TiO2 NPs are also prepared in 15 ± 2 nm average size with Quasi-Spherical like shape and Anatase crystal structure as shown in Fig. 2l, the top-down approach is used to get target size, then they are checked by a transmission electron microscope (TEM) which is performed on (JEOL JEM-2100) high-resolution TEM at an accelerating voltage of 200 kV as shown in Fig. 2m.
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