Chief Investigator:

Dr. HO Wing Kei

Project Year:

2019-2020

Description:

Through the support from the government funding and research collaboration with industrial partners, different strategies were used to overcome the weaknesses of “conventional” photocatalytic technology. The novel LED activated photocatalyst graphitic carbon nitride (g-C3N4) was developed which provides an innovative solution for long-term air purification and disinfection functions in the indoor environment without consuming any energy. Compared to traditional TiO2 photocatayst, which requires UV light activation, solely visible light or indoor lighting (i.e. visible light) condition can activate the new carbon nitride material to degrade air pollutants and bacteria. This energy-saving and environmentally friendly technology is a breakthrough that opens up a new possibility of applying visible light (e.g. LED lighting) in photocatalysis. It also has a wide range of potential applications in air purification and disinfection contexts in daily life.