TiO2-based superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast

Shunsuke Nishimoto, Michiaki Becchaku, Yoshikazu Kameshima, Yuki Shirosaki, Satoshi Hayakawa, Akiyoshi Osaka, Michihiro Miyake

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Rough nanostructured anatase TiO2 surfaces containing many pores were prepared by the hydrothermal-based method. Surface modification with self-assembled monolayers (SAMs) of octadecylphosphonic acid (ODP) resulted in the superhydrophobic surface with an extremely high static water contact angle (CA) of 173.6°± 1.7°. This superhydrophobic surface could be converted into a superhydrophilic surface with a water CA of nearly 0°by irradiating it with ultraviolet (UV) light, which induced photocatalytic decomposition of the ODP SAM. A superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast (a water CA difference of over 170°) could be fabricated on the ODP-modified TiO2 surface by area-selective UV irradiation through a photomask. This is the report of the TiO2-based superhydrophobic-superhydrophilic pattern with a water CA difference of over 170°, and it may be possible to use such patterns for various applications.

Original languageEnglish
Pages (from-to)221-226
Number of pages6
JournalThin Solid Films
Volume558
DOIs
Publication statusPublished - May 2 2014

Fingerprint

wettability
Wetting
Contact angle
Water
Self assembled monolayers
Acids
water
acids
Photomasks
photomasks
Titanium dioxide
Surface treatment
anatase
ultraviolet radiation
Irradiation
Decomposition
porosity
decomposition
irradiation

Keywords

  • Photocatalyst
  • Self-assembled monolaye
  • Superhydrophobic-superhydrophilic pattern
  • Titanium dioxide
  • Wettability

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

TiO2-based superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast. / Nishimoto, Shunsuke; Becchaku, Michiaki; Kameshima, Yoshikazu; Shirosaki, Yuki; Hayakawa, Satoshi; Osaka, Akiyoshi; Miyake, Michihiro.

In: Thin Solid Films, Vol. 558, 02.05.2014, p. 221-226.

Research output: Contribution to journalArticle

Nishimoto, Shunsuke ; Becchaku, Michiaki ; Kameshima, Yoshikazu ; Shirosaki, Yuki ; Hayakawa, Satoshi ; Osaka, Akiyoshi ; Miyake, Michihiro. / TiO2-based superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast. In: Thin Solid Films. 2014 ; Vol. 558. pp. 221-226.
@article{9200b2c8c4b44b93be2687adde12714e,
title = "TiO2-based superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast",
abstract = "Rough nanostructured anatase TiO2 surfaces containing many pores were prepared by the hydrothermal-based method. Surface modification with self-assembled monolayers (SAMs) of octadecylphosphonic acid (ODP) resulted in the superhydrophobic surface with an extremely high static water contact angle (CA) of 173.6°± 1.7°. This superhydrophobic surface could be converted into a superhydrophilic surface with a water CA of nearly 0°by irradiating it with ultraviolet (UV) light, which induced photocatalytic decomposition of the ODP SAM. A superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast (a water CA difference of over 170°) could be fabricated on the ODP-modified TiO2 surface by area-selective UV irradiation through a photomask. This is the report of the TiO2-based superhydrophobic-superhydrophilic pattern with a water CA difference of over 170°, and it may be possible to use such patterns for various applications.",
keywords = "Photocatalyst, Self-assembled monolaye, Superhydrophobic-superhydrophilic pattern, Titanium dioxide, Wettability",
author = "Shunsuke Nishimoto and Michiaki Becchaku and Yoshikazu Kameshima and Yuki Shirosaki and Satoshi Hayakawa and Akiyoshi Osaka and Michihiro Miyake",
year = "2014",
month = "5",
day = "2",
doi = "10.1016/j.tsf.2014.02.060",
language = "English",
volume = "558",
pages = "221--226",
journal = "Thin Solid Films",
issn = "0040-6090",
publisher = "Elsevier",

}

TY - JOUR

T1 - TiO2-based superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast

AU - Nishimoto, Shunsuke

AU - Becchaku, Michiaki

AU - Kameshima, Yoshikazu

AU - Shirosaki, Yuki

AU - Hayakawa, Satoshi

AU - Osaka, Akiyoshi

AU - Miyake, Michihiro

PY - 2014/5/2

Y1 - 2014/5/2

N2 - Rough nanostructured anatase TiO2 surfaces containing many pores were prepared by the hydrothermal-based method. Surface modification with self-assembled monolayers (SAMs) of octadecylphosphonic acid (ODP) resulted in the superhydrophobic surface with an extremely high static water contact angle (CA) of 173.6°± 1.7°. This superhydrophobic surface could be converted into a superhydrophilic surface with a water CA of nearly 0°by irradiating it with ultraviolet (UV) light, which induced photocatalytic decomposition of the ODP SAM. A superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast (a water CA difference of over 170°) could be fabricated on the ODP-modified TiO2 surface by area-selective UV irradiation through a photomask. This is the report of the TiO2-based superhydrophobic-superhydrophilic pattern with a water CA difference of over 170°, and it may be possible to use such patterns for various applications.

AB - Rough nanostructured anatase TiO2 surfaces containing many pores were prepared by the hydrothermal-based method. Surface modification with self-assembled monolayers (SAMs) of octadecylphosphonic acid (ODP) resulted in the superhydrophobic surface with an extremely high static water contact angle (CA) of 173.6°± 1.7°. This superhydrophobic surface could be converted into a superhydrophilic surface with a water CA of nearly 0°by irradiating it with ultraviolet (UV) light, which induced photocatalytic decomposition of the ODP SAM. A superhydrophobic-superhydrophilic pattern with an extremely high wettability contrast (a water CA difference of over 170°) could be fabricated on the ODP-modified TiO2 surface by area-selective UV irradiation through a photomask. This is the report of the TiO2-based superhydrophobic-superhydrophilic pattern with a water CA difference of over 170°, and it may be possible to use such patterns for various applications.

KW - Photocatalyst

KW - Self-assembled monolaye

KW - Superhydrophobic-superhydrophilic pattern

KW - Titanium dioxide

KW - Wettability

UR - http://www.scopus.com/inward/record.url?scp=84898794462&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84898794462&partnerID=8YFLogxK

U2 - 10.1016/j.tsf.2014.02.060

DO - 10.1016/j.tsf.2014.02.060

M3 - Article

VL - 558

SP - 221

EP - 226

JO - Thin Solid Films

JF - Thin Solid Films

SN - 0040-6090

ER -