Surfactant-free synthesis of Bi2WO6 multilayered disks with visible-light-induced photocatalytic activity
Surfactant-free synthesis of Bi2WO6 multilayered disks with visible-light-induced photocatalytic activity
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DOI：
10.1016/j.materresbull.2009.04.012
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发表时间：
2009-08
影响因子：
5.4
通讯作者：
Chunxiao Xu;Xiao Wei;Yanmin Guo;Hanqi Wu;Z. Ren;Gang Xu;G. Shen;G. Han
中科院分区：
文献类型：
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作者：
Chunxiao Xu;Xiao Wei;Yanmin Guo;Hanqi Wu;Z. Ren;Gang Xu;G. Shen;G. Han
采用无表面活性剂的水热法制备了钨酸铋（Bi2WO6）多层盘片。采用x射线衍射（XRD）、扫描电镜（SEM）、透射电镜（TEM）和高分辨率透射电镜（HRTEM）对所得产物进行了表征。结果表明，通过方形纳米片的自组装，以完美的定向方式构建了三维（3D） bi2wo6多层磁盘。在时间相关实验结果的基础上，对产物的形成机理进行了细致的研究。此外，光催化性能的研究表明，所得bi2wo6对罗丹明B （Rhodamine B, RhB）的降解具有良好的可见光驱动光催化活性。
The synthesis of bismuth tungstate (Bi2WO6) multilayered disk which was constructed by oriented square nanoplates was easily realized via a simple surfactant-free hydrothermal method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM) were used to investigate the as-obtained product. The results indicated that the three-dimensional (3D) Bi2WO6multilayered disk was constructed by self-assembly of square nanoplates via a perfect oriented manner. The formation mechanism of the product was carefully investigated on the basis of the results of time-dependent experiments. In addition, studies of the photocatalytic property demonstrated that the as-obtained Bi2WO6could exhibit excellent visible-light-driven photocatalytic activity for the degradation of Rhodamine B (RhB).