Figure 2.

Morphologies of TiO2 nano-branched arrays. FESEM images of TiO2 nano-branched arrays synthesized via immersing TiO2 nanorod arrays into an aqueous TiCl4 solution for (a) 6, (b) 12, (c) 18, and (d) 24 h.

Liu et al. Nanoscale Research Letters 2014 9:107   doi:10.1186/1556-276X-9-107
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