China Nonferrous Metallurgy

As a cutting-edge material for photocatalysis, TiO₂ has received extensive attention. The performance of TiO₂ as a photocatalyst depends on various parameters, including morphology, surface area, and crystallinity. Although TiO₂ exhibits good catalytic activity in various catalytic systems, its performance as a photocatalyst is generally limited due to its low electrical conductivity and wide band gap. Many different studies have been devoted to overcoming these problems, resulting in significant improvements in photocatalytic performance. In this paper, the research progress of TiO₂ photocatalytic hydrogen evolution reaction in recent years is reviewed, and the adjustment and improvement of the photocatalytic activity of TiO₂ by the change of catalyst components, doping and photosensitization are discussed. The advantages and limitations of each modification method are reviewed. Finally, the main obstacles and development prospects of TiO₂ as a photocatalyst in the future development are pointed out.