Recent Developments of TiO2-Based Photocatalysis in the Hydrogen Evolution and Photodegradation: A Review

This review summarizes recent advances of doped TiO2-based photocatalysts used in hydrogen production and the degradation of organic pollutants in water

Baglan Bakbolat; Chingis Daulbayev; Fail Sultanov; Renat Beissenov; Arman Umirzakov; Almaz Mereke; Askhat Bekbaev; Igor Chuprakov


Scholarcy highlights

  • At present, hydrogen is regarded as the fuel of the future
  • As a result of doping with cations, a certain number of defects appear in the TiO2 structure, which can act as charge recombination centers, this leading to a decrease in photocatalytic activity even under the influence of UV light
  • If saturation is not performed at dark conditions, a decrease in the concentration of the target pollutant or the color intensity change of the used in experiment dye will be associated with photocatalysis, and with adsorption and photocatalytic degradation, so the effectiveness of the photocatalyst will be incorrect
  • The results showed that it took 2 min for TiO2-reduced graphene oxide based aerogel to achieve adsorption saturation, while for TiO2-rGO powder, it took more than 10 min
  • The results showed that the aqueous solution containing rhodamine B was purified to 97.7%
  • The efficiency of TiO2 doping by various components, which significantly increases the photocatalytic activity, is shown
  • Due to the growth of environmental problems and the limited availability of hydrocarbon fuels, investigations in the field of hydrogen production by “artificial photosynthesis” will undoubtedly increase

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