Nanostructured titanates with different morphologies such as nanoflakes, nanotubes, and nanofibers have been selectively synthesized by a simple solvothermal treatment of commercial anatase TiO 2 using the mixed water-ethanol cosolvent at low alkaline concentration. The effects of solvothermal temperature, volume ratio of H 2O to C 2H 5OH, amount of NaOH and solvents on the formation of titanate nanostructures have been systematically studied through X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). At low concentration of NaOH solution (the actual concentration of OH - in the solution is only 0.58 M), different titanate nanostructures are achieved by simply changing the volume ratio of H 2O to C 2H 5OH at 180 °C and titanate nanotubes can be synthesized between 100 and 180 °C. A probable formation mechanism is proposed based on XRD, SEM and TEM analysis. The influence of cosolvent on the transformation from anatase TiO 2 to titanate is also investigated. © 2012 Springer Science+Business Media, LLC.
CITATION STYLE
Shen, X., Zhang, J., & Tian, B. (2012). Facile tailoring of titanate nanostructures at low alkaline concentration by a solvothermal route. Journal of Materials Science, 47(8), 3855–3866. https://doi.org/10.1007/s10853-011-6241-x
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