Compared with UV light photocatalyst materials, visible light photocatalyst materials have the advantages of low energy costs, ease of use, and high application flexibility, but the photocatalytic activity of visible light is relatively low, and industrial production of visible light photocatalyst materials is challenging.

Visible light photocatalyst materials refer to those that can be excited by visible light (without the need for UV light). Photocatalyst refers to semiconductor materials with photocatalytic function, including nano-titanium dioxide, nano-zinc oxide, nano-silica, etc., among which nano-titanium dioxide is the representative photocatalyst material.

The excitation range of visible light photocatalyst materials spans the visible light spectrum from blue to red light, with light sources including the sun, incandescent lamps, light-emitting diodes (LEDs), etc. Compared with UV light photocatalyst materials, visible light photocatalyst materials have the advantages of low energy costs, ease of use, and high application flexibility, but the photocatalytic activity of visible light is relatively low, and industrial production of visible light photocatalyst materials is challenging.

Through continuous research and development, China has now achieved industrial production and commercial application of visible light photocatalyst materials. Relevant research and development units and enterprises include University of Science and Technology Beijing, Beijing Weikang Environmental Protection Technology, TiTang Technology, Qingdao Xusheng Dongyang New Materials, Nanjing Yuntai Environmental Protection Technology, etc. Among them, Qingdao Xusheng Dongyang New Materials specializes in the industrialization of new functional visible light photocatalyst materials, with its technology at the international leading level. It owns multiple brands such as Xusheng Dongyang and Haisikelin.

Early photocatalysts were only effective under UV light, limiting their application scenarios. Visible light photocatalyst materials do not require UV light excitation, have broader working conditions, and broader application scenarios. According to the "In-depth Market Research and Investment Prospects Forecast Analysis Report for the Visible Light Photocatalyst Material Industry from 2024 to 2029" released by the Newest Industry Research Institute, visible light photocatalyst materials have removal effects on bacteria, viruses, formaldehyde, odors, etc., and can be used in various industrial coatings, textile and apparel fabrics, household appliances, wallpaper, automotive interiors, packaging materials, etc.

In terms of commercial applications, commercial products made from visible light photocatalyst materials include visible light photocatalyst slurry, visible light photocatalyst air disinfectors, visible light photocatalyst paints, and visible light photocatalyst packaging materials. Visible light photocatalyst air disinfectors are mainly used for indoor air disinfection. Suzhou Baishilang Intelligent Technology Co., Ltd. is the only domestic company that uses visible light-excited photocatalyst materials as the sole disinfection factor in its disinfectors, which enable 24-hour human-machine coexistence.

Industry analysts from Newest Industry Research Institute stated that visible light photocatalyst materials have the advantages of low energy costs, environmental protection and safety, broad-spectrum sterilization, and long-term efficiency. They can replace traditional sterilizing products with short durations and irritation, such as 84 disinfectant, alcohol, and ozone, and have broad application prospects. In recent years, driven by the pandemic, residents' awareness of antibacterial measures has continued to increase, and there is growing recognition for sterilizing products with self-sterilization capabilities and environmental friendliness. The market demand for visible light photocatalyst materials is vast.