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首页> 外文期刊>Crystal growth & design >pH Controlled Excellent Photocatalytic Activity of a Composite Designed from CuBi-Based Metal Organic Oxide and Graphene
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pH Controlled Excellent Photocatalytic Activity of a Composite Designed from CuBi-Based Metal Organic Oxide and Graphene

机译：pH控制由古基金属有机氧化物和石墨烯设计的复合材料的优异光催化活性

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摘要

A CuBi-bearing mixed metal organic oxide (MOO) combined with graphene as a heterogeneous composite photocatalyst (CuBi-MOO/Gr) has been synthesized via a one pot hydrothermal method. Raman spectroscopy data and TEM images confirm the presence of graphene on the surfaces of the crystalline particles of the as-prepared CuBi-MOO/Gr sample. The energy gap of CuBi-MOO/Gr is about 2.67 eV which means that the composite can absorb light both in visible and UV regions. The photocatalytic study of Rhodamine B (RhB) with varied pH values (from 1.82 to 11.50) using CuBi-MOO/Gr and CuBi-MOO as photocatalyst, respectively, is performed and compared indicating the high structural stability of the as-prepared CuBi-MOO/Gr composite. The unique photocatalytic results show that within 10 min almost 100% of degradation of RhB in aqueous solution is achieved at pH = 1.82 under visible light irradiation, and the composite is reusable with high stability. One very interesting phenomenon is that, at pH of 1.82, RhB is significantly observed to be adsorbed by simply adding CuBi-MOO/Gr without any light irradiation indicating CuBi-MOO/Gr is a better adsorbent for RhB than CuBi-MOO under dark acidic conditions.
机译：通过一种罐水热法合成了作为非均相复合光催化剂（CUBI-MOO / GR）合成的突出的混合金属有机氧化物（MOO）与石墨烯相结合。拉曼光谱数据和TEM图像确认了制备的副MOO / GR样品的结晶颗粒表面上的石墨烯。 CUBI-MOO / GR的能隙约为2.67eV，这意味着复合材料可以在可见和UV区域中吸收光。分别使用Cubi-Moo / GR和Cubi-Moo作为光催化剂的具有变化的pH值（从1.82-11.50）的罗丹明B（RHB）的光催化研究，并比较标制的立方体的高结构稳定性 - moo / gr复合材料。独特的光催化结果表明，在可见光照射下在pH = 1.82下在水溶液中达到10分钟内的10％rHB降解，并且复合材料具有高稳定性可重复使用。一种非常有趣的现象是，在1.82的pH下，通过简单地添加Cubi-Moo / GR，显着观察到rHB吸附，无需任何光照射，所述光辐射表明CUBI-MOO / GR在黑酸下比幼崽的RHB更好的吸附剂状况。

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  • 来源
    《Crystal growth & design》 |2018年第9期|共9页
  • 作者

    Shi Fa-Nian; Lu Miao; Bai Yi-Wen; Liang Fang; Song Xiao-Yi; Xu Ge; Fan Xiao-Qiang; Yu Xue-Hua; You Hong-Peng; Zhao Zhen;

  • 作者单位

    Shenyang Univ Technol Sch Sci Econ &

    Technol Dev Zone 111 Shenliao West Rd Shenyang 110870 Liaoning Peoples R China;

    Shenyang Univ Technol Sch Sci Econ &

    Technol Dev Zone 111 Shenliao West Rd Shenyang 110870 Liaoning Peoples R China;

    Shenyang Univ Technol Sch Sci Econ &

    Technol Dev Zone 111 Shenliao West Rd Shenyang 110870 Liaoning Peoples R China;

    Shenyang Univ Technol Sch Sci Econ &

    Technol Dev Zone 111 Shenliao West Rd Shenyang 110870 Liaoning Peoples R China;

    Shenyang Univ Technol Sch Sci Econ &

    Technol Dev Zone 111 Shenliao West Rd Shenyang 110870 Liaoning Peoples R China;

    Shenyang Univ Technol Sch Sci Econ &

    Technol Dev Zone 111 Shenliao West Rd Shenyang 110870 Liaoning Peoples R China;

    Shenyang Normal Univ Inst Catalysis Energy &

    Environm Shenyang 110034 Liaoning Peoples R China;

    Shenyang Normal Univ Inst Catalysis Energy &

    Environm Shenyang 110034 Liaoning Peoples R China;

    Chinese Acad Sci Changchun Inst Appl Chem State Key Lab Rare Earth Resource Utilizat Changchun 130022 Jilin Peoples R China;

    Shenyang Normal Univ Inst Catalysis Energy &

    Environm Shenyang 110034 Liaoning Peoples R China;

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  • 正文语种 eng
  • 中图分类 晶体学;
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