Abstract
In this paper, we prepared TiO2 nanostructures by a hydrothermal method and investigated the influence of the \(\mathrm{SO}_{4}^{2-}\) ion and the effect of long alkyl chains of sodium dodecyl sulfate on the crystal phases of TiO2 by experiments and theoretical calculations. The results indicate that the absorption of the H+HSO4 fragment on rutile (110) is more stable than that of the 2H+SO4 fragment and more favorable to the formation of anatase. The absorption and steric effects of sodium dodecyl sulfate on the surfaces of TiO2 grains also have an important influence on the formation of mixed crystals by changing the speed and the way of octahedral TiO6 units combining. Based on the above facts, we revised the original reaction scheme for crystalline titania formation by previous authors.
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Acknowledgements
The work was supported by the National Natural Science Foundation of China (No. 51172217), the Natural Science Foundation of Shandong Province (ZR2009FZ003) and the Key Foundation of Qingdao (10-3-4-1-10-jch).
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Liu, C., Wang, X. The influence of sodium lauryl sulfate on the crystal phases of titania by hydrothermal method. Appl. Phys. A 109, 279–284 (2012). https://doi.org/10.1007/s00339-012-7265-z
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DOI: https://doi.org/10.1007/s00339-012-7265-z