Synthesis, characterization and optical activity of La-doped ZnWO₄ nanorods by hydrothermal method

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• 作者：Jirapong Arin ; Phattranit Dumrongrojthanath ; Oranuch Yayapao ; Anukorn Phuruangrat ; Somchai Thongtem ; Titipun Thongtem
• 关键词：La doped ZnWO4 ; Hydrothermal ; Nanorods
• 刊名：Superlattices and Microstructures
• 出版年：March, 2014
• 年：2014
• 卷：67
• 期：Complete
• 页码：197-206
• 全文大小：3090 K

文摘

One-dimensional La doped ZnWO₄ nanostructures have been synthesized by hydrothermal method. The effect of various La contents doped ZnWO₄ samples on phase, morphologies and optical properties was investigated and characterized by X-ray diffraction (XRD), field scanning electron microscopy (FESEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), Raman and UV-visible spectroscopy, respectively. The results of XRD, SEM and SAED revealed that all products were one-dimensional monoclinic ZnWO₄ nanorods while doped La³⁺ constants into ZnWO₄ lattice. The observation of TEM and HRTEM showed that the obtained La³⁺ doped ZnWO₄ with different La constants were homogenous nanorods shapes with grow along [0 2 1] direction. The optical property result showed that La³⁺ doped ZnWO₄ is a red shifted absorption when comparing to pure ZnWO₄.