Black Titanium Dioxide Nanomaterials in Photocatalysis

Figure 10

(a) UV-vis diffuse reflectance spectra and (b) CO₂ reduction rate of the TiO_2−x, T300, T500, and T700. TiO_2−x is the as-prepared TiO₂ by hydrothermal reaction. T300, T500, and T700 are the products after postannealing treatment at 300, 500, and 700°C, respectively. Reprinted with permission from [89]. Copyright (2016) Nature Publishing Group.

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