Hydrophilic Property

14,000,000 Leading Edge Experts on the ideXlab platform

Scan Science and Technology

Contact Leading Edge Experts & Companies

Scan Science and Technology

Contact Leading Edge Experts & Companies

The Experts below are selected from a list of 9996 Experts worldwide ranked by ideXlab platform

Kaishu Guan - One of the best experts on this subject based on the ideXlab platform.

  • effect of rare earth addition on super Hydrophilic Property of tio2 sio2 composite film
    Materials Chemistry and Physics, 2005
    Co-Authors: Kaishu Guan
    Abstract:

    Abstract Effects of CeO 2 or/and La 2 O 3 addition on photo-generated Hydrophilicity of TiO 2 /SiO 2 film were investigated in this paper with the testing of X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible spectroscopy (UV–vis) and scanning electron microscopy (SEM). It is found that appropriate amount of CeO 2 or/and La 2 O 3 is effective on the super-Hydrophilic Property of TiO 2 because of the increase of oxygen vacancies. The super-Hydrophilic Property of the composite film becomes better during UV irradiation and it can maintain for a long time in the dark with the synergetic effect of rare earth oxides and SiO 2 .

  • Effect of rare earth addition on super-Hydrophilic Property of TiO2/SiO2 composite film
    Materials Chemistry and Physics, 2005
    Co-Authors: Kaishu Guan
    Abstract:

    Abstract Effects of CeO 2 or/and La 2 O 3 addition on photo-generated Hydrophilicity of TiO 2 /SiO 2 film were investigated in this paper with the testing of X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible spectroscopy (UV–vis) and scanning electron microscopy (SEM). It is found that appropriate amount of CeO 2 or/and La 2 O 3 is effective on the super-Hydrophilic Property of TiO 2 because of the increase of oxygen vacancies. The super-Hydrophilic Property of the composite film becomes better during UV irradiation and it can maintain for a long time in the dark with the synergetic effect of rare earth oxides and SiO 2 .

  • enhanced effect and mechanism of sio2 addition in super Hydrophilic Property of tio2 films
    Surface & Coatings Technology, 2003
    Co-Authors: Kaishu Guan, Yansheng Yin
    Abstract:

    Abstract Relationship between the effect and the amount of SiO2 addition on the photo-generated Hydrophilicity of TiO2 films is investigated. X-ray diffraction, UV–Vis spectrum and Fourier transform infrared spectroscopy are used to determine film behavior and the Hydrophilicity is assessed by contact angle measurement. It is found that addition of 40 mol% SiO2 to TiO2 is most effective for reducing the contact angle of water. The contact angle of water can maintain low for a long time in dark place. SiO2 addition has a suppressive effect on the crystal growth of TiO2 in calcination and enhances the transmittance of the composite films. SiO2 and TiO2 form single oxide particles in the films, but a part of complex oxide may be formed. TiOSi bonds increase the acidity which induces the increasing of the hydroxyl content in the composite films.

Xiujian Zhao - One of the best experts on this subject based on the ideXlab platform.

  • effect of surface treatment on the photocatalytic activity and Hydrophilic Property of the sol gel derived tio2 thin films
    Materials Research Bulletin, 2001
    Co-Authors: Jiaguo Yu, Xiujian Zhao
    Abstract:

    Transparent anatase TiO2 nanometer thin films were prepared via the sol-gel method on soda-lime glass, and then the as-prepared TiO2 films were treated in HCl solution. The TiO 2 films before and after treatment were characterized by X-ray photoelectron spectroscopy, scanning electron microscopy, and UV-visible spectrophotometer. The photocatalytic activity and Hydrophilic Property of the various TiO2 films were evaluated by the photocatalytic decolorization of aqueous methyl orange and examining the contact angle for water of TiO2 films, respectively. The concentration of sodium and calcium in nascent TiO2 films was effectively reduced and the adsorbed hydroxyl content on the surface of TiO 2 films was found to increase by soaking the as-prepared TiO 2 films in HCl solution. The deleterious effect of sodium and calcium ions from the soda-lime glass on the photocatalytic activity of the nascent TiO2 films was prevented by surface acid treatment. At the same time, Hydrophilic Property of the treated TiO2 films was enhanced. © 2001 Elsevier Science Ltd. All rights reserved.

