This technology presents the development of a commercial scale process of titania photocatalyst sol. Besides the production process, the coating process has also been established with the development of automatic spray and dip coating systems. Substrates that has been coated on are glass, paper, metal and ceramic filters. With the rising awareness and concerns of health, the improvement of indoor living conditions, such as air quality, is becoming an important issue for many countries. Common atmospheric pollutants such as oxides of nitrogen, and harmful bacteria or fungi that are airborne or thrive in high moisture environments are known to be detrimental to health. This creates a need for products that are able to actively remove the harmful substances. This technology enables many functional products, such as air purifiers and functional paints, to be designed and manufactured with the antibacterial and de-pollution capabilities.
This photocatalyst sol is synthesized from titanium tetrachloride through neutralization, precipitation, peptisation, and reflux procedures. The properties of TiO2 in the as-synthesized sol are: Solid content – approximately 1 wt% pH – around 7.5 The nano-sized and rod shaped anatase TiO2 particle obtained has the following dimensions: Long axis <20 nm Short axis <10 nm Laboratory tests has proven the effectiveness of a coated substrate antibacterial, air purification, and self-cleaning functions.
This technology is highly versatile and can be applied across many applications including (but not limited to): Antibacterial Air purification Self-cleaning function Water treatment
Compared to other techniques, this technology provides the following benefits: Low-cost Can be coated onto different substrates Various methods of application