TiO 2 nanowires were synthesized successfully in a large quantity by thermal evaporation using titanium monoxide powder as precursor. X-ray diffraction results showed that all the products were pure rutile phase of TiO 2 . According to microstructural observations, the nanowires have two typical morphologies, a long straight type and a short tortuous type. The straight nanowires were obtained at a wide temperature range of 900–1050 ℃, while the tortuous ones were formed below 900 ℃. Transmission electron microscopy characterization revealed that both the straight and the tortuous nanowires are single-crystal rutile TiO 2 . The preferential growth direction of the nanowires was determined as [110] orientation according to electron diffraction and high-resolution image analyses. The morphological change of TiO 2 nanowires was discussed by considering the different atomic diffusion rates of Ti atoms caused by the phase transformation in Ti substrate at around 900 ℃.
参考文献
| [1] | Z.G. Shang;Z.Q. Liu;Q. Li;Z.J. Wang;J.K. Shang .Characterization and visible light germicidal efficacy of nitrogen doped TiO_2 film crystallized by microwave irradiations[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2012(7):2429-2433. |
| [2] | Y. Lei;L. D. Zhang;G. W. Meng;G. H. Li;X. Y. Zhang;C. H. Liang;W. Chen;S. X. Wang .Preparation and photoluminescence of highly ordered TiO_(2) nanowire arrays[J].Applied physics letters,2001(8):1125-1127. |
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