Kazuhito Hashimoto - One of the best experts on this subject based on the ideXlab platform.

  • interfacial structure dependence of layered tio2 wo3 thin films on the photoinduced Hydrophilic Property
    Vacuum, 2004
    Co-Authors: Hiroshi Irie, Hisashi Mori, Kazuhito Hashimoto
    Abstract:

    Abstract Layered-type TiO2/WO3 thin films were fabricated by sol–gel and sputtering methods and the effects of those different fabricating methods on the interfacial structures and the photoinduced Hydrophilic properties were investigated. A third amorphous phase was observed by cross-sectional transmission electron micrograph at the interface of the sol–gel derived TiO2/WO3 thin film, but was not at that of the sputtered TiO2/WO3 thin film. Under weak ultra-violet light irradiation with intensity of 0.05 mW/cm2, the photoinduced Hydrophilic Property on the sputtered thin film was superior to that on the sol–gel thin film. These results suggest that the interfacial third phase acts as a barrier against holes and electrons’ transfer and degrades the photoinduced Hydrophilic Property.

  • Interfacial structure dependence of layered TiO2/WO3 thin films on the photoinduced Hydrophilic Property
    Vacuum, 2004
    Co-Authors: Hiroshi Irie, Hisashi Mori, Kazuhito Hashimoto
    Abstract:

    Abstract Layered-type TiO2/WO3 thin films were fabricated by sol–gel and sputtering methods and the effects of those different fabricating methods on the interfacial structures and the photoinduced Hydrophilic properties were investigated. A third amorphous phase was observed by cross-sectional transmission electron micrograph at the interface of the sol–gel derived TiO2/WO3 thin film, but was not at that of the sputtered TiO2/WO3 thin film. Under weak ultra-violet light irradiation with intensity of 0.05 mW/cm2, the photoinduced Hydrophilic Property on the sputtered thin film was superior to that on the sol–gel thin film. These results suggest that the interfacial third phase acts as a barrier against holes and electrons’ transfer and degrades the photoinduced Hydrophilic Property.

  • the effect of sio2 addition in super Hydrophilic Property of tio2 photocatalyst
    Journal of Materials Science, 1999
    Co-Authors: Mitsuyoshi Machida, Kazuhito Hashimoto, Keiichiro Norimoto, Toshiya Kitakyushu Watanabe, A Fujishima
    Abstract:

    The relation between the effect and the amount of SiO2 addition on photo-generated Hydrophilicity of TiO2 thin film, was investigated by measuring the X-ray diffraction, the microstructure, the specific surface area and the TG-DTA. It was found that the optimum range existed in the amount of SiO2 addition to TiO2, 10–30 mol % SiO2 addition was most effective for contact angle of water. The SiO2 addition less than 30 mol % has a suppressive effect on the transformation of anatase to rutile and on the crystal growth of anatase in calcination, and it has large surface area. With the consequence that the photocatalytic activity of TiO2 and the capability of holding absorbed water which increases during UV irradiation improved.

Lek Sikong - One of the best experts on this subject based on the ideXlab platform.

  • influence of n doped tio2 nanocomposite film on Hydrophilic Property of rubber dipping former surface
    Key Engineering Materials, 2014
    Co-Authors: Mahamasuhaimi Masae, Lek Sikong, Kalayanee Kooptarnond, Wirach Taweepreda, Fumio Saito, Pichaya Pitsuwan
    Abstract:

    The objective of this study is to explore a method to improve Hydrophilicity of the surface of formers that could be more easily dipped to produce high quality dipped rubber products. Photocatalytic TiO2 composite films were prepared by sol-gel method. Glass formers were coated with nitrogen doped TiO2 nanocomposite film by dipping method and annealed at 600°C for 1 h. Phase formation of TiO2 was characterized by XRD. Morphology of the TiO2 films was observed by using atomic force microscopy (AFM). Optical absorption of the films and degradation concentration of methylene blue had been measured employing UV-Vis spectrophotometer. The Hydrophilicity of the thin films was determined in terms of the contact angles of water and NR rubber latex droplets on the coated TiO2 composite films under visible light irradiation. It was found from the experimental study that the TiO2 nano-composite film can improve wet-ability of the coated former surfaces.

