TiO2 photocatalysis, as an energy-saving, high-efficiency and green technology, has a wide range of applications in sewage treatment, cancer treatment, hydrogen production, photocatalytic CO2 reduction and photocatalytic sensors. However, the large band width (Eg =3.2 eV) of TiO2 material hinders its practical application, which in turn leads to low visible-light utilization and low quantum yield. Therefore, the preparation of TiO2 with high quantum yield and fast response to visible light has become a key topic in current photocatalyst research. This review discusses different photocatalytic applications, current synthetic techniques for the elaboration of nanostructures of several TiO2 -based materials and recent advances in enhancing visible photocatalytic activity.
Keywords: Application; Modification; Nano-TiO2; Nanocomposites; Photocatalysis.
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