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Dramatic Activity of C_3N_4/BiPO_4 Photocatalyst with Core/ Shell Structure Formed by Self-Assembly

机译：自组装形成核/壳结构的C_3N_4 / BiPO_4光催化剂的剧烈活性

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摘要

Core/shell structured C_3N_4/BiPO_4 photocatalyst is fabricated via a facile ultrasonic dispersion method. The thickness of the shell may be controlled by tuning the amount of C_3N_4 in the dispersion, which determines the enhanced level of photocatalytic activity. The optimum photocatalytic activity of C_3N_4/ BiPO_4 at a weight ratio of 4% (C_3N_4/BiPO_4) under UV irradiation is almost 4.5 times as high as that of reference P25 (TiO_2) and 2.5 times of BiPO_4.More attractively, the dramatic visible light photocatalytic activity is generated due to the C_3N_4 loaded. The enhancement in performance is demonstrated to be the match of lattice and energy level between the C_3N_4 and BiPO_4. This match facilitates the separation and transfer of photogenerated electronhole pairs at the heterojunction interfaces and may be important for other core/shell structured materials. In addition, this method is expected to be extended for other C_3N_4 loaded materials.
机译：核/壳结构的C_3N_4 / BiPO_4光催化剂是通过简便的超声分散方法制备的。壳的厚度可以通过调节分散体中C_3N_4的量来控制，这确定了提高的光催化活性水平。重量比为4％（C_3N_4 / BiPO_4）时，C_3N_4 / BiPO_4的最佳光催化活性几乎是参比P25（TiO_2）的4.5倍和BiPO_4的2.5倍。由于装载了C_3N_4，因此产生了光催化活性。性能的增强被证明是C_3N_4和BiPO_4之间的晶格和能级的匹配。这种匹配促进了异质结界面处光生电子空穴对的分离和转移，对于其他核/壳结构材料可能很重要。此外，预计该方法将扩展到其他C_3N_4加载材料。

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  • 来源
    《Advanced Functional Materials》 |2012年第7期|p.1518-1524|共7页
  • 作者

    Chengsi Pan; JingXu; Yajun Wang; Di Li; Yongfa Zhu;

  • 作者单位

    Department of Chemistry Tsinghua University Beijing, 100084, P. R. China;

    Department of Chemistry Tsinghua University Beijing, 100084, P. R. China;

    Department of Chemistry Tsinghua University Beijing, 100084, P. R. China;

    Department of Chemistry Tsinghua University Beijing, 100084, P. R. China;

    Department of Chemistry Tsinghua University Beijing, 100084, P. R. China;

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