Figure 6.

XRD patterns of (a) as-prepared TNA, (b) annealed-TNA, (c) TiCl4-treated TNA, and (d) TnB-treated TNA. XRD, X-ray diffraction; 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; A, anatase diffraction peak.

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