3D Bi2WO6/TiO2 hierarchical heterostructure: Controllable synthesis and enhanced visible photocatalytic degradation performances

Meng Shang, Wenzhong Wang, Ling Zhang, Songmei Sun, Lu Wang, Lin Zhou

    研究成果: Contribution to journalArticle査読

    253 被引用数 (Scopus)

    抄録

    A three-dimensional (3D) multicomponent oxide, Bi2WO 6/TiO2 as an example, hierarchical heterostructure was successfully synthesized as a mat via a simple and practical electrospinning-assisted route. The asprepared hierarchical nanofibrous mat consisted of Bi2WO6 nanoplates growing aslant on the primary TiO2 nanofibers. Interestingly, the nanoplates were further composed of nanoparticles with a size of less than 20 nm. Bi2WO 6 with different morphologies and microstructures could be obtained by adjusting the concentration of the precursor. From the mat (10 cm) to the nanoparticle (20 nm), this multicomponent oxide mat due to the self-supporting property could be layed or hung conveniently anywhere under solar irradiation and recycled easily. Due to the structure-property relationships, the 3D Bi 2WO6/TiO2 hierarchical heterostructure exhibited enhanced visible photocatalytic activity over that of the bulk Bi 2WO6/TiO2 powder (SSR), the Bi 2WO6 nanoparticles (BWO), and the TiO2 sample in the decomposition of both acetaldehyde (CH3CHO) in air and rhodamine B (RhB) in water which are typical model pollutants. Close investigation revealed that the surface area, grain size, and hierarchical heterostructure of the as-prepared Bi2WO6/TiO2 mat could improve the photocatalytic activities.

    本文言語英語
    ページ(範囲)14727-14731
    ページ数5
    ジャーナルJournal of Physical Chemistry C
    113
    33
    DOI
    出版ステータス出版済み - 8 20 2009

    All Science Journal Classification (ASJC) codes

    • 電子材料、光学材料、および磁性材料
    • エネルギー(全般)
    • 物理化学および理論化学
    • 表面、皮膜および薄膜

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