Search Results 1-20 of 28

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  • Effect of relative humidity on water contact angle on TiO<sub>2</sub> single crystals: behavior of photoinduced hydrophilicity after turning off UV irradiation

    Ikuma Yasuro , Suzuki Hirotaka , Hokari Daiki , Maruyama Takemi , Niwa Koichi

    … The formation of -OH groups is considered to be responsible for the hydrophilicity; … therefore, it is possible that the relative humidity in the atmosphere has an effect on the hydrophilicity response. …

    Transactions of the Materials Research Society of Japan 44(6), 211-215, 2019

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  • Effect of Addition of Surfactant to the Surface Hydrophilicity and Photocatalytic Activity of Immobilized Nano-TiO<sub>2</sub> Thin Films

    Mariquit Eden G. , Kurniawan Winarto , Miyauchi Masahiro , Hinode Hirofumi

    … Aside from the photocatalytic performance, the photoinduced hydrophilicity of thin TiO<sub>2</sub> … As for surface wettability, the addition of surfactant has a positive effect on the photoinduced surface hydrophilicity of the TiO<sub>2</sub> …

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 48(10), 856-861, 2015

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  • Crystal-face Dependence of Photoinduced Hydrophilic Conversion on SrTiO_3 Surfaces

    KATSUMATA Ken-ichi , OKAYASU Yuki , MATSUSHITA Nobuhiro , OKADA Kiyoshi

    … The photoinduced hydrophilicity of SrTiO<sub>3</sub> …

    Chemistry Letters 42(6), 618-620, 2013-06-05

    J-STAGE  References (21)

  • Synthesis of photofunctional ceramics by various solution processes

    TOMITA Koji

    … showed photoinduced hydrophilicity, and the hydrophilic state was maintained for 5 days in darkness. …

    Journal of the Ceramic Society of Japan 121(1417), 841-846, 2013

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  • Photocatalytic activity and photoinduced hydrophilicity of brookite-heteropolyacid hybrid films  [in Japanese]

    Kunchaya Pruethiarenun , Isobe Toshihiro , Matsushita Sachiko , Nakajima Akira

    ブルッカイトとヘテロポリ酸(PW12)のハイブリッド透明薄膜を交互積層法により作製し、その光触媒活性と、光誘起親水性を比較した。薄膜は300度で熱処理し、PW12をブルッカイト表面に固定した。PW12を薄膜表面に付けることによりブルッカイトのIPA分解活性も、光誘起親水化活性も向上した。また親水化後の暗所で親水性の維持性も向上した。この結果について、濡れ仕事量の変化と、表面での親水-疎水領域の分布 …

    Preprints of Annual Meeting of The Ceramic Society of Japan<br>Preprints of Fall Meeting of The Ceramic Society of Japan 2012S(0), 24-24, 2012

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  • Photoinduced hydrophilicity of bronze type TiO<SUB>2</SUB>  [in Japanese]

    Yamamoto Kazuhiro , Tomita Koji , Miura Yasuyuki , Kakihana Masato

    酸化チタン(TiO2)は紫外光を照射することで脱臭、抗菌、有害な有機物の分解や光誘起親水性などの機能を示す半導体光触媒である。TiO2にはrutile、anatase、brookite、bronze型構造などの多形が存在し、これまでにもrutile、anataseを用いたTiO2薄膜の光誘起親水性の報告がされているが、準安定相であるbronze型TiO2薄膜の光誘起親水性の報告はまだない。本研究で …

    Preprints of Annual Meeting of The Ceramic Society of Japan<br>Preprints of Fall Meeting of The Ceramic Society of Japan 2011S(0), 608-608, 2011

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  • Photoinduced Surface Friction Force Change of Polycrystalline Rutile Ceramics under UV Irradiation  [in Japanese]

    Okudaira Kenji , Isobe Toshihiro , Matsushita Sachiko , Nakajima Akira , Kato Tomoya , Kogure Toshihiro

