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the flower-like biobr-wo₃-bi₂wo₆ (bob-wo-bwo) ternary hybrids were designed and synthesized by an effective two-step approach. specifically, wo₃ decroated bi₂wo₆ were prepared by one-step hydrothermal method and subsequent biobr layer via a cost-effective process. the photocatalysts were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electron microscopy (tem), energy dispersive x-ray spectroscopy (eds) and uv-vis diffuse reflectance spectroscopy (drs) etc. the results indicated that wo₃ nanoparticles and biobr small nanoplates could be dispersed on the surface of flower-like bi₂wo₆ and the biobr-wo₃-bi₂wo₆ ternary hybrids with suitable biobr content showed higher photocatalytic activity than that of pure bi₂wo₆. the enhanced photocatalytic activity of the biobr-wo₃-bi₂wo₆ was attributed to the cascade electrons transfer from bi₂wo₆ to biobr and then to wo₃ through the interfacial potential gradient in the ternary hybrid which prolong the lifetime of photo-generated charges. the photoluminescence and photo-electrochemical measurement have also verified that the suitable band potential of bi₂wo₆, wo₃ and biobr could help to achieve the efficient separation of photo-generated charges in the composite.

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详情可参考下面链接：

http://www.sciencedirect.com/science/article/pii/s0925838815308331