The volatile organic compounds (VOCs) are one kind of ubiquitous pollutants in the indoor air, with great potential hazards on human health. The photocatalysis, which is green and highly efficient, is an important technology for the removal of VOCs. However, the conventional TiO₂ has some shortcomings, such as the narrow light response range and the low quantum efficiency. So, the modification of TiO₂ nanomaterials has been a wide concern. The modification methods for TiO₂ nanomaterials include the ion doping, the noble metal deposition, and the semiconductor coupling. This paper reviews the modification methods for TiO₂ nanomaterials, and analyzes the mechanism and the influencing factors for improving photocatalytic efficiency. The research progress for VOCs removal in indoor air with modified TiO₂ nanomaterials is summarized. As a new application for photocatalytic materials, the photocatalytic degradation of VOCs in indoor air with modified TiO₂ nanomaterials needs to be further studied.

photocatalysis  /  volatile organic compounds  /  titanium dioxide  /  modification