Abstract—

Sn doped ZnO (SZO) nanorods with oxygen-vacancy have been synthesized by one-step hydrothermal method. Detailed analysis based on X-ray photoelectron spectroscopy (XPS), transmission electron microscope (HRTEM), and electron paramagnetic resonance (EPR) has revealed that Sn doped ZnO nanorods are rich in oxygen-vacancies. Oxygen-vacancies lead to the band-gap narrowing of Sn doped ZnO nanorods due to broadening the valence band and an increase the visible-light response which results in high photocurrent responses and photocatalytic performance of Rhodamine B under visible-light illumination. Sn doped ZnO sample exhibits little decrease in activity even after 4 cycles, indicating that Sn doped ZnO is stable and not photocorroded easily.

中文翻译：

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氧缺陷锡掺杂ZnO纳米棒在可见光照射下增强光催化活性

摘要-

通过一步水热法合成了具有氧空位的Sn掺杂ZnO（SZO）纳米棒。基于X射线光电子能谱（XPS），透射电子显微镜（HRTEM）和电子顺磁共振（EPR）的详细分析显示，掺Sn的ZnO纳米棒富含氧空位。由于价带变宽和可见光响应增加，氧空位导致Sn掺杂的ZnO纳米棒的能隙变窄，从而导致若丹明B在可见光照射下具有较高的光电流响应和光催化性能。Sn掺杂的ZnO样品即使经过4个循环也几乎没有活性降低，表明Sn掺杂的ZnO稳定且不易被光腐蚀。