High-Performance Multifunctional TiO2 Nanowire Ultrafiltration Membrane with a Hierarchical Layer Structure for Water Treatment

Authors

  • Xiwang Zhang,

    Corresponding author
    1. School of Civil and Environmental Engineering Nanyang Technological University 639798 Singapore (Singapore)
    • School of Civil and Environmental Engineering Nanyang Technological University 639798 Singapore (Singapore).
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  • Tong Zhang,

    1. School of Civil and Environmental Engineering Nanyang Technological University 639798 Singapore (Singapore)
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  • Jiawei Ng,

    1. School of Civil and Environmental Engineering Nanyang Technological University 639798 Singapore (Singapore)
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  • Darren Delai Sun

    Corresponding author
    1. School of Civil and Environmental Engineering Nanyang Technological University 639798 Singapore (Singapore)
    • School of Civil and Environmental Engineering Nanyang Technological University 639798 Singapore (Singapore).
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Abstract

A novel, multifunctional TiO2 nanowire ultrafiltration (UF) membrane with a layered hierarchical structure is made via alkaline hydrothermal synthesis, followed by a filtration and hot-press process. The TiO2 UF membrane has high surface porosity (21.3%) and pore size values around 20 nm. The membrane possesses multifunctional capabilities under UV irradiation, such as anti-fouling, anti-bacterial, concurrent separation, and photocatalytic oxidation. The unique properties of the membrane indicate its potential in applications for environmental purification.

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