Scientific Development Research

Titanium dioxide (TiO2) semiconductor is widely used in the fields of photocatalytic materials, photovoltaic materials, lithium ion battery materials, and gas sensitive materials due to its characteristics of non-toxicity, good chemical stability, high photocatalytic activity, no secondary pollution, cheap and easy to obtain, and has a good application prospect. As a research hotspot in the field of photocatalysis, the common difficulty of photogenerated electrons and holes easily recombination in photocatalyst also directly affects its photocatalytic efficiency and limits the application of TiO2. This paper introduces the modification strategies to improve the photocatalytic performance of TiO2 semiconductor photocatalytic materials by reducing the width of the band gap, increasing the contact area of the catalyst and the pollutant, and inhibiting the photogenerated electron-hole composite, and proposes more excellent modification strategies.

Photocatalysis; TiO2; Modification