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Article | REF: N4813 V1

Titanium Dioxide. Properties and Applications

Author: Philippe BLANCHART

Publication date: June 10, 2019, Review date: August 26, 2021

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5. Using titanium dioxide

5.1 Photocatalysis

TiO 2 is commonly used in photocatalysis processes, in industrial reactors, but also for electricity generation from solar energy. These applications are linked to the semiconducting nature of TiO 2 , whose band gap is at least equivalent to the energy of photons in the ultraviolet band (gap of 3.0 eV for rutile and 3.2 eV for anatase). Figure 5 illustrates the photocatalysis process initiated by the interaction of a photon of incident light in the energy band of the semiconductor, between the valence band and the conduction...

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