A scientific perspective on light negative oxygen ions and photocatalyst technology

11 Feb.,2025

In the process of promoting the application of light negative oxygen ions (LNOI) technology, we found that many people easily confuse light negative oxygen ions (LNOI) technology and photocatalyst technology.

 

In the process of promoting the application of light negative oxygen ions (LNOI) technology, we found that many people easily confuse light negative oxygen ions (LNOI) technology and photocatalyst technology. Especially after some domestic lighting brand companies launched photocatalyst lighting series products, many people compared this product with our light negative oxygen ions (LNOI) series products. In fact, the two products have something in common, such as the functions of healthy lighting, air purification, and sterilization. However, there are also many differences between the two. Let’s analyze them together.

 

Photocatalyst technology, also called photocatalytic technology, was discovered in 1967 by Professor Kenichi Honda, a professor at the University of Tokyo, and Akira Fujishima, a graduate student at the time. They found that titanium dioxide electrodes can split water into hydrogen and oxygen under ultraviolet irradiation. They named this technology photocatalyst technology. Photocatalyst technology is a process in which certain materials convert light energy into chemical energy under the irradiation of light, promoting the synthesis of organic matter or degrading organic matter.

 

Light negative oxygen ions (LNOI) technology was invented by Wu Yulin's team of Guangdong Cosio Lighting Co., Ltd. in 2020. It is an innovative combination of light elements and negative ion elements to fully and effectively exert the characteristics of the two to achieve healthy light, air purification, sterilization and disinfection functions. Light negative oxygen ions (LNOI) technology can not only sterilize and disinfect through direct ultraviolet irradiation, but also achieve the purpose of sterilization and disinfection by changing the bacterial environment after negative ions reach a certain concentration.

 

Therefore, although Light negative oxygen ions (LNOI) technology and photocatalyst technology have some similarities, they also have many differences. The occurrence mechanism of the two is not the same, the sterilization and disinfection mechanisms of the two are not the same, and the functional parts of the two are also different. Compared with photocatalyst technology, light negative oxygen ions (LNOI) technology is natural, healthy and intelligent.

 

First of all,light negative oxygen ions (LNOI) technology is natural. Light negative oxygen ions (LNOI) technology not only applies the effective function of ultraviolet rays, but also gives full play to the functions of red light and infrared spectrum. It fully adopts the concept of simulating sunlight to stably output healthy light. At the same time, the starting point of light negative oxygen ions (LNOI) technology is to simulate nature's sunlight and forest oxygen bar, and to create a natural ecological environment. Photocatalyst technology generally uses ultraviolet irradiation to excite and decompose materials, and does not fully consider the application of light in the field of lighting. It was only when lighting companies applied photocatalyst technology to lighting fixtures that photocatalyst lighting emerged. Photocatalyst technology is actually still an application of materials and a type of industrial technology.

 

Secondly, light negative oxygen ions (LNOI) technology is healthy. Light negative oxygen ions (LNOI) technology uses negative ions to purify the air. The negative ion generator does not produce any odorous ozone components. Photocatalyst technology uses light to excite materials. Among the chemical components produced, a large part of ozone is contained, resulting in a certain odor. At the same time, light negative oxygen ions (LNOI)technology adopts a dual sterilization and disinfection method. It not only uses the characteristics of light to sterilize and disinfect, but also uses the characteristics of negative ions to perform sterilization and disinfection, so that sterilization and disinfection are more thorough and perfect. light negative oxygen ions (LNOI) have sterilization and disinfection functions, which can realize human and machine coexistence and provide 24-hour uninterrupted sterilization and disinfection. According to the Guangdong Provincial Microbial Analysis and Testing Center, the virus killing rate of light negative oxygen ions (LNOI) technology in a 30m³ space is enough to reach 99.99% in 1 hour, and the virus inactivation rate on the surface can reach 99.14% in 2 hours. The method of sterilization and disinfection of photocatalyst technology is relatively simple, mainly through the gas decomposed by materials for sterilization and disinfection.

 

Finally, Light negative oxygen ions (LNOI) technology is smart. Using Light negative oxygen ions (LNOI) technology, both lights and negative ions can be freely controlled and adjusted through smart chips. Different system solutions can be used in different spaces, and different system solutions can be customized for different harmful gases. However, photocatalyst technology is difficult to control intelligently in terms of material decomposition, making it difficult to achieve intelligence.

 

Of course, both light negative oxygen ions (LNOI) technology and photocatalyst technology are scientific results obtained by scientists after long-term research. They all have unique functions and advantages. There is no distinction between which one is better, which is just different applications. We believe that driven by scientific research, more fruitful results will emerge in the development and application of light, thus benefiting the healthy development of human society.