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    Hierarchical ordered macro/mesoporous titania with a highly interconnected porous structure for efficient photocatalysis

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    Date
    2016
    Author
    Zhao, Tao
    Ren, Yuan
    Yang, Jianping
    Wang, Lianjun
    Jiang, Wan
    Elzatahry, Ahmed A.
    Alghamdi, Abdulaziz
    Deng, Yonghui
    Zhao, Dongyuan
    Luo, Wei
    ...show more authors ...show less authors
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    Abstract
    In this study, a 3-dimensional interconnected hierarchical ordered macro/mesoporous titania (HOPT) with thin walls, crystalline framework, large cavities (?420 nm), uniform mesopores (3.7 nm) and high surface area (177 m2 g-1) was synthesized through a facile bi-template interface-directed deposition method using poly(propylene oxide)-block-poly(ethylene oxide)-block-poly(propylene oxide) (Pluronic P123) triblock polymer as a soft template and structure directing agent, titanium isopropoxide (TIPO) as a titania source and 3-dimensional ordered macroporous carbon (3DOMC) as the hard template and the nanoreactor. This was followed with a two-step thermal treatment in nitrogen and air. Under simulated sunlight irradiation at room temperature, the HOPT shows an ultrahigh photocatalytic activity for the degradation of Rhodamine B (RhB) with a fast reaction rate that is three times higher than commercial titania nanoparticles (P25). 2016 The Royal Society of Chemistry.
    DOI/handle
    http://dx.doi.org/10.1039/c6ta06849a
    http://hdl.handle.net/10576/22921
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