Abstract The nanosheet-assembled Bi2WO6 microspheres could be successfully synthesized in large quantities by a facile hydrothermal strategy in the presence of surfactant hexadecyl trimethyl ammonium bromide (CTAB) and polyvinylpyrrolidone (PVP) under mild conditions. The morphology and size of as-prepared Bi2WO6 could be readily controlled by adjusting the synthetic parameters such as hydrothermal time. The probable formation mechanism of nanosheet-assembled Bi2WO6 microspheres was discussed in detail. The hierarchical nanosheet-assembled microspheres could be constructed by orderly arranged nanosheets. The photocatalytic activity of the nanosheet-assembled Bi2WO6 microspheres was evaluated by degrading rhodamine B (RhB) under irradiation of visible light. The brilliant photodegradation efficiency is about 98% under visible light irradiation for 50 min. The results suggest that the as-prepared Bi2WO6 microspheres have good prospects as the photocatalyst for the removal of organic pollutants.

中文翻译：

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纳米片组装的 Bi2WO6 微球具有高效的可见光驱动光催化活性

摘要 在表面活性剂十六烷基三甲基溴化铵 (CTAB) 和聚乙烯吡咯烷酮 (PVP) 存在下，在温和条件下，通过简便的水热策略可以成功地大量合成纳米片组装的 Bi2WO6 微球。通过调整水热时间等合成参数，可以很容易地控制所制备的 Bi2WO6 的形态和尺寸。详细讨论了纳米片组装 Bi2WO6 微球的可能形成机制。分级纳米片组装的微球可以由有序排列的纳米片构成。通过在可见光照射下降解罗丹明 B (RhB) 来评估纳米片组装的 Bi2WO6 微球的光催化活性。在可见光照射 50 min 下，光降解效率约为 98%。结果表明，所制备的 Bi2WO6 微球作为光催化剂去除有机污染物具有良好的前景。