    ルチル多結晶体表面の各粒子の表面の摩擦力の変化を、摩擦力顕微鏡(FFM)を用いて評価し、酸化チタンの光誘起親水化に及ぼす微構造の影響について検討した。大気中でルチル表面に紫外線を照射し、約70の粒子について摩擦力変化を調査したところ、照射時間に対して表面の摩擦力がいったん増加した後に減少し、その後再度徐々に増加に転じる傾向が確認された。このような摩擦力の変化とその雰囲気依存性の機構を、光誘起親水化 …

    Preprints of Annual Meeting of The Ceramic Society of Japan<br>Preprints of Fall Meeting of The Ceramic Society of Japan 2011S(0), 193-193, 2011

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  • Coating of Transparent Ti-containing Mesoporous Silica Thin Films on Quartz and Aluminum Alloy Substrates for Fabrication of Highly Hydrophilic Surfaces

    HORIUCHI Yu , URA Haruhisa , YOO Hye-jin , KAMEGAWA Takashi , MORI Kohsuke , NISHIYAMA Norikazu , YAMASHITA Hiromi

    … It can be interpreted that the capillary condensation due to the mesoporous structure and the presence of isolated titanium oxide species as adsorption sites of water contributed to the appearance of the high hydrophilicity. … Furthermore, the irradiation of UV-light led to the decrease in water contact angles on Ti-MSTFs and it was found that Ti-MSTFs exhibited the photoinduced superhydrophilic properties. …

    ISIJ International 50(2), 255-258, 2010-02-15

    J-STAGE  References (33)

  • Preparation of Thin Macroporous TiO2 Films Using PMMA Microspheres and Their Photoinduced Hydrophilicities

    Kamegawa Takashi , Suzuki Norihiko , Yamashita Hiromi

    … It was also found that the photoinduced hydrophilicity under UV light as well as the durability of hydrophilic surface in the dark was enhanced on thin macroporous TiO<SUB>2</SUB> …

    Chemistry Letters 38(6), 610-611, 2009

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  • Mechanism of Hydrophilicity by Radiation-Induced Surface Activation

    HONJO Yoshio , FURUYA Masahiro , TAKAMASA Tomoji , OKAMOTO Koji

    … This surface phenomenon is called as radiation-induced surface activation (RISA) hydrophilicity. … In order to investigate gamma ray-induced and photoinduced hydrophilicity, the contact angles of water droplets on a titanium dioxide surface were measured in terms of irradiation intensity and time for gamma rays of cobalt-60 and for ultraviolet rays. … This clearly indicates that certain humidity is required in ambient gas to take place of RISA hydrophilicity. …

    Journal of Power and Energy Systems 3(1), 216-227, 2009

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  • Photoinduced hydrophilic property of zinc oxide thin films prepared by sol-gel dip coating method

    NUMPUD P. , CHARINPANITKUL T. , TANTHAPANICHAKOON W.

    … The film characteristics (roughness, transparency and photoinduced hydrophilicity) were characterized by atomic force microscopy, UV-vis spectrophotoscopy and contact angle analyzer, respectively. … zinc precursor could result in a decrease in the film thickness and the film roughness, consequently leading to highly photoinduced hydrophilicity.<br> …

    Journal of the Ceramic Society of Japan 116(1351), 414-417, 2008-03-01

    J-STAGE  References (13)

  • Rutile-Type TiO_2 Thin Films Quasi-Epitaxial Grown by Sputter Deposition  [in Japanese]

    TAKAO Hiroki , MIYAJIMA Hidekazu , MOURI Kengo , MIYOSHI Toru , ARITA Makoto , MASUDA Masataka

    日本金屬學會誌 = Journal of the Japan Institute of Metals 72(3), 211-215, 2008-03-01

    References (20)

  • Effect of Photoetching on Photoinduced Hydrophilicity of Titanium Dioxide Film

    SUGIURA Takashi , KATOU Mitsuhiro , MINOURA Hideki

    Electrochemistry 76(2), 154-157, 2008-02-05

    References (14)

  • Rutile-Type TiO<sub>2</sub> Thin Films Quasi-Epitaxial Grown by Sputter Deposition  [in Japanese]

    Takao Hiroki , Miyajima Hidekazu , Mouri Kengo , Miyoshi Toru , Arita Makoto , Masuda Masataka

