光催化
降级(电信)
材料科学
热液循环
分子
化学工程
可见光谱
形态学(生物学)
催化作用
纳米技术
化学
光电子学
计算机科学
有机化学
电信
工程类
生物
遗传学
作者
Yanyan Zhao,Yongbo Wang,Enzhou Liu,Jun Fan,Xiao Hu
标识
DOI:10.1016/j.apsusc.2017.12.064
摘要
Abstract The morphology-controlled synthesis of nano-structure photocatalyst have leaded a new possibility to improve their physical and chemical properties. Herein, Bi2WO6 nanocrystals (BWO) with nano-flower, nano plates, knot shape, rod like and irregular morphologies have been successfully synthesized through a highly facile hydrothermal process by simply adjusting pH values, reactive solvents and temperature. Photocatalytic activity of the as-prepared samples were evaluated by degradation of Ceftriaxone sodium under visible light irradiation (λ > 420 nm), the results indicated that all the BWO samples exhibit morphology-associated photocatalytic activity, and the 3D flowerlike-structure of BWO composed of well-ordered nano plates (BWO-D-5) displayed the outstanding photocatalytic activity. Through getting insight into the mechanism, h+ and O2− play major roles compared with OH in photocatalytic degradation process. The possible pathway of Ceftriaxone sodium and the intermediates were proposed to better understand the reaction process. Moreover, this work not only provides an example of morphology-dependent photocatalytic activity of BWO but also provides an illustrative example for removing organic pollutant molecules according to practical requirements.
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