Figure 5.

TEM images of (a) TNA-TiCl4 and (b) TNA-TnB. TEM, transmission electron microscope; TNA, TiO2 nano-tube array; TNA-TnB, TiO2 nano-tubes after titanium (IV) n-butoxide treatment; TNA-TiCl4, TiO2 nano-tubes after titanium tetrachloride treatment.

Ho et al. Nanoscale Research Letters 2012 7:147   doi:10.1186/1556-276X-7-147
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