NaYF4:Er,Yb/Bi2MoO6 core/shell nanocomposite: A highly efficient visible-light-driven photocatalyst utilizing upconversion

Yuanyuan Sun, Wenzhong Wang, Songmei Sun, Ling Zhang

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    NaYF4:Er,Yb/Bi2MoO6 core/shell nanocomposite was designed and prepared for the first time based on upconversion. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution TEM (HRTEM), energy dispersive X-ray spectroscopy (EDS) and diffuse reflectance spectra (DRS). The results revealed that the as-synthesized NaYF4:Er,Yb/Bi 2MoO6 consisted of spheres with a core diameter of about 26 nm and a shell diameter of around 6 nm. The core was upconversion illuminant NaYF4:Er,Yb and the shell was Bi2MoO6 around the core, which was confirmed by EDS. The NaYF4:Er,Yb/Bi 2MoO6 exhibited higher photocatalytic activity for the photodecomposition of Rhodamine B (RhB) under the irradiation of Xe lamp and green light emitting diode (g-LED). The mechanism of the high photocatalytic activity was discussed by photoluminescence spectra (PL), which is mainly attributed to upconversion of NaYF4:Er,Yb in the NaYF 4:Er,Yb/Bi2MoO6 nanocomposite and the core-shell structure.

    Original languageEnglish
    Pages (from-to)50-55
    Number of pages6
    JournalMaterials Research Bulletin
    Volume52
    DOIs
    Publication statusPublished - Apr 2014

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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