Air/Water Purification and Disinfection using Whitewash Photocatalyst
This intervention is to developed a powerful photocatalyst, namely Whitewash, which can break down harmful indoor volatile organic compounds to harmless substances.
Whitewash is a photocatalyst made of Titania composite that absorbs visible light, even under diffuse light condition, and generates necessary radicals that oxidize harmful gas molecules, viruses and bacteria that adsorbed onto the photocatalyst surface. The photocatalyst are made into nanofibers with diameter less than 1/1000 times the diameter of human hair. When combined with oxygen and water vapor in air, special ions and radicals are produced to oxidize the undesired gases adsorbed on the photocatalyst.
Whitewash can be used as coating on walls with adequate air circulation and lighting in elevators, vehicle cabins, hospital wards, commercial kitchens to breakdown harmful gases, and kill viruses and bacteria with high level of formaldehyde to acceptable.