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Research > Research Projects
Dr. HO Wing Kei - Lanthanide-doped Upconverting Particles/Graphitic Carbon Nitride Composite as a Novel Solar (Near-infrared-visible-light) Driven Photocatalyst for Air Purification
Dr. HO Wing Kei
(Funding Support to GRF/ECS proposal rated 3.5, HK$100,000, 2015-2016) In this project, we propose a 12-month preliminary study to develop a new class of highly efficient photocatalysts that can be activated from the visible light to near-infrared (NIR) region. Lanthanide-doped upconverting will function as sensitizers to absorb the NIR light, upconvert low-energy photons into high-energy photons and then transfer energy to visible-light-active components for g-C3N4 photocatalysis. As the amount of integrated solar photon flux from 700 to 1500 nm is approximately 47.4%, the efficiency of photocatalysts will be significantly improved if they are made sensitive to both NIR and visible light, resulting in a much more efficient utilization of solar energy compared with only UV-, visible- or UV-visible-light responsive photocatalytic systems. The degradation of air pollutants on the broad-spectrum photocatalysts will be investigated.