  • influence of ni b n tio2 nanocomposite film on Hydrophilic Property of rubber dipping former surface
    Advanced Materials Research, 2014
    Co-Authors: Mahamasuhaimi Masae, Lek Sikong, Kalayanee Kooptarnond, Wirach Taweepreeda, Fumio Saito
    Abstract:

    The objective of this study is to explore a method to improve Hydrophilicity of the surface of formers that could be more easily dipped to produce high quality dipped rubber products. Photocatalytic TiO2 composite films were prepared by sol-gel method. Glass formers were coated with the Ni/B/N/TiO2 nanocomposite film by dipping method and annealed at 400°C for 1 h. Phase formation of TiO2 was characterized by XRD. Morphology of the TiO2 films was observed by using atomic force microscopy (AFM). Optical absorption of the films and degradation concentration of methylene blue had been measured employing UV-Vis spectrophotometer. The Hydrophilicity of the thin films was determined in terms of the contact angles of water and NR rubber latex droplets on the coated TiO2 composite films under visible light irradiation. It was found from the experimentally study that the Ni/B/N/TiO2 nanocomposite film can improve wet-ability of the coated former surfaces.

  • improvement of Hydrophilic Property of rubber dipping former surface with ni b tio2 nano composite film
    Applied Surface Science, 2012
    Co-Authors: Lek Sikong, Kalayanee Kooptarnond, Mahamasuhaimi Masae, Wirach Taweepreda, Fumio Saito
    Abstract:

    Abstract The objective of this study is to explore a method to improve Hydrophilicity of the surface of formers that could be more easily dipped to produce high quality dipped rubber products. Photocatalytic TiO 2 composite films were prepared by sol–gel method. Glass formers were coated with the Ni/B/TiO 2 nano-composite film by dipping method and annealed at 400 °C for 1 h. Phase formation of TiO 2 was characterized by XRD. Morphology of the TiO 2 films was observed by using atomic force microscopy (AFM). Optical absorption of the films and degradation concentration of methylene blue had been measured employing UV–vis spectrophotometer. The Hydrophilicity of the thin films was determined in terms of the contact angles of water and NR rubber latex droplets on the coated TiO 2 composite films with and without UV irradiation. It was found from the experimental study that the Ni/B/TiO 2 nano-composite film can improve wet-ability of the coated former surfaces, leading to enhancement of tensile strengths of the vulcanized natural rubber (NR) latex films.

  • Photoactivity and Hydrophilic Property of SiO 2 and SnO 2 co-doped TiO 2 nano-composite thin films
    2010
    Co-Authors: Lek Sikong, Kalayanee Kooptarnond, Sutham Niyomwas, Jiraporn Damchan
    Abstract:

    SiO 2 and SnO 2 co-doped TiO 2 nano-composite thin films were prepared by sol-gel method. The effects of film thickness and amount of SiO 2 and SnO 2 co-doping into TiO 2 nano-composite films on phase presence, crystallite size, photocatalytic reaction and Hydrophilicity were investigated. Thickness of 3-coating layers (238 nm) seems to provide the highest photocatalytic activity. The crystallinity of anatase phases, crystallite sizes and photocatalytic reactions of SiO 2 and SnO 2 co-doped TiO 2 films decrease with an increase in SiO 2 content. It was found that more amount of SiO 2 addition seems to inhibit grain growth and the formation of anatase phase; especially when it was synthesized at temperature less than 600°C. The photocatalytic reaction seems to decrease with an increase in SiO 2 doping when the concentrations of SnO 2 in the composite films are fixed. It was apparent that 1SiO 2 /1SnO 2 /TiO 2 composite film exhibits the highest photoactivity. Suitable amounts of SiO 2 and SnO 2 doping into the TiO 2 composite films tend to enhance the Hydrophilic Property of the films. It was also apparent that the 3SiO 2 /3SnO 2 /TiO 2 , 5SiO 2 /5SnO 2 /TiO 2 and 10SiO 2 /3SnO 2 /TiO 2 composite films exhibit super Hydrophilic characteristics under UV irradiation for 30 min.

M.c. Kim - One of the best experts on this subject based on the ideXlab platform.

Related terms

Hydrophilic Property - 15 days free trial to Access Experts & Abstracts