katsumata, Ken ichi
N1 - Funding Information:
This study was partly supported by the Joint Usage/Research Program of “Photocatalysis International Research Center,” Research Institute for Science and Technology, Tokyo University of Science . The authors would like to thank Dr. Tomohiko Yoshioka and Prof. Satoshi Hayakawa of Okayama University for assistance in the XRD analyses.
Publisher Copyright:
© 2018 Elsevier B.V.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/7/5
Y1 - 2018/7/5
N2 - Rough and flat titanium dioxide (TiO2) surfaces were prepared, and the effect of water pH on the underwater wettability of oleic acid on the TiO2 surfaces was investigated. The underwater contact angle of oleic acid on the relatively flat TiO2 surface depended on the pH of water in the range pH 3–5. The repellency of oleic acid on the relatively flat TiO2 surface increased with decreasing pH. On the other hand, the hierarchical rough TiO2 surface repelled oleic acid in water, regardless of the pH of water.
AB - Rough and flat titanium dioxide (TiO2) surfaces were prepared, and the effect of water pH on the underwater wettability of oleic acid on the TiO2 surfaces was investigated. The underwater contact angle of oleic acid on the relatively flat TiO2 surface depended on the pH of water in the range pH 3–5. The repellency of oleic acid on the relatively flat TiO2 surface increased with decreasing pH. On the other hand, the hierarchical rough TiO2 surface repelled oleic acid in water, regardless of the pH of water.
KW - Oleic acid
KW - Superhydrophilicity
KW - TiO photocatalyst
KW - Underwater superoleophobicity
KW - pH
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U2 - 10.1016/j.colsurfa.2018.03.061
DO - 10.1016/j.colsurfa.2018.03.061
M3 - Article
AN - SCOPUS:85044580628
VL - 548
SP - 32
EP - 36
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
ER -