Underwater superoleophobicity of Nb2O5 photocatalyst surface

[Display omitted] •Flat Nb2O5 surface prepared by a sol-gel based method.•The sample exhibited UV-responsible photocatalytic self-cleaning property.•The sample exhibited excellent underwater superoleophobicity.•Nb2O5 is a promising candidate for high performance self-cleaning surface. The underwater...

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Bibliographic Details
Published inChemical physics letters Vol. 726; pp. 34 - 38
Main Authors Nishimoto, Shunsuke, Takiguchi, Takahiro, Kameshima, Yoshikazu, Miyake, Michihiro
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.07.2019
Subjects
Nb2O5 photocatalyst
Oleic acid
Self-cleaning
Superhydrophilicity
Underwater superoleophobicity
Underwater superoleophobicity
Self-cleaning
Oleic acid
Nb2O5 photocatalyst
Superhydrophilicity
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Summary:[Display omitted] •Flat Nb2O5 surface prepared by a sol-gel based method.•The sample exhibited UV-responsible photocatalytic self-cleaning property.•The sample exhibited excellent underwater superoleophobicity.•Nb2O5 is a promising candidate for high performance self-cleaning surface. The underwater oil wettability of a flat Nb2O5 photocatalyst surface prepared by a sol-gel based method was investigated. The Nb2O5 surface exhibited photocatalytic oxidation and photo-induced superhydrophilic properties under UV irradiation, and its activity was comparable to those of anatase-type TiO2 surfaces prepared by a sol-gel based method. The surface exhibited excellent underwater superoleophobicity toward n-hexadecane and oleic acid. The underwater oil repellency was superior to that of the TiO2 surface.
ISSN:0009-2614
1873-4448
DOI:10.1016/j.cplett.2019.04.031