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Enhanced photoinduced super-hydrophilicity in sol–gel TiO2 thin films with co-doped Sn/Nb

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Abstract

In this work, Sn and Nb co-doped TiO2 were coated on glazed porcelain substrates via sol–gel dip coating method. Field emission-scanning electron microscopy, transmission electron microscopy, and UV–vis spectrophotometer were used to evaluate thickness and optical properties of the thin films. Surface chemical state of thin films was examined by atomic X-ray photoelectron spectroscopy. Water contact angle on the film surfaces was measured by a contact angle analyzer under solar light irradiation. The optical results indicated that Sn/Nb dopant in TiO2 thin film changed the absorption edge from ultraviolet to visible light and exhibited excellent photo-catalytic ability for degradation of methylene blue solution under solar irradiation. Wettability results indicated that Sn and Nb dopant ions had significant effect on the hydrophilicity property of thin films.

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Authors and Affiliations

  1. Department of Materials Engineering, Faculty of Engineering, Malayer University, P.O.Box 65719-95863, Malayer, Iran

    Behzad Koozegar Kaleji

  2. Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, P.O.Box 14115-143, Tehran, Iran

    Navid Hosseinabadi

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  1. Behzad Koozegar Kaleji
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  2. Navid Hosseinabadi
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Correspondence to Behzad Koozegar Kaleji.

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Kaleji, B.K., Hosseinabadi, N. Enhanced photoinduced super-hydrophilicity in sol–gel TiO2 thin films with co-doped Sn/Nb. J Sol-Gel Sci Technol 69, 412–417 (2014). https://doi.org/10.1007/s10971-013-3235-y

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  • DOI: https://doi.org/10.1007/s10971-013-3235-y

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