      Titanium dioxide (TiO<sub>2</sub>) has been known as a photocatalyst. It is generally said the photocatalytic activity of anatase phase is superior to that of rutile phase desp …

    Journal of the Japan Institute of Metals and Materials 72(3), 211-215, 2008

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  • Preparation of Superhydrophilic Mesoporous Silica Thin Films Containing Single-site Photocatalyst (Ti, V, Cr, Mo, and W oxide moieties)

    Horiuchi Yu , Mori Kohsuke , Nishiyama Norikazu , Yamashita Hiromi

    … All Me-MSTFs have exhibited strong hydrophilic surface properties even before UV-light irradiation and showed photoinduced superhydrophilic properties after UV-light irradiation. … Among examined samples, the W-MSTF showed the highest hydrophilicity. …

    Chemistry Letters 37(7), 748-749, 2008

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  • Effect of Photoetching on Photoinduced Hydrophilicity of Titanium Dioxide Film

    SUGIURA Takashi , KATOU Mitsuhiro , MINOURA Hideki

    … The effect of photoetching (photoelectrochemical etching) on photoinduced hydrophilic conversion of titanium dioxide (TiO<sub>2</sub>) film electrodes prepared by thermal oxidation of Ti plate has been studied. … and improves the photoinduced hydrophilic conversion property. …

    Electrochemistry 76(2), 154-157, 2008

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  • Visible-Light-Induced Hydrophilic Conversion of an S-Doped TiO_2 Thin Film and Its Photocatalytic Activity for Decomposition of Acetaldehyde in Gas Phase

    NISHIJIMA Kazumoto , NAITOH Hitoshi , TSUBOTA Toshiki , OHNO Teruhisa

    S-doped titanium dioxide thin films were found to undergo hydrophilic conversion under visible light irradiation. The water contact angle for the S-doped TiO<sub>2</sub> thin film reached …

    Journal of the Ceramic Society of Japan 115(1341), 310-314, 2007-05-01

    IR  J-STAGE  References (25)

  • Photoinduced hydrophilicity and friction force change of titanium dioxide thin film  [in Japanese]

    Arimitsu Naoki , Nakajima Akira , Kameshima Yoshikazu , Okada Kiyoshi

    酸化チタン表面に紫外光照射を行うことにより、水との接触角がほぼ0oとなる光誘起親水化現象が発現することが知られている。アナターゼ多結晶薄膜の親水化の機構については、様々な結晶方位でランダムに配置している粒子間で親水化速度にバラつきが存在し、このことが親水部と疎水部を生じて2次元キャピラリー効果を生むためであるというモデルが掲示されている1)。これまでに紫外光照射による酸化チタン薄膜表面の親水部の増 …

    Preprints of Annual Meeting of The Ceramic Society of Japan<br>Preprints of Fall Meeting of The Ceramic Society of Japan 2007S(0), 136-136, 2007

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  • Photoinduced Hydrophilicity and Structural Evaluation of SiOx:OH/TiO2 Multilayer Films by DC Reactive Magnetron Sputtering

    NOGUCHI D. , Sakai Tetsuya , Nagatomo Takao

    Japanese journal of applied physics Pt. 1 Regular papers, brief communications & review papers 45(3A), 1775-1782, 2006-03

    DOI  Cited by (2)

  • Study of photoinduced roughness change for polycrystalline anatase thin films

    Katsumata Kenichi , Kameshima Yoshikazu , Nakajima Akira , Okada Kiyoshi

    近年、多結晶アナターゼ薄膜は適当な強度の紫外線を照射することにより水との接触角がほぼ0°の超親水化状態を示すことが知られているが、その一方で光照射によって膜表面が硬くなることや表面粗さが変化することが報告されている。これは、光照射によって膜の表面微構造が変化したことによって膜表面に応力が働いている可能性を示唆している。しかし、光照射による膜表面の応力変化に関する詳細な調査は行われてない。そこで本研 …

    Preprints of Annual Meeting of The Ceramic Society of Japan<br>Preprints of Fall Meeting of The Ceramic Society of Japan 2006S(0), 303-303, 2006

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