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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis, characterization and photocatalytic activity of NaNbO_3/ZnO heterojunction photocatalysts
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Synthesis, characterization and photocatalytic activity of NaNbO_3/ZnO heterojunction photocatalysts

机译：NaNbO_3 / ZnO异质结光催化剂的合成，表征及光催化活性

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摘要

A series of NaNbO_3/ZnO heteronanostructures were synthesized with the hydrothermal method. Various characterization methods such as X-ray powder diffraction (XRD), scanning electronic microscope (SEM) and energy dispersive X-ray spectrometer (EDS), transmission electron microscope (TEM), X-ray photo-electron spectra (XPS) and diffuse reflectance spectra (DRS) were employed to investigate the structure, morphology and photocatalytic properties. The photocatalytic activity of the catalysts was evaluated by the degradation of methylene blue dye and the highest photocatalytic efficiency was observed when the content of NaNbO_3 was 10wt.%. The photocatalytic mechanism of the heterojunction was also discussed. The effective transformation of the photoexcited electron and holes restricted the recombination of charges, which was regarded as the main reason of the high photocatalytic activity.
机译：采用水热法合成了一系列NaNbO_3 / ZnO异质结构。各种表征方法，例如X射线粉末衍射（XRD），扫描电子显微镜（SEM）和能量色散X射线光谱仪（EDS），透射电子显微镜（TEM），X射线光电子能谱（XPS）和扩散反射光谱（DRS）用于研究结构，形态和光催化性能。通过亚甲基蓝染料的降解来评估催化剂的光催化活性，并且当NaNbO 3的含量为10wt。％时观察到最高的光催化效率。还讨论了异质结的光催化机理。光激发电子和空穴的有效转变限制了电荷的复合，这被认为是高光催化活性的主要原因。

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