کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1331959 | 979025 | 2006 | 6 صفحه PDF | دانلود رایگان |
We have successfully synthesized single-crystal ZnO nanotubes and tubular whiskers by employing Zn(NO3)2·6H2O, NH3·H2O as the starting materials in the presence of polyethylene glycol (PEG, Mw=2000) at ambient pressure and low temperature (70 °C). Characterizations are carried out by X-ray powder diffraction (XRD), X-ray energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), transmission electron microscopy (TEM, HRTEM) and photoluminescence (PL) measurement. The results show that the as-prepared ZnO are tubular textures, which have average cross-sectional dimensions of 200–300 nm, lengths of 2–3.5 μm, and wall thickness of 80 nm. These tubular products demonstrate a sharp ultraviolet excitonic emission peak centered at 385 nm at room temperature. A possible growth mechanism and the influence of the reaction temperature on the formation of crystalline ZnO are presented.
We have successfully synthesized single-crystal ZnO nanotubes and tubular whiskers by employing Zn(NO3)2·6H2O, NH3·H2O as the starting materials in the presence of polyethylene glycol (PEG, Mw=2000) at ambient pressure and low temperature (70 °C). These tubular products demonstrate a sharp ultraviolet excitonic emission peak centered at 385 nm at room temperature.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 179, Issue 3, March 2006, Pages 843–848