Hydrothermal synthesis and photoluminescence behavior of CeO2 nanowires with the aid of surfactant PVP |
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| Authors: | Ming-zai Wu Yan-mei Liu Peng Dai Zhao-qi Sun Xian-song Liu |
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| Affiliation: | Ming-zai Wu~(1,2)),Yan-mei Liu~(1)),Peng Dai~(1)),Zhao-qi Sun~(1)),and Xian-song Liu~(1,2)) 1) Key Laboratory of Opto-electronic Information Acquisition and Manipulation,Anhui University,Hefei 230039,China 2) Engineering Technology Research Center of Magnetic Materials,China |
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| Abstract: | Well-crystalline CeO2 nanowires were prepared via a surfactant-assisted hydrothermal process.Reaction temperature and reaction time were changed for the determination of optimal synthesis parameters.The as-obtained products were characterized by X-ray diffraction(XRD),high-resolution transmission electron microscopy(HRTEM),and field emission scanning electron microscopy(FESEM).The results show that single crystal CeO2 nanowires with high yield and good uniformity can be obtained hydrothermally at 180℃ for 12 h with the aid of 2.0 g surfactant(polyvinyl pyrrolidone,PVP).The role of PVP was then discussed and a possible growth mechanism was proposed.Moreover,room temperature photoluminescence(PL)spectra were obtained for these CeO2 nanowires,which are believed to be related to the abundant defects in these nanostructures. |
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| Keywords: | cerium oxide polyvinyl pyrrolidone hydrothermal photoluminescence |
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