Bi2O3-Bi2WO6 Composite Microspheres: Hydrothermal Synthesis and Photocatalytic Performances
Bi2O3-Bi2WO6 Composite Microspheres: Hydrothermal Synthesis and Photocatalytic Performances
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DOI：
10.1021/jp108414e
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发表时间：
2011-04-07
影响因子：
3.7
通讯作者：
Chen, Wei
中科院分区：
文献类型：
--
作者：
Ge, Ming;Li, Yafei;Chen, Wei
以表面活性剂为模板剂，采用一步水热法合成了由纳米片组装而成的类铋铋氧化物-铋钨氧化物复合微球。采用X射线衍射（XRD）、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）等手段对Bi 2 O3-Bi 2 WO 6微球的结构和形貌进行了表征。氮气吸附和脱附等温线进行检查的比表面积和孔性质的制备的微球。以罗丹明B为模型污染物，研究了Bi 2 O3-Bi 2 WO 6复合微球的光催化活性，在太阳光照射下，10 min内罗丹明B的降解率超过99%.与单独的Bi 2 O3、Bi 2 WO 6和传统的P25相比，Bi 2 O3-Bi 2 WO 6复合微球具有更好的光催化性能。
Chrysanthemum-analogous Bi2O3-Bi2WO6 composite microspheres, assembled by nanosheets, were synthesized through a one-step hydrothermal route with the aid of surfactant templates. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were employed to clarify the structure and morphology of the Bi2O3-Bi2WO6 rnicrospheres. Nitrogen adsorption and desorption isotherms were conducted to examine the specific surface area and the pore nature of the as-prepared microspheres. The photocatalytic activity of the Bi2O3-Bi2WO6 composite microspheres was evaluated by using rhodamine B as a model contaminant, and over 99% of rhodamine B was degraded within 10 min under the exposure of sunlight. The Bi2O3-Bi2WO6 composite microspheres presented enhanced photocatalytic performances compared with separate Bi2O3, Bi2WO6, and conventional P25.