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. 2015 Oct 15;5:15228. doi: 10.1038/srep15228

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(a) A representative TEM image of the mesoporous TiO₂ hollow fibers. (b) The corresponding SAED pattern. (c) A representative HRTEM image of the mesoporous hollow fibers recorded from the marked area in (a). (d,e) Fast fourier transformation (FFT) images of the marked areas of A and B in (c). The insets are the partial geometry models of anatase and rutile TiO₂, respectively. (f,g) The corresponding inverse fast fourier transformation (IFFT) images of (d,e), respectively. (h,i) The element mappings of Ti and O within a single nanofiber.