Figure 2.
(a) SEM image of PS microspheres template, (b) prepared IO-TiO2, and (c) IO-TiO2 in micron scale. (d) XPS spectra of the IO-TiO2 and (e) Ti2p for IO-TiO2. (f) X-ray diffraction (XRD) pattern of IO-TiO2.
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