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首页> 外文期刊>RSC Advances >Novel beta-In2.77S4 nanosheet-assembled hierarchical microspheres: synthesis and high performance for photocatalytic reduction of Cr(VI)
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Novel beta-In2.77S4 nanosheet-assembled hierarchical microspheres: synthesis and high performance for photocatalytic reduction of Cr(VI)

机译：新型Beta-In2.77S4纳米片组合的分层微球：Cr（VI）光催化还原的合成和高性能

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摘要

A novel nanosheet-assembled hierarchical sulfur-deficient beta-In2.77S4 microsphere photocatalyst was prepared via a facile hydrothermal method. The phase evolution and possible formation mechanism of the nanosheet-assembled hierarchical beta-In2.77S4 microspheres have been explored by virtue of temperature-and time-dependent experiments. The results demonstrated that the beta-In2.77S4 microspheres were composed of many thin nanosheets, and underwent the Oswald ripening and self-assembly processes. This unique hierarchical structure showed faster charge separation efficiency of photogenerated electron-hole pairs. It was found that the product synthesized under suitable hydrothermal conditions showed a large specific surface area (157.86 m(2) g(-1)) and high visible light photocatalytic activity in the reduction of aqueous Cr(VI). The highest activity is obtained for beta-In2.77S4 (140 degrees C, 24 h), over which more than 99% of Cr(VI) was reduced after 50 min. The results suggested that nanosheet-assembled hierarchical beta-In2.77S4 microspheres have potential application in the efficient utilization of solar energy for the treatment of Cr(VI)-containing wastewater.
机译：通过容易的水热法制料，制备新的纳米片组合的分层硫缺陷型β-IN2.77S4微球催化剂。通过温度和时间依赖性实验探索了纳米片组合的分层β-IN2.77S4微球的相位蒸变和可能的形成机制。结果表明，β - In2.77S4微球由许多薄纳米片组成，并且经历了锇成熟和自组装过程。这种独特的层级结构显示了光静电电子孔对的更快的电荷分离效率。发现在合适的水热条件下合成的产品显示出大的比表面积（157.86m（2）g（-1））和在Cr（VI）的还原中的高可见光光催化活性。获得最高活性的β-In2.77S4（140℃，24小时），在50分钟后，超过99％的Cr（VI）降低。结果表明，纳米片组合的分层β-In2.77S4微球具有潜在的应用，以有效利用太阳能来治疗Cr（VI）废水。

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  • 来源
    《RSC Advances》 |2016年第22期|共8页
  • 作者

    Shao Leqiang; Li Jie; Liang Ximeng; Xie Tian; Meng Suci; Jiang Deli; Chen Min;

  • 作者单位

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

    Jiangsu Univ Sch Chem &

    Chem Engn Zhenjiang 212013 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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